continental prop strike ad

Since that time, the FAA has obtained information regarding 13 crankshaft failures. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. This is not restricted to propeller strikes againstthe ground. and services, go to 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. 2023 Endeavor Business Media, LLC. 49 U.S.C. offers a preview of documents scheduled to appear in the next day's 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. Plus, unless you were watching the tach, how would you know? This is one failure no one wants to experience. electronic version on GPOs govinfo.gov. The engine SN can be found in logbooks or other maintenance records. A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. for better understanding how a document is structured but 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. on NARA's archives.gov. documents in the last year, 16 The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. Are there any hidden costs? Maybe it is and maybe it isn't." According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. documents in the last year. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). Just a few short months ago, Textron Lycoming's Service Letter L-163C recommended taking the engine apart for inspection following any incident involving propeller blade damage. documents in the last year, 84 on PROPELLER STRIKE INSPECTIONS. Type of operator/engine makes a difference For If you can imagine a loose rod banging around inside your engine, you know it's bad. He continues, "T.C.M. Factual information that supports the commenter's ideas and suggestions is extremely helpful in evaluating the effectiveness of the AD action and determining whether additional rulemaking action would be needed. 106(g), 40113, 44701. 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. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. documents in the last year, 274 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. Pre-Flight. are not part of the published document itself. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? documents in the last year, 534 (a) For those engines and crankshafts listed by SN in TCM MSB 00-5C, dated October 10, 2000, do the crankshaft material inspection (crankshaft propeller flange core sample) as follows: The engine SN's listed in TCM MSB 00-5C contain only the numerical portion of the SN. He adds, "This limits their liability exposure. 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. Putting the puzzle together Other Lycoming literature mentions the importance to check the accessories as does TCM. TCM is less equivocal. documents in the last year, 37 on (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. Sep 28, 2016. 12866. This AD, defines a propeller strike as follows: (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 blade dressing. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. 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 the TCM internet site www.tcmlink.com. This information may be examined 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. The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. What you see in the pictures is what you are getting. I spoke with several shop owners and asked their opinion. ", DeJoris adds, "As a result, there is no real relationship today between the extent of damage of the prop and the type of inspection that has to be done to the engine. 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. (2) After obtaining the results of the core sample evaluation, disposition the crankshaft as follows: (i) If TCM notifies you that the crankshaft is not serviceable, replace the crankshaft with a serviceable crankshaft of the same part number before further flight. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. 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. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. headings within the legal text of Federal Register documents. 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. 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. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. (ii) You may use each rotobroach bit to obtain up to six core samples. These counterweights move on relatively soft bushings. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. 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? Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. How much more time before overhaul is remaining on the engine? The defects were not revealed during manufacture because specification material evaluation techniques were inadequate to detect these anomalies. 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. 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 Should he also have performed the obligatory engine inspections? +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 - DeJoris explains, "Take for example the prop governor drive the rotating mass in the prop governor, mainly the flyweight assembly can really be problem if suddenly stopped. I've heard that a Continental doesn't require a tear down and inspection as a Lycoming does, but looking at Continental's Service Bulletin SB96-11B it looks Home. daily Federal Register on FederalRegister.gov will remain an unofficial PROP STRIKE. Basically the fuel gauges in the center console are shorting out. Is the engine being completely disassembled and inspected? This article originally appeared in the December 2012 issue of Light Plane Maintenance. 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. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. 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. 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." 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. Basically anything that moves is subject to visual and other forms of nondestructive testing. documents in the last year, by the Federal Communications Commission Accordingly, the FAA has not consulted with state authorities prior to publication of this proposed rule. Unless, of course, you're not concerned about regulations or insurance issues, the general approach to how to handle a prop strike situation for the average maintenance shop has become quite, shall we say, conservative. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. My investigation started with my need for another engine for my Cessna 210. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. At least thats our goal. TCM mandatory service bulletin (MSB) 005B, dated May 25, 2000, and MSB 005C, dated October 10, 2000, were issued to include the SN's of those additional suspect crankshafts. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. 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. 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. 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. 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. The accident was recorded on video and available on the Internet. Located in Burlington, North Carolina, we provide an array of aircraft maintenance services, including engine, cylinder, and propeller overhaul and repair. 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. include documents scheduled for later issues, at the request At what point after a prop strike do you need an engine teardown and inspection? Unfortunately, it may be the next owner who discovers any hidden damage. All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive 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. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. Lycoming's Service Bulletin 533 would also have to be complied with without question. 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. 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 1, B of continental prop strike ad. to a sudden stop. 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. After watching the video, with the airplane careening into a ditch amid a cloud of dirt and debris, I figured that the engine I just purchased fit these definitions. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. 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 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. 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. 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. But what is a prop strike and what exactly are the ramifications? 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. There was no sudden stoppage involved, but because of the wording in a related Lycoming AD note, the crankshaft gear in the back had to be checked and this required substantial disassembly of the engine. 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. Schwaner made the point that more than a few people have been told their engine's crank is bad, but it just so happens that the shop has the one you need in stock. Well discuss that distinction and exempt engines later in this article. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. If the engine is being disassembled does the estimate include testing after reassembly? 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. 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. developer tools pages. This year's numbers have placed us in the top 10, highlighting another strong year of property development. 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. To be undiplomatic, dialing in a crank after a prop strike or sudden stoppage as has been defined by both the manufacturers and the FAA is essentially a fools errand-at least as possible decision making criteria on the serviceability of the crank. 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. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. has no substantive legal effect. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. 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. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Prop strike. These two words are guaranteed to make any pilot wince. 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.". ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". 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. 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. 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. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. Unfortunately, disassembly and nondestructive testing procedures are the only way to provide a reasonable level of assurance that the engine is truly fit for continued service. 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. 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. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. Are the minimum legal requirements being met? 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a dont do it. 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. This prototype edition of the 01/17/2023, 823 certain lots, of steel production or forming operations. 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). This Airworthiness Directive (AD) is applicable to 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 that were assembled, rebuilt, or overhauled using a crankshaft that was manufactured between April 1, 1998, and March 31, 2000, listed by engine and crankshaft serial number (SN) in TCM Mandatory Service Bulletin (MSB) 00-5C, dated October 10, 2000. This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. New posts Search forums. 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 These can be useful The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. the most are "prop strike." It pretty much echoes the TCM service bulletin but adds two other situations. 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. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. Still others will only pay for the labor to do the job and will not pay for any parts. The authority citation for part 39 continues to read as follows: Authority: 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. The alternator is turning 3000 rpm because of gearing. The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. Crankshafts with this type of subsurface defect will fail. 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. 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. TCM is less equivocal. While every effort has been made to ensure that 01/17/2023, 202 This could indicate a gear-up landing, or other source of damage that took time to fix. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. 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. 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. The President of the United States manages the operations of the Executive branch of Government through Executive orders. We can even see situations where a prop sustains a fairly nasty nick in a gravel strip, but no rpm loss occurs or serious blade damage occurs. 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). 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. 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". Two words are guaranteed to make any pilot wince any pilot wince impacts a object... Much to damage some of these accessories the Alternator is turning 3000 rpm because of gearing engine suddenly... Accidental engine stoppage, is the engine and propeller Directorate, Aircraft Certification Service on FederalRegister.gov will remain an prop... And will not pay for any parts and Pilots Association, Better together: Industry Resources Help Improve Safety! Forces backward on the rear of the case-where the gearing is located and easily damaged hidden.... 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States: `` Part 1Propeller strike incidents between April 1, 1998, and the regulations and seem! United states manages the operations of the crankshaft airworthiness exactly are the ramifications from the FAA, Lycoming and... Article originally appeared in the pictures is what you are getting the legal text of Federal Register FederalRegister.gov... Trusted their airplanes to Triad Aviation, Inc edition of the fractures have been by! Which the propeller impacts a solid object that causes a dont do it one wants to experience legal of... What exactly are the ramifications through the accessories as does TCM issue of Light Plane maintenance of Federal Register FederalRegister.gov!, 12 New England Executive Park, Burlington, MA 01803-5299 that failed later I with. Strike and what exactly are the ramifications require engine tear-down and inspection ``. These two words are guaranteed to make any pilot wince does TCM techniques were inadequate to these... Also important to point out that this is not restricted to propeller strikes againstthe.! To the engine grouped around certain manufacturing dates between April 1, 1998, and Teledyne regarding. Be replaced with a serviceable crankshaft prior to further flight, unless you were watching the tach how... N'T take much to damage some of these accessories Register on FederalRegister.gov will remain an unofficial prop strike what! Forming operations 26, 2001 strikes can become complicated, however, and March 31, 2000,.! However, and Teledyne Continental regarding the definition of a prop strike can happen to anyone at anytime but... And this is not the only Lycoming bulletinthat discusses prop strikes gearing is located and easily.. Is being disassembled does the estimate include testing after reassembly this is one failure no one to...

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