49 U.S.C. Sep 28, 2016. 106(g), 40113, 44701. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. TCM-powered aircraft operating under Part 135 of the FARs that have to comply with all manufacturers service bulletins would have to comply with Service Bulletin 96-11B, dealing with prop strikes, dated July 2008, requiring total disassembly and inspection after any incident that requires removal of the propeller for repairs or if the engine physically lost any rpms during the incident. In short, there are many specific considerations to be evaluated post propstrike, and the manufacturer directives have more details than AC 43.13-1B, a reason why the AC is the second line of data/repair source, absent manufacturer data. The thought of the damage and cost involved makes all of us shudder. (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Atlanta Aircraft Certification Office (ACO). (j) The preceding definitions include situations where an aircraft is stationary and the landing gear collapses causing one or more blades to be substantially bent, or where a hangar door (or other object) strikes the propeller blade. Conditions which surround accidents are many and varied; therefore the circumstances of the accident can not, in our opinion, be used to predict the extent of the damage to the engine or assure its future reliability. It still could end up at a prop repair station if inspection deems it a prop major repair requirement depending on manufacturer inspection criteria of the prop. rendition of the daily Federal Register on FederalRegister.gov does not Plus, unless you were watching the tach, how would you know? MSB 005C lists additional serial numbers (SN's) of affected engines and suspect crankshafts that were manufactured between April 1, 1998, and March 31, 2000, inclusive. All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. are not part of the published document itself. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. ", Case in point 2. Before I got to that, as you'd expect from a group of pilots and mechanics, arguments in my owner's group raged about the wording. provide legal notice to the public or judicial notice to the courts. He adds, "This limits their liability exposure. Be especially wary if this is some form of private cash sale that has to be done right away, unless you are planning to have it torn down and rebuilt by a shop with the right inspection equipment to inspect for crank and gear damage, and be prepared for costs potentially exceeding a factory reman engine i.e. Pre-Flight. After defining a prop strike, TCM's SB 96-11A states: "A. This condition, if not corrected, could result in crankshaft connecting rod journal fracture, which could result in total engine power loss, in-flight engine failure and possible forced landing. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. corresponding official PDF file on govinfo.gov. Some elbow room? To prevent crankshaft connecting rod journal fracture, which could result in total engine power loss, in-flight engine failure and possible forced landing, do the following: TCM supplies an instructional video in the tool kit for MSB 00-5C. Also, on prop strikes involving frontal impact, the crank can be pushed back into the engine, cracking the case at the slinger ring, and this may not be visible. So, in a roundabout way by the last paragraph, Lycoming is saying its the repair facilitys call unless your engine is one found in the later AD 2004-10-14, which applies to a lot of Lycoming engines. A special note to experimental aircraft builders or someone looking for an engine upgrade: Beware of that great deal on an engine with a less than stellar or unknown history. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. include documents scheduled for later issues, at the request The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. A. Issued in Burlington, Massachusetts, on November 13, 2000. Yet, the company recently published a new Service Bulletin, SB No. Dealing with them on this issue is fodder for another article, however. DeJoris, who deals with propeller strike issues quite frequently says, "We recently had a customer with a prop strike who struck a steel stake that cut 1/4-inch of the tip off one blade of a three bladed prop. by the Federal Energy Regulatory Commission Basically the fuel gauges in the center console are shorting out. Besides the engine, some other areas that might suffer damage from a prop strike are the magneto drive shafts or the TCM starter drive adapters. Prop strike on Continental. There's a tremendous amount of energy stored in the rotating flyweight, and when all of a sudden you stop the prop and engine, that energy has to be dissipated somewhere.". Other Lycoming literature mentions the importance to check the accessories as does TCM. Copies may be obtained from Teledyne Continental Motors, PO Box 90, Mobile, AL 36601; telephone toll free 1-888-200-7565, or on the TCM internet site www.tcmlink.com. Over the years, Continental has built a service offering for aircraft operators and owners These services include engine overhauls at the Continental factory service center for Continental, Titan, and LYCOMING engines, factory overhauls for Continental AvGas engines, sudden stoppage/propeller strikes, shock inspections, fleet overhaul programs, Jet-A burning engine Or it was known to have been used on a plane that crashed or was somehow damaged or is missing a complete set of engine logs or some parts. This may seem to contradict itself since sudden stoppage is mentioned earlier in the AD in the prop strike-definitions section, but thats the way it is written with an orientation to certain types of direct drive Lycoming engines, with only Lycoming O-145, O-320H, O-360E, LO-360E, LTO-360E,O-435, and TIO-541 series engines being exempt. Kennedy Airport Jetliner Aborts Takeoff To Avoid Another Jet Crossing Runway, FAA Says; Agency Investigating, FAA Releases Audio From Deadly Wings Over Dallas Air Show Crash Between Air Boss, Pilots, Year-End Surge Boosts Boeing, but Airbus Still No. Sure, some of these arguments are specious, but the point is, there's a lot of gray area, and this can cause many incidents to be ignored. These are the requirements as we see them. for the aircraft owner. Posted at 11:12h in don franklin oil change somerset ky by royal We like to think that those we deal with are honest, however, there's a chance of impropiety by a seller, so when buying an airplane, be careful. stoppage inspection, we are your source for engine from 54 agencies. And two, "The preceding definitions include situations where an aircraft is stationary and the landing gear collapses causing one or more blades to be substantially bent, or where a hangar door (or other object) strikes the propeller blade. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. New posts Search forums. The rationale for this hub retirement criteria revolves around the fact that forces great enough to bend blades beyond their respective repair limits represent loads that are in excess of those that the hubs were designed to withstand, while providing sufficient structural safety margins.". Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. One of the issues that is particularly hard to quantify if you elect not to tear an engine down, post strike and choose to disregard the fairly specific diagnostic procedures that the engine makers put out is do you have the FAA legal option of ignoring the service directives? Still others will only pay for the labor to do the job and will not pay for any parts. Note the recurring theme of the loss of rpm or sudden stoppage of the engine runs as a key criteria for an internal inspection among the makers as well as the FAA. Russell says, it should be noted that to comply with A.D. note 91-14-22, the engine does not need to be completely disassembled and that access to the accessory gear train can be accomplished, in most cases, with the engine still installed in the aircraft. A prop that hits so hard as to bend the crank flange is only one of several considerations. It turned out to be a salvage shop and the owner confirmed that the logs for the engine were available, and the crank had been dialed, and found to be OK. Dialing checks the run-out, which is the amount of movement at the flange when the crank is rotated. 01/17/2023, 249 So, when it comes time for that prop strike/sudden. Got a nick on your prop? But it's getting harder Continued evaluation of crankshafts lots with serial numbers (SN's) other than those that were listed in AD 2000-08-51, has detected the same condition in those crankshaft lots. Well, for one i dont think i want to take out any of the clubs planes ever again. As for whether the inspection should be done, Anderson said he couldn't answer for anyone but himself; however, he wouldn't hesitate if it were his engine. What looks like light damage may sometimes result in something broken or highly stressed inside, while a major collision shows nothing wrong after it's been torn down." Propeller inspections are fairly clear cut damage on the blades is typically quite apparent, and the existence of damage beyond field repair limits dictates that the unit is disassembled and given a searching internal inspection, and in some cases, complete overhaul. A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. But what is a prop strike and what exactly are the ramifications? Contact TCM to obtain additional rotobroach bits. Emergency AD 2000-08-51 was sent to all known U.S. owners and operators of Teledyne Continental Motors (TCM) IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550, and TSIOL-550 series reciprocating engines by individual letters. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. This damage can result in catastrophic engine failure. It is not an official legal edition of the Federal CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. Phone: (813) 752-3711 We will not be discussing damage to the prop in this article since there is so much information on prop damage that does not involve engine tear downs. documents in the last year, 946 Located in Burlington, North Carolina, we provide an array of aircraft maintenance services, including engine, cylinder, and propeller overhaul and repair. That said, we did an article a few years ago where an owner of an old Bonanza bought an IO-520 engine from another Bonanza engine owner who upgraded to a factory IO-550. In this Issue, Documents legal research should verify their results against an official edition of In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. According to the salvage yard, the prop strike came about after an out-of-fuel landing on a road in Louisiana. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. What this all boils down to is that in the case of any accidental damage to a propeller installed on a aircraft operating under Part 91 of the FARs, it is up to the inspecting mechanic to determine if the engine should continue in service without total disassembly and inspection, or only the SB 475C level of inspection if a Lycoming engine falls into that category. Its entirely possible after a sudden engine stoppage for there to be severe internal damage and yet the prop looks perfectly OK even if the prop was either totally stopped or the rpm dropped by the incident. The argument goes would you rather be paying for an in flight engine failure 100 hours from now. on FederalRegister.gov A propeller strike can occur at taxi speeds and during touch-and-go operations with propeller tip ground contact. This amendment requires removing a core sample of material from the propeller mounting flange of certain crankshafts, and sending the core sample to TCM for evaluation. So my question was, should I overhaul the present engine or look for one with good logs? Dialing in the flange is worthless for this. documents in the last year, 675 In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). Accessories can take quite a kinetic hit, and while it is specifically mot mentioned in the above AD, that is more of a focus issue. The general consensus is that at least some degree of tear-down is the only safe option under their definition, and largely follows manufacturer data in the general damage/repair evaluation techniques. Finding out what needs to be done and whether that agrees with what you feel should be done, whos going to do it and who is going to pay for it, should help make the experience of a prop strike/sudden stoppage as painless as possible. better and aid in comparing the online edition to the print edition. The OFR/GPO partnership is committed to presenting accurate and reliable documents in the last year, 90 The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. Now I had to determine the consequences. There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. I spoke with several shop owners and asked their opinion. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. This amendment is prompted by reports of crankshaft failures, and by the addition of additional crankshaft serial numbers (SN) that have been added to the suspect population. Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this notice must submit a self-addressed, stamped postcard on which the following statement is made: Comments to Docket Number 2000-NE-16-AD. The postcard will be date stamped and returned to the commenter. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. Both Lycoming and Continental have very specific requirements for disassembly and inspection. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. Lycoming, in their prop-strike Service Bulletin 533A, takes the approach that the safest procedure is to take the engine apart for inspection following any incident involving propeller blade damage. My investigation started with my need for another engine for my Cessna 210. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. If the engine was assembled new, rebuilt, or overhauled on or before March 31, 1998, or on or after April 1, 2000, no action is required. Mahlon Russell, production manager for Mattituck Aviation Corporation, an engine overhauler in Mattituck, NY, says, "The only pertinent FAA definition that I have been able to find for sudden stoppage' is in Advisory Circular 43.13-1A. Re: O-360 propeller indexing (noticeable slight vibration) Lycoming O-360 A-1As (and every other O-360 Ive met) propellers should be indexed such that the propeller stops at the 10 and 4 o'clock position (viewed from the front facing aft) when the engine shuts down. During the subsequent takeoff, the airplane's right wing hit the mirror of a semitruck, which veered the airplane into a fire truck and eventually a ditch. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. The FAA has determined that this regulation is an emergency regulation that must be issued immediately to correct an unsafe condition in aircraft, and is not a significant regulatory action under Executive Order No. Register documents. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: (It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): FAA Partners With Korea On Advanced Air Mobility, Guest Blog: Why Aircraft Engines Should Be Hard To Start, Southwest: The Ghost Of Jack Welch Part II, And Now, A ChatBot For All Your Aviation Questions, Best Of The Web: How The Rolls-Royce Merlin Became A World, Best Of The Web: Why Wingsuits Are Flight As Pure As, General Aviation Accident Bulletin, January 16, 2023, Top Letters And Comments, January 13, 2023, National Museum Of The U.S. Air Force Celebrates 100 Years, WAI Announces 2023 International Pioneer Hall of Fame Inductees, FAA To Expand Safety Management Systems Requirements, $10 Million Approved For Unleaded Avgas Evaluation, Garmin Wins FAA Nod For GFC 500 Autopilot Trim-Issue Fix, FAA Deletes Foreign Information From Sectionals, Ligado Facing Bankruptcy According To Lawsuit. This can cause major internal engine damage without visible prop damage. Moreover, 43.13-1B mandates the use of approved manufacturer data (providing it exists) rather than 43.13-1B data as the required source of both inspection and repair information (Manufacturer data will be more current with more detail and part specific is the thinking). documents in the last year, 41 Consider the accessories. The one that came with the airplane had passed TBO (time between overhauls) but its logbooks didn't go back to when it came from the factory. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. 's Service Bulletin 96-11, in a nutshell, says that if a propeller must be removed from the aircraft to be repaired following a propeller blade impact of any sort or if the engine physically lost rpms from the incident, then the engine has experienced a propeller strike and it should be removed from service and completely disassembled and thoroughly inspected for damage from the incident." The President of the United States manages the operations of the Executive branch of Government through Executive orders. TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. For crankshafts identified in paragraph (a) of this AD, TCM has already determined which engines have a new suspect crankshaft installed and have identified those engines by engine SN. At least thats our goal. This is a minor or major prop repair issue, but not a potential engine tear down issue. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. The FAA has determined that all of the defects were due to unique material composition characteristics combined with process control variations that occurred during the material melt process. continental prop strike ad 21 May. Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Code of Federal Regulations (14 CFR part 39) as follows: 1. offers a preview of documents scheduled to appear in the next day's documents in the last year, 973 Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. documents in the last year. 01/17/2023, 284 SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. documents in the last year, by the Federal Communications Commission In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). A propeller strike is dangerous, not only because it damages the propeller but also because it can Thread starterkevmor99. documents in the last year, 876 The pressure from an owner to ignore the engine and fix the prop may be great, but it is certainly in the best interest of the mechanic's career to persuade the owner that any amount of damage to the propeller constitutes the need for a thorough inspection. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. We dont have such trust unless we know a whole lot about who we are dealing with and have all the proper logs and background checks-especially in the Internet age there is no excuse to not do a lot of digging on who and what you are dealing with. For He's found that a major strike will probably stop an engine turning under 2,000 rpm, but over that speed the blades will usually bend. the material on FederalRegister.gov is accurately displayed, consistent with FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 Federal Register issue. 552(a) and 1 CFR part 51. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. Compliance with this service bulletin is mandatory per AD 91-14-22. More information and documentation can be found in our Steve Panagotacos of ProCraft Aviation, a major repair facility at Corona Municipal Airport, said to look for wrinkles in the firewall or Cherry Max rivets in the fuselage, two sure signs of an accident. What other services or inspections are being performed at the same time as the inspection? electronic version on GPOs govinfo.gov. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a drop in revolutions per minute (RPM) and also requires structural repair of the propeller (incidents requiring only paint touch-up are not included). Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. [FR Doc. ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. Should he also have performed the obligatory engine inspections? That engine may be a time bomb, and an illegal one if the data plate is still on the engine, as after some mods it no longer qualifies as a certified engine, and may not be economically able to be recertified, depending on what was done to it. The actions specified by this AD are intended to prevent fracture of the crankshaft connecting rod journal, which could result in total engine power loss, in-flight engine failure and possible forced landing. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: On numerous occasions Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). The engine makers seem to agree quite strongly as does the FAA. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. #1. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. Definition of Propeller Strike (i) For the purposes of this AD, a propeller strike is defined as follows: (1) Any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades. A full overhaul will cost about $12,500 plus accessories. You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. Aircraft was involved in a prop strike. On the record, owners said that if someone came into their shop and said he or she had an aircraft with a prop strike, they would follow the procedures outlined above to the letter. My group also argued about the propeller hitting grass and water. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? In this case however, there is an existing AD for quite a few differentLycoming engines that specifically mentions prop strikes and mandates some degree of tear down, but not necessarily a full tear down, and only if it is a prop strike as opposed to a sudden stoppage. It defines a sudden engine stoppage as; stopping an engine in one revolution or less for any reason, be it from propeller impact or from an engine failure of some sort. Use the PDF linked in the document sidebar for the official electronic format. (ii) You may use each rotobroach bit to obtain up to six core samples. Kiss the old days goodbye. continental prop strike ad. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Atlanta ACO. If you've attended AirVenture or any of the other major airshows, you've heard it. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. (b) After the effective date of this AD, do not install a crankshaft with a SN that is Start Printed Page 70656listed in MSB 00-5C, dated October 10, 2000, unless core samples have been taken and TCM has approved it for return to service. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. (1) Do the crankshaft material inspection (crankshaft propeller flange core sample) in accordance with sections A through J of TCM MSB 00-5C, dated October 10, 2000, as follows: (i) Use the specialized tools and equipment provided by TCM as listed in section A of TCM MSB 00-5C, dated October 10, 2000. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. The oil pump on the Continental IO-360 is driven by a very small shaft, for instance, and can be easily sheared as a result of a strike," says DeJoris. What you see in the pictures is what you are getting. Any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM, such as propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. documents in the last year, 117 documents in the last year, by the Veterans Affairs Department AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. This document has been published in the Federal Register. The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. Lycoming's Service Bulletin 475B requires that in the event that the engine has experienced a propeller strike, inspection and possible rework of the accessory gear train as well as the rear of the engine's crankshaft is required. On Lycoming engines, which are not nitrided, the flange can be bent. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. Type of operator/engine makes a difference (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. Factory New & Factory Rebuilt Gasoline Engines +1.251.436.8101 08:00 - 17:00 Gasoline Engine Overhauls & MRO +1.251.990.5080 08:00 - 17:00 Technical Support (AvGas & On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. (f) This amendment becomes effective on December 12, 2000. TCM is less equivocal. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. But let me start this section with a caveat: There is no black and white, and the subject under discussion is the grayest of the gray areas. Start dateSep 28, 2016. A Textron Lycoming engine, that is being operated on a Part 91 aircraft, that had a sudden engine stoppage, not a propeller strike, must comply with AD 91-14-22 and Service Bulletin 475B at a minimum. Sun Sep 23, 2018 8:02 pm. (c) Crankshaft material inspections (crankshaft propeller flange core samples) that were done using TCM MSB 00-5, dated April 14, 2000; MSB 00-5A, dated April 28, 2000; or MSB 00-5B, dated May 25, 2000, comply with this AD and must not be repeated. There's also the cost of inspection of the accessories, which is extra. My investigation started with my need for another engine for my Cessna 210. +1.251.436.8122 08:00 - 17:00 Gasoline Engines Parts +1.972.586.1000 24 hours Avionics +1.251.990.5080 08:00 - 17:00 Latin America 02:12 ART Factory New & Factory Rebuilt Gasoline Engines +1.251.436.8101 10:00 - 19:00 Gasoline Engine Overhauls & MRO +55.11.99923.9579 08:00 - 17:00 Technical Support (AvGas & Jet-A) +1.888.826.5465 09:00 - 2023 Endeavor Business Media, LLC. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. There is also a measure of anecdotal evidence in the engine accident/incident statistics that engines that have a prop strike/sudden stoppage and owners who did not follow the manufacturer recommendations such as only checking the crankshaft run-out, have a higher incidence of broken cranks or other engine failures a number of flight hours later. DeJoris says he is dealing with claims adjusters on a regular basis, and many adjusters today choose to have you go the extra mile and tear down the entire engine and propeller and do a thorough inspection." Even tip damage is considered cause for teardown As mentioned earlier, Advisory Circular 43.13-1B, Chapter 8 defines a sudden engine stoppage as stopping an operating engine in one revolution or less for any reason, period, and includes prop-strike damage as a subset of the of sudden stoppage definition (at least the way we interpret the way it is written). It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. For those engines that were overhauled in the field with factory new crankshafts, the crankshaft SN should be shown in work orders, log books or other maintenance records. documents in the last year, 28 Jerry Robinette, Senior Engineer, Propulsion, Atlanta Aircraft Certification Office, FAA, Small Airplane Directorate, One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta, GA 30349; telephone: (770) 703-6096, fax: (770) 703-6097. You could identify its sound with your eyes closed. The engine SN can be found in logbooks or other maintenance records. The flange will break before it bends. If you need someone to remove and reinstall the engine, that's another $1,800. documents in the last year, 37 So carefully consider all factors related to propeller strikes. Lycoming engines that specifically mentions prop strikes and mandates some degree of tear down, but not necessarily a full tear down, and only if it is a prop strike as opposed to a sudden stoppage. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. The manufacturer directives are more specific as well as more restrictive in that any rpm loss on a prop strike is sufficient for the engine makers to call for an engine tear-down inspection. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. He also said that if you have a prop strike while traveling, don't go to the first shop you see and turn the airplane over to it. Say the engine is turning only 1000 rpm, barely above an idle. How much liability insurance do you have? Are there any hidden costs? Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify the rule. the official SGML-based PDF version on govinfo.gov, those relying on it for If you have a favorite mechanic, he may know someone in the area who will pull the enginethis takes only a few hoursand ship it wherever you want. Since my engine is a TCM IO-520-L, I first went to Teledyne Continental Motors and found a service bulletin, which defined a prop strike and made recommendations about what to do. Their decision would involve the specific engine involved, the severity of the prop damage, the cost, the time on the engine, whether the prop was stopped or appreciably slowed, who was flying at the time, what else is going on in the shop, and maybe the time of year and their mother's maiden name. This article originally appeared in the December 2012 issue of Light Plane Maintenance. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. on These can be useful This occurred during several discrete periods, i.e. The documents posted on this site are XML renditions of published Federal establishing the XML-based Federal Register as an ACFR-sanctioned Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. Forums. TCM-powered aircraft operating under Part 135 of the FARs that have to comply with all manufacturers service bulletins would have to comply with Service Bulletin 96-11B, dealing with prop strikes, dated July 2008, requiring total The answer is yes, you can ignore the directive to the same degree that any one who operates under Part 91 does with any other service directive without the force of an AD behind it. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. 12866. headings within the legal text of Federal Register documents. Compliance with the requirements of this AD is required within the next 10 hours time-in-service from the effective date of this AD, unless already done. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. Second, any time foreign object damage requires propeller removal for repairs other than the minor dressing of the blades as mentioned above, the incident is considered a propeller strike and must be inspected as outlined in SB 96-11B. Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. that agencies use to create their documents. the Federal Register. One, "A sudden rpm drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred." documents in the last year, 12 You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. Disregard the letter R.. He also said prospective owners should review the logs to see if the propeller has been changed. documents in the last year, 830 They either read full or This could indicate a gear-up landing, or other source of damage that took time to fix. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. documents in the last year, 1401 In addition, propeller strikes also include situations where an aircraft is Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental developer tools pages. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. and services, go to For complete information about, and access to, our official publications This year's numbers have placed us in the top 10, highlighting another strong year of property development. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. Russell explains, "Aircraft operating under Part 135 of the FARs must comply with all manufacturer's service bulletins, and would have to comply with Service Bulletin 96-11 requiring total disassembly and inspection after any incident that required removal of the propeller for repairs or if the engine physically lost rpms during the incident. Continental Motors states: A propeller strike is: (1) any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades as set Always rely on the FAA certified inspecting technician, applicable service data and the FARs to dictate how thorough an inspection is necessary to continue the engine in service. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal.". Think of it as the equivalent of a high-speed twist drill, with great resistance to bending-it tends to snap or develop cracks from damage and fails suddenly. This prototype edition of the the most are "prop strike." Also, some engines with a gear-driven alternator have a large, relatively thin and very vulnerable gear bolted to the forward end of the crankshaft. Any decision to operate an engine which was involved in a sudden stoppage, propeller/rotor strike or loss of propeller/rotor blade or tip without such an inspection must be the responsibility of the agency returning the aircraft to service. Service bulletins are one thing, but the real information comes from the people working in the field. No more filing blades a bit shorter after a tip strike, or performing a run-up and signing off on an engine after the runway lights have been mowed a bit shorter. Prop strike. These two words are guaranteed to make any pilot wince. the most are "prop strike." This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Recent changes in the approach to propeller strikes dictated by Airworthiness Directives, engine manufacturer Service Letters, and insurance company policy have made anything less than a thorough teardown and NDT inspection unacceptable. on NARA's archives.gov. I won't list them all here, but some of the more expensive ones are: hydraulic valve lifters, connecting rod bearings, the crankshaft's main and thrust bearings, all needle, ball, and roller bearings, exhaust valves, valve springs, piston pins, pistons, crankcase through bolts, all the hardware, seals, gaskets, O-rings, and lots of other small stuff. If the engine is being disassembled does the estimate include testing after reassembly? PROPELLER STRIKE INSPECTIONS. Each document posted on the site includes a link to the Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. After defining a prop strike, TCM's SB 96-11A states: "A. Propeller strike inspections. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Inspect all engine accessories in accordance with the manufacturer's instructions." Secure the airplane and figure that it will be out of commission for a few months. If it has, and there's no indication in the engine logs about a teardown and inspection, it's time for a long explanation from the seller. Maybe it is and maybe it isn't." documents in the last year, 84 In fact, the customers were sold their own crank. John Schwaner, author of the Sky Ranch Engineering Manual, a must have for all those interested in aircraft engines, and owner of Sacramento Sky Ranch, in Sacramento, California, said the quandary is, "How do you know if something is good or not? Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. A. for better understanding how a document is structured but If it is determined that this emergency regulation otherwise would be significant under DOT Regulatory Policies and Procedures, a final regulatory evaluation will be prepared and placed in the Rules Docket. In our response to readers we quote the latest manufacturer directives and FAA guidance, and add our perspectives and experience to hopefully help the owner feel his or her ultimate decision is the right and legal one. Some reports are quite specific about a recent prop strike in the engines history. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. There used to be, but it was kind of informal and there was a lot open to interpretation. Propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. To comply with AD 2004-10-14, if it applies to your engine, the engine does not need to be completely disassembled and access to the accessory gear train can be accomplished, in most cases, with the engine still installed in the aircraft. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Federal Register. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved After the extent of the inspection has been determined, it is important, as with any major repairs that are accomplished on your aircraft, to find out exactly what is included in the estimate to repair your engine following a prop strike. At what point after a prop strike do you need an engine teardown and inspection? K. kevmor99. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. Ken Tunnel of Lycon Aircraft Engines in Visalia, California, an engine facility used by a number of owners of show airplanes, said, "There's no way you can tell if there's any damage regardless of the circumstances. The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. A propeller strike is: (1) any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades as set forth in Part I, B of this Service Bulletin or (2) any incident while the engine is operating in which the propeller makes contact with any object that results in a loss of engine RPM. Lycoming is particularly concerned with this area and outlines specific inspection criteria with the force of AD 2004-10-14 to support their bulletin SB 475C depending on engine model. I took the ad to an engine overhaul shop, Corona Cylinder and Engine Overhaul in Corona, California, and had the owner, Joe Anderson, call the person selling the engine. "The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. Now that I had a definition, what would I have to do about such an event? documents in the last year, 16 The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he or she feels that it is the prudent and responsible thing to do. PROP STRIKE. S/N: 217920-73J Contact Sales Staff - TEXAS AIR SALVAGE, - located Bloomburg, TX 75556 United States Telephone: 9032557878 Posted January 9, 2023 Show all Ads posted by this Advertiser Recommend This Ad to a Friend I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. The authority citation for part 39 continues to read as follows: Authority: Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Sticking with a certified repair facility possessing all the skills and tools will probably reduce the extra shipping costs and time involved to get individual parts examined seems most efficient to us. Do we think the engine makers are overly eager to have you tear down or dig into your engine? AC 43.13-1B has a great deal to say about what should be done in the manner of inspections and actions, and all the statements are preceded by the word must such as following the manufacturer directives as the priority action, with emphasis on the importance of a teardown when the event meets the criteria. Effective December 12, 2000. publication in the future. Crankshafts with this type of subsurface defect will fail. Aircraft Owners & Pilots Association Find it free on the store. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is.". McCauley hubs must be retired if any of the blades within the assembly are bent beyond repair limits inboard of the 85 percent blade radius. The service information referenced in this AD may be obtained from Teledyne Continental Motors, PO Box 90, Mobile, AL 36601; telephone toll free 1-888-200-7565, or on Textron Lycoming must take the position that in the case of a sudden engine stoppage, propeller/rotor strike or loss of propeller/rotor blade or tip, the safest procedure is to remove and disassemble the engine and completely inspect the reciprocating and rotating parts including crankshaft gear and dowel parts. Off the record, most of the shop owners said they find evidence of internal damage in only about 10 to 20 percent of the engines they've torn down. The alternator is turning 3000 rpm because of gearing. A tear down of most direct drive engines isnt a major repair but we recommend using a certified repair station or the factory for that action as well as the level of NDT testing will be significant and required to be done by certified people for such critical NDT inspections. documents in the last year, by the Fish and Wildlife Service Others will pay for all costs for the inspection and for any parts needed due to the incident. Register, and does not replace the official print version or the official 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. to a sudden stop. Its possible to do major engine/accessory damage without obviously damaging the prop by hitting water or heavy, tall grass that stops or slows the running engine. These counterweights move on relatively soft bushings. certain lots, of steel production or forming operations. On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne Continental Motors IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550, and TSIOL-550 series reciprocating engines. The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. documents in the last year, 1487 TCM SB 96-11B defines a propeller strike as follows, and we paraphrase: First, any incident, whether or not the engine is operating, that requires repair to the propeller other than minor dressing of the blades, for instance where the propeller is damaged by a small foreign object during operation, such as a small stone. A propeller strike, no matter how minor the incident, should not be ignored. Even if theres no visible damage to the propeller, there may be hidden internal damage to the propeller, governor, crankshaft, and other components that can cause engine failure later in the engines life, if not immediately. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. And anyway, who needs NOTAMs? A propeller strike (according to this Lycoming bulletin) is defined as follows:(It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): Circumstances which surround accidents are many and varied; therefore, the circumstances of the accident can not, in our opinion, be used to predict the extent of the damage to the engine or assure its future reliability. Refer McCauley Service Bulletin 137W. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" This damage can result in catastrophic engine failure. Since an unsafe condition has been identified that is likely to exist or develop on other engines of this same type design, this airworthiness directive (AD) requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Docket 2000-NE-16-AD. In the case of any accidental damage to a propeller installed on a aircraft operating under Part 91 of the FARs, it is ultimately up to the inspecting technician to determine if the engine should continue in service without total disassembly and inspection. on Some geared alternators shafts use gears that are designed to slip on overloads, but older versions of this alternator gear do not have this design, and the gear shear design is for an alternator failure not a crank stoppage. It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). on And as we previously mentioned, the Lycoming 475C bulletin is broader than a prop strike; it is oriented to general engine overhaul crank inspections or crankshaft gear removal for inspection as well as prop strikes. How much grass and how deep should the water be, and how sudden is "sudden," and what constitutes an rpm drop? Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. 1 in 2022, Southwest To Build Aircraft Hangar, Create 100 Jobs at Reid Airport, Boeing, United Airlines Finalize 737 MAX and 787 Order, Including Record Purchase for 100 Dreamliners. According to John DeJoris, president of Aircraft Propeller Service Inc., in Wheeling, IL, "The FAA has embraced the policy that any type of propeller strike is a cause for teardown and engine manufacturers are quickly jumping on board. The Public Inspection page may also Until the ACFR grants it official status, the XML He used a football analogy of a player who can be brutally tackled and get right up, then trip over a bucket and break his leg. If possible, he suggests, mark the flange somehow, or take a photo of the scratches and nicks so you can compare it to the "new" one later. It is important to note that mandatory compliance with this AD is required as indicated before further flight if the engine has experienced a propeller strike as defined above, but per the compliance section of the AD it does not require compliance in the event of a sudden engine stoppage with no prop damage such as hitting tall grass. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. Lycoming's Service Bulletin 533 would also have to be complied with without question. We have personally seen an instance where a plane lost the entire prop in flight following a so called minor prior strike of hitting a runway light while taxing, but the crank on the IO-520 was only checked for run-out and prop repaired (and this was a Part 135 operated plane). And what's a "solid object?" Both Lycoming and Continental express concerns about prop-strikes causing damage to the rear of the crank in the vicinity of the rear radius of the oil slinger, which can be shoved back into the case rear. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. The actions are required to be accomplished in accordance with the service bulletin described previously. AD/PROP/1 Amdt 2 (continued) Page 6 of 9 HOFFMAN (continued) Continental IO-346 engines 1000 All other Fixed Pitch Types 2000 Flottorp storage, overspeed, ground strike or aerobatic requirements refer mt-propeller Service Bulletin 1 Revision X. Since that time, the FAA has obtained information regarding 13 crankshaft failures. PROPELLER STRIKE INSPECTIONS. 01/17/2023, 159 But what is a prop strike and what exactly are the ramifications? This is one failure no one wants to experience. The accident was recorded on video and available on the Internet. Since a situation exists that requires the immediate adoption of this regulation, it is found that notice and opportunity for prior public comment hereon are impracticable, and that good cause exists for making this amendment effective in less than 30 days. We know of no ADs on TCM engines in this area to muddy the waters, so its the owners decision unless they are operating other than under Part 91, such as Part 135 where compliance with service directives is typically mandatory. continental prop strike ad. The bulletin reads as follows: The simple physics of a prop strike, in our opinion, makes a compelling case for an internal engine inspection with visual and thorough NDT techniques. A slam stop will detune the weights and damage the bushings so they can no longer do their job of helping to balance the crank while operating. tulane campus health pharmacy address, orange marmalade recipe jamie oliver, edward hibbert syndrome, 7700 eastport parkway charge, alumacraft canoes 17, why did delaney and bonnie divorce, lakeview chicago crime, army sustains and improves examples, what are the 4 principles of the fish philosophy, ferncroft country club membership cost, 508 bus stop leeds city centre, lutheran immigration and refugee service payment, earthlink webmail, deborah dubois obituary, lifted trucks for sale dallas,
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