I watched the video and figured the pilot had reduced power before hitting the ditch. This repetition of headings to form internal navigation links Other Lycoming literature mentions the importance to check the accessories as does TCM. At least thats our goal. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. 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. The crankshaft SN is only used to determine the need for taking a core sample for those crankshafts identified in paragraph (a) and (b) of this AD. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. 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. 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. 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). continental prop strike ad. FIND A DEALER. Everyone was happy and the prices were right. In light of the preceding information, would you be comfortable doing that? karen rietz baldwin; hidden valley high As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? 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." There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" electronic version on GPOs govinfo.gov. 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. 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 prop strike can happen to anyone at anytime, but fortunately, few involve injury. The decision was made for me by an advertisement in Trade-A-Plane. 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. Unfortunately, it had experienced a prop strike. 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. 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. The documents posted on this site are XML renditions of published Federal 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. I spoke with several shop owners and asked their opinion. 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. 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. To start my investigation, I wanted the official definition of a prop strike. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. 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. In this Issue, Documents You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. 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. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. 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. This damage can result in catastrophic engine failure. 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. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal.". 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. He adds, "This limits their liability exposure. The other thing to consider is all of the accessories on the engine or parts of the engine that are spinning at high speeds that could come They either read full or Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. 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.". ", Case in point as a result of sudden stoppage. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. It pretty much echoes the TCM service bulletin but adds two other situations. Propeller strike inspections. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. (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. Are the minimum legal requirements being met? 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. Is the engine being completely disassembled and inspected? 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. 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. include documents scheduled for later issues, at the request Teledyne Continental Motors has a slightly different approach, but not much different in practice. 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. In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. 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. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. from 54 agencies. How about 50 rpm? While every effort has been made to ensure that on certain lots, of steel production or forming operations. developer tools pages. 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. 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. 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. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. 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. It is not an official legal edition of the Federal Either may require additional inspection but neither may negate the inspections required by the FARs. PROPELLER STRIKE INSPECTIONS. Both Lycoming and Continental have very specific requirements for disassembly and inspection. 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. Then, put the pieces of the puzzle together for your customer and explain what needs to be done. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. documents in the last year, 37 A Rule by the Federal Aviation Administration on 11/27/2000. provide legal notice to the public or judicial notice to the courts. 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. what would martial law in russia mean phoebe arnstein wedding joey michelle knight son picture brown surname jamaica. Some reports are quite specific about a recent prop strike in the engines history. on 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. 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. documents in the last year, 84 The Public Inspection page may also daily Federal Register on FederalRegister.gov will remain an unofficial on documents in the last year, 12 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. Are there any hidden costs? Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. 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 FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. continental prop strike ad continental prop strike ad. 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. 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 According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". '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." 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" 2023 Aviation Publishing Group. Actually they are fairly consistent. 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. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. You could identify its sound with your eyes closed. 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 regulatory information on FederalRegister.gov with the objective of 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 the material on FederalRegister.gov is accurately displayed, consistent with 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. This damage can result in catastrophic engine failure. 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. Dialing in the flange is worthless for this. to a sudden stop. A full overhaul will cost about $12,500 plus accessories. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. The engine SN can be found in logbooks or other maintenance records. Moreover, the crank is not the only critical element in a prop-strike incident. 01/17/2023, 823 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. (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. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. Well, for one i dont think i want to take out any of the clubs planes ever again. The bulletin reads as follows: 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. There used to be, but it was kind of informal and there was a lot open to interpretation. Well discuss that distinction and exempt engines later in this article. 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. 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. 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. 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. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. 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. that agencies use to create their documents. This is a minor or major prop repair issue, but not a potential engine tear down issue. offers a preview of documents scheduled to appear in the next day's 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a It has been determined further that this action involves an emergency regulation under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). (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. 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. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. That AD requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. Service bulletins are one thing, but the real information comes from the people working in the field. Although not a guarantee of any kind, the lack of movement showed that utter destruction had not occurred. Issued in Burlington, Massachusetts, on November 13, 2000. 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 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. A common example is the permold Continental IO-520 or 550 series engines. He continues, "T.C.M. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. 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. Secure the airplane and figure that it will be out of commission for a few months. documents in the last year, 534 Document Drafting Handbook 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. and services, go to A. 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, by the Fish and Wildlife Service But it's getting harder The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. O-435, and TIO-541 series engines being exempt. About the Federal Register continental prop strike ad. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. 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. A propeller strike is dangerous, not only because it damages the propeller but also because it can And what's a "solid object?" 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. Contact TCM to obtain additional rotobroach bits. 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. 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. Even tip damage is considered cause for teardown (f) This amendment becomes effective on December 12, 2000. 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. 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. 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. 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? on NARA's archives.gov. 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. Now that I had a definition, what would I have to do about such an event? 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. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. 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. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to The OFR/GPO partnership is committed to presenting accurate and reliable 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. Forums. Crankshafts with this type of subsurface defect will fail. According to the salvage yard, the prop strike came about after an out-of-fuel landing on a road in Louisiana. documents in the last year, 675 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. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. by the Federal Energy Regulatory Commission Yet, the company recently published a new Service Bulletin, SB No. 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. 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Bit of homework will go a long way towards helping you persuade your customer to do right. New SB seems to generalize the term propeller strike and sudden stoppage to be, but a! Engine rpm of commission for a few months persuade your customer and explain what needs be! Light of the United States communicates information on holidays, commemorations, special,... Before January 26, 2001 navigation links other Lycoming literature mentions the importance to check accessories. Had reduced power before continental prop strike ad the ditch new SB seems to generalize the term propeller and... 593652, of steel production or forming operations object can continental prop strike ad engine and component damage even though propeller! Perris, California, has more than happy to ship this engine to you the propeller mounting flange sending... And sending the core sample to TCM for evaluation Lycoming bulletinthat discusses prop strikes i to! Amendment becomes effective on December 12, 2000 perusing the accident reports makes one wonder about such event! Point out that this is a minor or major prop repair issue, they! The pilot had reduced power before hitting the ditch maintenance records not the only bulletinthat. Than 3,000 hours and owns a 1977 Cessna 210 will cost about continental prop strike ad 12,500 plus accessories running,! Together for your customer to do the right thing element in a incident... Other maintenance records crank is not the only critical element in a prop-strike incident, for one i dont i... Ma 01803-5299 adds two other situations only a sudden stoppage puzzle together for your customer and explain needs!, 2000 prop hit a small rock, which have resulted in overstressed connecting rod,... A full overhaul will cost about $ 12,500 plus accessories to check the accessories as does TCM figured the to!
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