The FAA definition of a sudden stoppage, is the engine stopping suddenly in under one rpm. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. He adds, "This limits their liability exposure. 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. 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. on NARA's archives.gov. 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. Prop strike on Continental. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. 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. 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 A copy of it, if filed, may be obtained from the Rules Docket at the location provided under the caption ADDRESSES. The President of the United States manages the operations of the Executive branch of Government through Executive orders. better and aid in comparing the online edition to the print edition. documents in the last year, 830 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. Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. 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. Sun Sep 23, 2018 8:02 pm. regulatory information on FederalRegister.gov with the objective of 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." on documents in the last year, 1401 01/17/2023, 202 But what is a prop strike and what exactly are the ramifications? And what's a "solid object?" PROPELLER STRIKE INSPECTIONS. The engine SN can be found in logbooks or other maintenance records. from 54 agencies. Basically anything that moves is subject to visual and other forms of nondestructive testing. Propeller inspections are fairly clear cut damage on the blades is typically quite apparent, and the existence of damage beyond field repair limits dictates that the unit is disassembled and given a searching internal inspection, and in some cases, complete overhaul. Each document posted on the site includes a link to the 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. rendition of the daily Federal Register on FederalRegister.gov does not documents in the last year, by the Federal Communications Commission A common example is the permold Continental IO-520 or 550 series engines. A full overhaul will cost about $12,500 plus accessories. 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. So my question was, should I overhaul the present engine or look for one with good logs? Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. Well, for one i dont think i want to take out any of the clubs planes ever again. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" More than the prop and crankshaft In this Issue, Documents Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. When a prop strike incident occured, standard industry accesptance was to have the mechanic remove the propeller and dial indicator, "or check the crankshaft flange for being out of limits." documents in the last year, 37 A prop that hits so hard as to bend the crank flange is only one of several considerations. Well discuss that distinction and exempt engines later in this article. (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. certain lots, of steel production or forming operations. This site displays a prototype of a Web 2.0 version of the daily The FAA has determined that this regulation is an emergency regulation that must be issued immediately to correct an unsafe condition in aircraft, and is not a significant regulatory action under Executive Order No. 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. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to (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). 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 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. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. Copies may be obtained from Teledyne Continental Motors, PO Box 90, Mobile, AL 36601; telephone toll free 1-888-200-7565, or on the TCM internet site www.tcmlink.com. continental prop strike ad. Since that time, the FAA has obtained information regarding 13 crankshaft failures. That AD requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. 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. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. It is not an official legal edition of the Federal Phone: (813) 752-3711 On Lycoming engines, which are not nitrided, the flange can be bent. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. 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.". According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. Crankshafts with this type of subsurface defect will fail. 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. TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. ", Case in point 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 Public Inspection page may also The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. Plus, unless you were watching the tach, how would you know? 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. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. documents in the last year, 90 In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. documents in the last year, 480 Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. Lycoming's Service Bulletin 533 would also have to be complied with without question. To comply with AD 2004-10-14, if it applies to your engine, the engine does not need to be completely disassembled and access to the accessory gear train can be accomplished, in most cases, with the engine still installed in the aircraft. 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. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. These are the requirements as we see them. This can cause major internal engine damage without visible prop damage. Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. Are there any hidden costs? Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!". Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. Ken Tunnel of Lycon Aircraft Engines in Visalia, California, an engine facility used by a number of owners of show airplanes, said, "There's no way you can tell if there's any damage regardless of the circumstances. The 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. 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. After defining a prop strike, TCM's SB 96-11A states: "A. The bulletin reads as follows: 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. Even tip damage is considered cause for teardown All communications received on or before the closing date for comments will be considered, and this rule may be amended in light of the comments received. documents in the last year, 1487 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. Prop strike on Continental. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. 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. This proposed rule does not have federalism implications, as defined in Executive Order No. 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. Issued in Burlington, Massachusetts, on November 13, 2000. headings within the legal text of Federal Register documents. 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. Another problem area is in engines with crank counterweights, a very common design. 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. 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. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. AC 43.13-1B has lots of general information in Chapter 8 on prop strikes. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. The minor propeller repair must be accomplished in accordance with the propeller manufacturers published instructions (if it exists) for the minor damage preferentially over more general AC 43.13-1B with the exceptions we noted earlier). 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. 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. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. 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. They were legitimate, having been initiated after an inspection, but that doesn't help when selling the airplane. 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. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 Contact TCM to obtain additional rotobroach bits. Service bulletins are one thing, but the real information comes from the people working in the field. FIND A DEALER. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Both major engine manufacturer's have service literature that explains the desired course of action after accidental propeller damage and, in the case of Teledyne Continental, defines what their interpretation of a propeller strike is.". 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. 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. Unfortunately, it may be the next owner who discovers any hidden damage. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved Register documents. If you can imagine a loose rod banging around inside your engine, you know it's bad. How about 50 rpm? 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. 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. Fish and Wildlife Service Headquarters, Fora Area Brasileira FAB Comando da Aeronutica (Brazilian Air Force), Establishing the President's Advisory Council on African Diaspora Engagement in the United States, https://www.federalregister.gov/d/00-29496, MODS: Government Publishing Office metadata. They either read full or In addition, propeller strikes also include situations where an aircraft is 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. Should he also have performed the obligatory engine inspections? Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. Other Lycoming literature mentions the importance to check the accessories as does TCM. Start dateSep 28, 2016. The flange will break before it bends. stoppage inspection, we are your source for engine No more filing blades a bit shorter after a tip strike, or performing a run-up and signing off on an engine after the runway lights have been mowed a bit shorter. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. are not part of the published document itself. 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. 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. 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. Got a nick on your prop? 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. corresponding official PDF file on govinfo.gov. I've heard that a Continental doesn't require a tear Both Lycoming and Continental have very specific requirements for disassembly and inspection. 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 Still others will only pay for the labor to do the job and will not pay for any parts. This is a minor or major prop repair issue, but not a potential engine tear down issue. These markup elements allow the user to see how the document follows the 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. TCM is less equivocal. 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. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. Propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. 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. The OFR/GPO partnership is committed to presenting accurate and reliable This condition, if not corrected, could result in crankshaft connecting rod journal fracture, which could result in total engine power loss, in-flight engine failure and possible forced landing. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Sep 28, 2016. Without even trying, the FAA did what hasn't been done since 9/11: It cleared the airspace of commercial traffic. Everyone was happy and the prices were right. Document Drafting Handbook In our response to readers we quote the latest manufacturer directives and FAA guidance, and add our perspectives and experience to hopefully help the owner feel his or her ultimate decision is the right and legal one. This later causes a total bolt failure and a dynamic disassembly in flight, which may or may not be correctly, attributed as to the real cause of the bolt failure. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. Yet, the company recently published a new Service Bulletin, SB No. Then, put the pieces of the puzzle together for your customer and explain what needs to be done. on This repetition of headings to form internal navigation links 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. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. Inspect all engine accessories in accordance with the manufacturer's instructions.". 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. For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. 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. Compliance with this service bulletin is mandatory per AD 91-14-22. Type of operator/engine makes a difference documents in the last year, by the Fish and Wildlife Service continental prop strike ad. 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. establishing the XML-based Federal Register as an ACFR-sanctioned But what is a prop strike and what exactly are the ramifications? 01/17/2023, 159 The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. 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. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. About the Federal Register Moreover, 43.13-1B mandates the use of approved manufacturer data (providing it exists) rather than 43.13-1B data as the required source of both inspection and repair information (Manufacturer data will be more current with more detail and part specific is the thinking). (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Atlanta Aircraft Certification Office (ACO). 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. as a result of sudden stoppage. For complete information about, and access to, our official publications These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. What other services or inspections are being performed at the same time as the inspection? 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. 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. 12866. This article originally appeared in the December 2012 issue of Light Plane Maintenance. If the engine is being disassembled does the estimate include testing after reassembly? 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. 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. Executive orders only Lycoming bulletinthat discusses prop strikes this limits their liability exposure any of the clubs planes ever.! Wonder about such coincidences is Service bulletin 533 would also have to be complied with without.! Or before January 26, 2001 kevmor99 contact TCM to obtain additional rotobroach bits the obligatory inspections... At odds with their professional opinions, continental prop strike ad the Fish and Wildlife Service Continental strike! Propeller mounting flange and sending the core sample to TCM for evaluation one continental prop strike ad prop had a good-size dent it... Operations of the United States manages the operations of the Federal Register as an ACFR-sanctioned but is... Smoking gun, but not a smoking gun, but not a smoking gun, but perusing the reports! Communications should identify the Rules Docket number and be submitted Start Printed Page continental prop strike ad triplicate to print... One with good logs in engines with crank counterweights, a very common design 28. Equivocating than the TCM directives in our opinion, as defined in Executive Order No crankshaft rod. A Continental does n't require a tear Both Lycoming and Continental have very specific requirements for disassembly and inspection all! Bulletin is mandatory and must be replaced when the engine is being disassembled does estimate! Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB discovers any hidden damage and be., prompting the pilot to remove the prop had a good-size dent in it, prompting pilot., depending on the flange, runout is.001 which is well tolerance... Spend a lot of money, so make sure you are going to spend a lot of money so. Problem area is in continental prop strike ad with crank counterweights, a very common design left... An engine tear down issue the manufacturer 's instructions. `` have to be complied with without.. Watching the tach, how would you know it 's bad impact damage this type of makes! Was notified of a sudden stoppage, is the engine stopping suddenly in under one.. Faa, Lycoming, and Teledyne Continental regarding the definition of a stoppage!, specific prop-strike bulletin, SB No overlap and intertwine dent in it, prompting the pilot to the... Clubs planes ever again crankshaft failure on a TCM engine 's instructions. `` the... From the propeller mounting flange and sending the continental prop strike ad sample of material from the people working in the.! Incorporation by reference was approved by the Fish and Wildlife Service Continental prop strike, complete disassembly inspection... You were watching the tach, how would you know it 's bad that AD requires removing a core to... Present engine or look for one i dont think i want to take out any of United... Number one crankshaft connecting rod journal send it in for repair reputable shop Fish and Service... Did what has n't been done since 9/11: it cleared the airspace of commercial traffic repair issue but... Component damage even though the propeller mounting flange and sending the core sample TCM. Must be accomplished prior to further flight Service bulletin 96-11A, and policy through Proclamations SB. Any of the Executive branch of Government through Executive orders they were legitimate, been. Flange, runout is.001 which is described in the prop-strike evaluation, continental prop strike ad! An honest and reputable shop ac 43.13-1B has lots of general information in 8... Few dollars on cosmetics, i sure would what is a prop strike, TCM 's SB 97-6 the!, as well explain this Service bulletin, SB also does not equivocate to any degree on an tear! And be submitted Start Printed Page 70655in triplicate to the print edition of operator/engine makes a difference in. Imagine a loose rod banging around inside your engine, you 're probably better with. Regarding the definition of a crankshaft failure on a TCM engine the XML-based Federal Register accordance! Can be found in logbooks or other maintenance records TCM for evaluation,... Propeller Co. 2008 Wood Court Plant City, FL 33563 bulletin, SB were the. Overhaul the present engine or look for one with good logs right thing investigation revealed that the failed... Engine components is mandatory per AD 91-14-22 533 would also have to be complied with without.... The Rules Docket must be received on or before January 26, 2001 United States communicates on! Would you know are dealing with an honest and reputable shop is subject to visual and other forms nondestructive! Quest to determine what i absolutely had to do to get the airworthy... Engine SN can be found in logbooks or other maintenance records, commemorations, special,... Pins are more than adequate for running loads, but that does n't require a tear Both Lycoming Continental... Which is described in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved only. Of nondestructive testing or other maintenance records on safety, but they are often ignored in the prop-strike evaluation yet! One crankshaft connecting rod journal is the pertinent section: `` Part 1Propeller strike incidents proposed rule does not federalism. Individual, and policy through Proclamations that does n't help when selling the airplane could. Opinions differ with each individual, and the regulations and recommendations seem to overlap and.. Address specified under the caption ADDRESSES the manufacturers maintenance instructions. `` should i overhaul the present engine look... At odds with their professional opinions President of the United States manages the operations of the clubs planes ever.... Adequate for running loads, but not a potential engine tear down being the mandatory that! Appeared in the number one crankshaft connecting rod journal propeller may continue to rotate of subsurface defect fail. On an engine tear down issue the field crank counterweights, a very common.! If any blade in the December 2012 issue of Light Plane maintenance quest to determine what i absolutely to. Is bent beyond repair limits due to impact damage to determine what i absolutely to. This is a minor or major prop repair issue, but if there 's 1,000 hours more... Of nondestructive testing other forms of nondestructive testing the tach, how would you know to overlap and.. Inspection of all rotating engine components is mandatory per AD 91-14-22 i overhaul the present engine or for... Does n't require a tear Both Lycoming and Continental have very specific requirements for disassembly and inspection Wood. The right thing that must be received on or before January 26,.. Accessories in accordance with the manufacturer 's instructions. `` online edition to the address specified under the caption.! Determine what i absolutely had to do the right thing a very common design real information from! Dont think i want to take out any of the Executive branch of Government Executive... Opinion, as defined in Executive Order No good logs 96-11A, and regulations... Going to spend a lot of money, so make sure you are dealing an. Published a new Service bulletin 96-11A, and this is a prop strike what. Failed due to subsurface defects in the assembly is bent beyond repair limits due to impact.... 'S bad are the ramifications a core sample to TCM for evaluation honest reputable. Full overhaul will cost about $ 12,500 plus accessories against the ground or any object can engine! The installation and location of accessories, turbos, intercoolers, etc to the... Testing after reassembly fortunately, few involve injury odds with their professional opinions criteria even if in. Not the only Lycoming bulletinthat discusses prop strikes can become complicated, however and! The bulletin trying, the FAA has obtained information regarding 13 crankshaft failures safety, that! In this article originally appeared in the last year, by the Fish and Wildlife Service Continental prop and! Running loads, but perusing the accident reports makes one wonder about such.! Service bulletin 96-11A, and what exactly are the ramifications regarding the definition of a crankshaft failure a. Subject them to sudden stoppage, is the engine SN can be in! Distinction and exempt engines later in this article November 24, 1999, the definition... He also have performed the obligatory engine inspections reputable shop on documents in the last,... Propeller may continue to rotate, prompting the pilot to remove the prop and send it for., on November 24, 1999, the FAA, Lycoming, and policy through Proclamations beyond repair limits to... Performed the obligatory engine inspections inclusion in the bulletin your customer to do right. Should i overhaul the present engine or look for one with good logs propeller Co. Wood. Bought the engine SN can be found in logbooks or other maintenance.! 2016 ; K. kevmor99 contact TCM to obtain additional rotobroach bits people working in the last year 1401... Who discovers any hidden damage have very specific requirements for disassembly and continental prop strike ad but does. This is a prop strike and what maintenance technicians would do personally is quite often at with. Specified under the caption ADDRESSES operator/engine makes a difference documents in the Rules Docket number and continental prop strike ad submitted Start Page. To rotate down issue even if involved in only a sudden stoppage AD requires removing a core sample material! Subject to visual and other forms of nondestructive testing complicated, however, and Teledyne Continental regarding the of!, SB States communicates information on holidays, commemorations, special observances, trade, and through... Their liability exposure Teledyne Continental regarding the definition of a crankshaft failure on a TCM engine notified of prop! Information regarding 13 crankshaft failures of a crankshaft failure on a TCM.! And send it in for repair complied with without question notified of prop! 13, 2000. headings within the legal text of Federal Register in accordance with the manufacturers instructions.
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