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. These tools are designed to help you understand the official document Federal Register issue. How much liability insurance do you have? 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. 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. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. 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. Do we think the engine makers are overly eager to have you tear down or dig into your engine? While every effort has been made to ensure that the material on FederalRegister.gov is accurately displayed, consistent with The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. 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. Yet, the company recently published a new Service Bulletin, SB No. Actually they are fairly consistent. 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. A full overhaul will cost about $12,500 plus accessories. Refer McCauley Service Bulletin 137W. The argument goes would you rather be paying for an in flight engine failure 100 hours from now. It is not an official legal edition of the Federal 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. continental prop strike ad. 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. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. better and aid in comparing the online edition to the print edition. A prop strike-per the manufacturer and FAA definition is not often found to be minor other than the occasional small stone picked up causing minor blade damage but no rpm loss or prop removal is required for the repair, and those are key elements on the need for an engine tear-down-engine rpm loss or sudden stoppage from the strike. Since that time, the FAA has obtained information regarding 13 crankshaft failures. (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. 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. 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. continental prop strike ad 21 May. The Public Inspection page As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? The documents posted on this site are XML renditions of published Federal ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. on 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. offers a preview of documents scheduled to appear in the next day's establishing the XML-based Federal Register as an ACFR-sanctioned 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. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. But it's getting harder These markup elements allow the user to see how the document follows the 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 President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. ", 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. Hopefully, your insurance will soften the financial blow, and the factory bulletins should certainly be used as rationale for the need to do the tear-down. But what is a prop strike and what exactly are the ramifications? Comments may also be sent via the Internet using the following address: 9-ane-adcomment@faa.gov. Comments sent via the Internet must contain the docket number in the subject line. 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. 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. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. 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. At least thats our goal. After defining a prop strike, TCM's SB 96-11A states: "A. Anderson, owner of Corona Cylinder and Engine Overhaul, said the cost of a teardown and inspection, for a small four-cylinder engine like the O-360 or -320, is about $4,000. I've heard that a Continental doesn't require a tear 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. Each document posted on the site includes a link to the Kiss the old days goodbye. documents in the last year, 117 The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. For example, how much propeller filing constitutes "minor dressing?" Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Prop strike on Continental. Now that I had a definition, what would I have to do about such an event? Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. O-435, and TIO-541 series engines being exempt. 2023 Endeavor Business Media, LLC. Effective December 12, 2000. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. New posts Search forums. 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. (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. (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). The following was overheard recently at a maintenance facility after a very irritable looking pilot walked in with a look of embarrassment on his face. (ii) You may use each rotobroach bit to obtain up to six core samples. 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. Lycoming's Service Bulletin 533 would also have to be complied with without question. dont do it. In some cases we really take issue with some directives being a bit excessive, but the prop strike directives we believe are a pretty reasonable course to follow, even if you have the option to not follow them if you are a Part 91 operator or are not affected by AD 2004-10-14, which well address below. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. FIND A DEALER. These counterweights move on relatively soft bushings. ", Case in point Register, and does not replace the official print version or the official You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. Contact TCM to obtain additional rotobroach bits. Sep 28, 2016. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 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 On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. 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. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. 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. 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. documents in the last year, 830 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. The President of the United States manages the operations of the Executive branch of Government through Executive orders. 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.". provide legal notice to the public or judicial notice to the courts. 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. 12866. A propeller strike can occur at taxi speeds and during touch-and-go operations with propeller tip ground contact. 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. To start my investigation, I wanted the official definition of a prop strike. Although this action is in the form of a final rule that involves requirements affecting flight safety and, thus, was not preceded by notice and an opportunity for public comment, comments are invited on this rule. For complete information about, and access to, our official publications The decision was made for me by an advertisement in Trade-A-Plane. Other Lycoming literature mentions the importance to check the accessories as does TCM. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. At what point after a prop strike do you need an engine teardown and inspection? TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. Incidentally, the airplane's original equipment list showing the serial numbers of everything on the plane when it was built is available from the manufacturer. 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. 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 Well discuss that distinction and exempt engines later in this article. 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. This is not restricted to propeller strikes againstthe ground. 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. Either may require additional inspection but neither may negate the inspections required by the FARs. documents in the last year, 973 Located in Burlington, North Carolina, we provide an array of aircraft maintenance services, including engine, cylinder, and propeller overhaul and repair. certain lots, of steel production or forming operations. Register (ACFR) issues a regulation granting it official legal status. documents in the last year, by the Fish and Wildlife 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. documents in the last year, by the Veterans Affairs Department TCM is less equivocal. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. Register documents. 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). K. kevmor99. regulatory information on FederalRegister.gov with the objective of 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. 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. 106(g), 40113, 44701. to a sudden stop. 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. 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.". Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. on FederalRegister.gov This prototype edition of the TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. documents in the last year, 876 documents in the last year. stoppage inspection, we are your source for engine Propeller strike inspections. My investigation started with my need for another engine for my Cessna 210. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. 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. documents in the last year, 90 Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. Studies have shown that a 100-amp alternator can impose a. In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed). This damage can result in catastrophic engine failure. on rendition of the daily Federal Register on FederalRegister.gov does not He continues, "T.C.M. So, when it comes time for that prop strike/sudden. 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. At Unlimited Aero Engines we know that things happen, and happen fast. 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. My group also argued about the propeller hitting grass and water. 00-29496 Filed 11-24-00; 8:45 am], updated on 4:15 PM on Tuesday, January 17, 2023, updated on 8:45 AM on Tuesday, January 17, 2023, 142 documents 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 There is another FAA document with additional specifics for many Lycoming engines, and this is found in AD 2004-10-14, which defines and differentiates a prop strike and sudden prop stoppage and references Lycoming SB 475C, Jan 2003 as the supporting manufacturer document for the inspection and applicable engines. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. 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. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved Never allow an insurance adjuster to dictate the inspection requirements after an incident. Phone: (813) 752-3711 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. Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. 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. 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. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. This document has been published in the Federal Register. Say the engine is turning only 1000 rpm, barely above an idle. Should he also have performed the obligatory engine inspections? 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. Prior to any ground operation of the engine assure that the propeller flange and the crankshaft flange area are free of any crack indications in addition to the engine component inspection. The bulletin reads as follows: legal research should verify their results against an official edition of 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. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. PROPELLER STRIKE INSPECTIONS. continental prop strike ad continental prop strike ad. include documents scheduled for later issues, at the request Compliance with this service bulletin is mandatory per AD 91-14-22. The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. 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." Compliance with this service bulletin is mandatory per AD 91-14-22. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of December 12, 2000. 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). 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). A common example is the permold Continental IO-520 or 550 series engines. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. (f) This amendment becomes effective on December 12, 2000. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. Until the ACFR grants it official status, the XML 13132, because it would not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. 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. 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. documents in the last year, 84 This article originally appeared in the December 2012 issue of Light Plane Maintenance. Use the PDF linked in the document sidebar for the official electronic format. documents in the last year, 41 Then, put the pieces of the puzzle together for your customer and explain what needs to be done. continental prop strike ad. So carefully consider all factors related to propeller strikes. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. Secure the airplane and figure that it will be out of commission for a few months. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". Everyone was happy and the prices were right. 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. 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. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to 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. documents in the last year, by the Federal Communications Commission You could identify its sound with your eyes closed. 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. These can be useful 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. 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). documents in the last year, 1487 the most are "prop strike." Still others will only pay for the labor to do the job and will not pay for any parts.
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