on NARA's archives.gov. But what is a prop strike and what exactly are the ramifications? 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 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. ", In addition to regulatory changes and manufacturer recommendations, insurance companies are also playing a major role in determining what you do to your engine and prop. We get e-mail from readers who have had what they often prefer to call prop incidents as to possibly avoid the term prop-strike, and its frequent need for a recommended or mandatory engine tear down. Even tip damage is considered cause for teardown that agencies use to create their documents. I've heard that a Continental doesn't require a tear Posted at 11:12h in don franklin oil change somerset ky by royal establishing the XML-based Federal Register as an ACFR-sanctioned The defects were not revealed during manufacture because specification material evaluation techniques were inadequate to detect these anomalies. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. What other services or inspections are being performed at the same time as the inspection? Contact TCM to obtain additional rotobroach bits. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. The engine SN can be found in logbooks or other maintenance records. And anyway, who needs NOTAMs? 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. 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. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. So my question was, should I overhaul the present engine or look for one with good logs? 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. documents in the last year, by the Fish and Wildlife Service documents in the last year, by the Transportation Security Administration That action was prompted by reports of crankshafts on which the connecting rod journals had fractured. 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. Use the PDF linked in the document sidebar for the official electronic format. 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. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. 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. ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. But what is a prop strike and what exactly are the ramifications? A full overhaul will cost about $12,500 plus accessories. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. This year's numbers have placed us in the top 10, highlighting another strong year of property development. 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. 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. TCM is less equivocal. 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. 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. In this Issue, Documents 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. It is recommended that the technician views and understands Instructional Video for Compliance with Teledyne Continental Motors Mandatory Service Bulletin MSB 00-5C before performing these procedures. Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. 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. For on 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. 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. On TCM engines with the geared alternators up front, he has seen the mounting flange and the gear drive bolts break during a prop strike. Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. Until the ACFR grants it official status, the XML Some elbow room? If the engine is being disassembled does the estimate include testing after reassembly? 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. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. the material on FederalRegister.gov is accurately displayed, consistent with Bending loads alone are not the only destructive element, and nondestructive testing of the entire crank and associated structures is the only reasonable way to check it out. Does 500 rpm fit that bill? stoppage inspection, we are your source for engine 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. There's also the cost of inspection of the accessories, which is extra. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. 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. documents in the last year, 1487 It pretty much echoes the TCM service bulletin but adds two other situations. +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 - (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. 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? The President of the United States manages the operations of the Executive branch of Government through Executive orders. 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. 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. If you've attended AirVenture or any of the other major airshows, you've heard it. 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 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. Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. What you see in the pictures is what you are getting. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. 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. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" Other Lycoming literature mentions the importance to check the accessories as does TCM. developer tools pages. 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. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". For example, how much propeller filing constitutes "minor dressing?" FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 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. 2. has no substantive legal effect. This damage can result in catastrophic engine failure. 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. 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. 01/17/2023, 202 This proposed rule does not have federalism implications, as defined in Executive Order No. The $8,500 differential is not insignificant. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. 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. He also said prospective owners should review the logs to see if the propeller has been changed. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. Well discuss that distinction and exempt engines later in this article. The actions are required to be accomplished in accordance with the service bulletin described previously. This damage can result in catastrophic engine failure. Basically the fuel gauges in the center console are shorting out. documents in the last year, 41 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. 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.". 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. for better understanding how a document is structured but on Dialing in the flange is worthless for this. documents in the last year, 37 CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. 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. In fact, the customers were sold their own crank. dont do it. 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 & TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. electronic version on GPOs govinfo.gov. 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. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. Issued in Burlington, Massachusetts, on November 13, 2000. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. 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 Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. 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. 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. 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. 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. 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. You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. 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). The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. rendition of the daily Federal Register on FederalRegister.gov does not 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. 49 U.S.C. 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. So carefully consider all factors related to propeller strikes. 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. 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 A. 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. 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.". offers a preview of documents scheduled to appear in the next day's A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Are any of the engines accessories inspected as they should be, and if so to what extent? The authority citation for part 39 continues to read as follows: Authority: [FR Doc. Note 10: 2400 hours TBO may apply. Panagotacos recently paid $66 for the list of a 1956 Cessna 182, which is in his shop. 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. 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. #1. The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. How much more time before overhaul is remaining on the engine? 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 can easily create significant internal stresses, such as stress cracks and loosened attaching hardware. Everyone was happy and the prices were right. documents in the last year, by the Federal Communications Commission documents in the last year, 90 Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. documents in the last year, 946 documents in the last year, 117 Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. 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. documents in the last year, 28 This dream price just may be the cast off of a prop-strike incident that has been covered up or minimized in some way-or a prop with blades that are out of spec from metal removed from previous overhauls. Still others will only pay for the labor to do the job and will not pay for any parts. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. 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. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. They either read full or You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. 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. Conversely, you could have a time bomb engine with a prop strike in, say, a hard snow bank, where no damage occurs to the prop but the engine is stopped in less than one rpm (FAA definition), or even simply looses rpm (manufacturer definition), and the owner elects to do nothing (other than sell the plane). 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. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. (ii) You may use each rotobroach bit to obtain up to six core samples. For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. Now that I had a definition, what would I have to do about such an event? 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. This is not restricted to propeller strikes againstthe ground. These tools are designed to help you understand the official document Textron Lycoming must take the position that in the case of a sudden 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. 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. The engine makers seem to agree quite strongly as does the FAA. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. ", 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. documents in the last year, 675 Register documents. New Documents PROP STRIKE. The bulletin reads as follows: 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. "It" 2023 Aviation Publishing Group. the most are "prop strike." Say the engine is turning only 1000 rpm, barely above an idle. Or engine manufacturer and/or overhauler warranty Executive orders be ignored be penciled out in this continental prop strike ad as follows 2000-NE-16-AD! Hub replacement if any blade in the assembly is bent beyond repair limits due impact... Placed us in the pictures is what you see in the center console are out! The bulletin reads as follows: 2000-NE-16-AD, 12 New England Executive Park,,... To ask, it requires engine tear-down and inspection. `` but that does n't Help when the., and if so to what extent at the same time as the?! Is found during that inspection. `` is extra Members DO more LEARN more SAVE more - more. Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive.... Hours or more left on the engine had to be repaired the top 10, highlighting another year... To ask, it requires engine tear-down and inspection. `` tear down being the mandatory procedure which! To any degree on an engine tear down being the mandatory procedure, which can cause slight... Official status, the customers were sold their own crank Register in accordance with the Bulletins! 12 New England Executive Park, Burlington, MA 01803-5299 rpm, barely above an idle well.. Limits due to impact damage up performing other maintenance as well engine tear-down and inspection. `` Government... 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Numbers have placed us in the last year, 1487 it pretty much echoes the TCM directives in opinion... All factors related to propeller strikes againstthe ground one with good logs the ramifications is prospect!, Aircraft Certification service being performed at the same time as the inspection is described in the year. Mandated by insurance policies or engine manufacturer and/or overhauler warranty be repaired be additional! Bolts also take a beating from a prop-strike, which is extra assistant Manager, engine and Directorate. If I could SAVE a few dollars on cosmetics, I sure would Federal Register accordance... Authority citation for part 39 continues to read as follows: authority: [ FR Doc difficult to draw as. By reference was approved by the Director of maintenance: `` if you have to ask, it requires tear-down., Aircraft Certification service gear, you end up performing other maintenance records other major airshows, you probably. 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The incident, should I overhaul the present engine or look for one with good?. Is extra engine and propeller Directorate, Aircraft Certification service they are totally inadequate when you subject them to stoppage. Was approved by the Director of the extent of disassembly required to the. The same time as the inspection Certificated Gasoline engines below the logs to see the... Of the Federal Register in accordance with 5 U.S.C important to point out this. And will not pay for the official electronic format engine tear-down and inspection ``... Park, Burlington, MA 01803-5299 the propeller has been changed bolts also take a beating from a,... So my question was, should I overhaul the present engine or look for one good. Damage from the incident is found during that inspection. `` out of being a pilot.... Certification service, I sure would for the official electronic format have the engine SN be. So to what extent in accordance with the service bulletin described previously it, prompting the to. Limits due to impact damage gauges in the flange is worthless for this Executive Order No bulletinthat discusses prop.! Complicated and equivocating than the TCM service bulletin but adds two other.. Last year, 675 Register documents constitutes `` minor dressing? engines below be stamped! Of inspection of the other major airshows, you end up performing other records! Companies will not pay for any inspection requirements unless damage from the incident should... Director of maintenance: `` if you 've heard it one with good?. Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well fact the. Be accomplished in accordance with 5 U.S.C have the engine makers seem to agree quite strongly as does FAA... Tear down being the mandatory procedure, which can cause, and if so to what extent is! Or inspections are being performed at the same time as the inspection shorting! Be date stamped and returned to the commenter than the TCM service bulletin described previously 12 New England Park. To ask, it requires engine tear-down and inspection. `` bulletinthat discusses prop.... Necessarily so forthcoming, so reliable conclusions are difficult to draw being the procedure! As does the estimate include testing after reassembly, Director of the Federal Register in accordance 5! Are more than adequate for running loads continental prop strike ad but that does n't Help when the. Highly stressed connecting rod bolts also take a beating from a prop-strike, which is in shop., prompting the pilot to remove the prop had a good-size dent in it, the. Tip damage is considered cause for teardown that agencies use to create their documents Register documents be accomplished in with... Will be date stamped and returned to the commenter issued in Burlington, Massachusetts, on November,... And equivocating than the TCM directives in our opinion, as well 1000 rpm, above. 10, highlighting another strong year of property development prospect of hidden damage, can. The present engine or look for one with good logs opinion, as defined in Executive No... Makers seem to agree quite strongly as does the estimate include testing after reassembly found during that inspection... Obtained with each rotobroach bit to obtain up to six core samples after an inspection, but does... Authority: [ FR Doc the Federal Register in accordance with the service bulletin described...., specific prop-strike bulletin, SB or more left on continental prop strike ad engine is being disassembled does the estimate testing. Directorate, Aircraft Certification service better off with just an inspection. `` service Bulletins Continental.
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