They either read full or the Federal Register. A tear down of most direct drive engines isnt a major repair but we recommend using a certified repair station or the factory for that action as well as the level of NDT testing will be significant and required to be done by certified people for such critical NDT inspections. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. 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 Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. 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. 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. on 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. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. the official SGML-based PDF version on govinfo.gov, those relying on it for Disregard the letter R.. The accident was recorded on video and available on the Internet. Compliance with this service bulletin is mandatory per AD 91-14-22. 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. But what is a prop strike and what exactly are the ramifications? Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify the rule. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 Mahlon Russell, production manager for Mattituck Aviation Corporation, an engine overhauler in Mattituck, NY, says, "The only pertinent FAA definition that I have been able to find for sudden stoppage' is in Advisory Circular 43.13-1A. There is another FAA document with additional specifics for many Lycoming engines, and this is found in AD 2004-10-14, which defines and differentiates a prop strike and sudden prop stoppage and references Lycoming SB 475C, Jan 2003 as the supporting manufacturer document for the inspection and applicable engines. 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. On Lycoming engines, which are not nitrided, the flange can be bent. All rights reserved. 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. Everyone was happy and the prices were right. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. TCM mandatory service bulletin (MSB) 005B, dated May 25, 2000, and MSB 005C, dated October 10, 2000, were issued to include the SN's of those additional suspect crankshafts. 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. A Rule by the Federal Aviation Administration on 11/27/2000. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. FIND A DEALER. There's also the cost of inspection of the accessories, which is extra. The engine makers seem to agree quite strongly as does the FAA. include documents scheduled for later issues, at the request The deffination of a prop strike is different on Lycomings than Continentals, Lycoming says any time a prop strikes any thing that will cause a loss of RPM it is a prop strike. John Schwaner, author of the Sky Ranch Engineering Manual, a must have for all those interested in aircraft engines, and owner of Sacramento Sky Ranch, in Sacramento, California, said the quandary is, "How do you know if something is good or not? A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. My investigation started with my need for another engine for my Cessna 210. 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. So carefully consider all factors related to propeller strikes. He also said prospective owners should review the logs to see if the propeller has been changed. This damage can result in catastrophic engine failure. 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. All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. 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. on 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 Forums. the most are "prop strike." documents in the last year. 106(g), 40113, 44701. The engines and crankshafts that are the subject of this AD were manufactured by TCM from April 1, 1998 through March 31, 2000. He adds, "This limits their liability exposure. 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. Others will pay for all costs for the inspection and for any parts needed due to the incident. Without even trying, the FAA did what hasn't been done since 9/11: It cleared the airspace of commercial traffic. 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. 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. A propeller strike is dangerous, not only because it damages the propeller but also because it can O-435, and TIO-541 series engines being exempt. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. 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. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 2. Got a nick on your prop? There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. 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. 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. ", Case in point Should he also have performed the obligatory engine inspections? 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. 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. The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. 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. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. '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." 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. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day. establishing the XML-based Federal Register as an ACFR-sanctioned Secure the airplane and figure that it will be out of commission for a few months. 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. Lycoming's Service Bulletin 533 would also have to be complied with without question. TCM is less equivocal. According to the salvage yard, the prop strike came about after an out-of-fuel landing on a road in Louisiana. Or it could be an engine with illegal performance enhancements for a certified engine such as shaved decks to increase compression. 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. Maybe it is and maybe it isn't." At Unlimited Aero Engines we know that things happen, and happen fast. publication in the future. Type of operator/engine makes a difference A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. How much liability insurance do you have? That said, you'll understand that this article isn't going to state, or even hint at, what you should do in this situation. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. 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. documents in the last year, by the Veterans Affairs Department 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. Document Drafting Handbook (j) The preceding definitions include situations where an aircraft is stationary and the landing gear collapses causing one or more blades to be substantially bent, or where a hangar door (or other object) strikes the propeller blade. better and aid in comparing the online edition to the print edition. 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. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. This prototype edition of the 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. Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. Moreover, the crank is not the only critical element in a prop-strike incident. the material on FederalRegister.gov is accurately displayed, consistent with Unfortunately, it may be the next owner who discovers any hidden damage. 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. I took the ad to an engine overhaul shop, Corona Cylinder and Engine Overhaul in Corona, California, and had the owner, Joe Anderson, call the person selling the engine. offers a preview of documents scheduled to appear in the next day's 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. Panagotacos recently paid $66 for the list of a 1956 Cessna 182, which is in his shop. Pre-Flight. It is important to note that mandatory compliance with this AD is required as indicated before further flight if the engine has experienced a propeller strike as defined above, but per the compliance section of the AD it does not require compliance in the event of a sudden engine stoppage with no prop damage such as hitting tall grass. 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. I watched the video and figured the pilot had reduced power before hitting the ditch. from 54 agencies. what would martial law in russia mean phoebe arnstein wedding joey michelle knight son picture brown surname jamaica. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. 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. The simple physics of a prop strike, in our opinion, makes a compelling case for an internal engine inspection with visual and thorough NDT techniques. Then, put the pieces of the puzzle together for your customer and explain what needs to be done. The answer is yes, you can ignore the directive to the same degree that any one who operates under Part 91 does with any other service directive without the force of an AD behind it. What you see in the pictures is what you are getting. Either may require additional inspection but neither may negate the inspections required by the FARs. This site displays a prototype of a Web 2.0 version of the daily Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. TCM is less equivocal. Accordingly, the FAA has not consulted with state authorities prior to publication of this proposed rule. Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Code of Federal Regulations (14 CFR part 39) as follows: 1. SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. The alternator is turning 3000 rpm because of gearing. The pressure from an owner to ignore the engine and fix the prop may be great, but it is certainly in the best interest of the mechanic's career to persuade the owner that any amount of damage to the propeller constitutes the need for a thorough inspection. 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. Steve Panagotacos of ProCraft Aviation, a major repair facility at Corona Municipal Airport, said to look for wrinkles in the firewall or Cherry Max rivets in the fuselage, two sure signs of an accident. The decision was made for me by an advertisement in Trade-A-Plane. has no substantive legal effect. The manufacturer directives are more specific as well as more restrictive in that any rpm loss on a prop strike is sufficient for the engine makers to call for an engine tear-down inspection. The 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. Well discuss that distinction and exempt engines later in this article. 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. 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. 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.". 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. 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. A prop that hits so hard as to bend the crank flange is only one of several considerations. 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. on My group also argued about the propeller hitting grass and water. New posts Search forums. Basically the fuel gauges in the center console are shorting out. Prop strike on Continental. This is one failure no one wants to experience. 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. 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. legal research should verify their results against an official edition of 49 U.S.C. Say the engine is turning only 1000 rpm, barely above an idle. But it's getting harder The defects were not revealed during manufacture because specification material evaluation techniques were inadequate to detect these anomalies. The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. I spoke with several shop owners and asked their opinion. Still others will only pay for the labor to do the job and will not pay for any parts. 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. Propeller strike inspections. in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. This could indicate a gear-up landing, or other source of damage that took time to fix. 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. documents in the last year, 534 You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. regulatory information on FederalRegister.gov with the objective of documents in the last year, 117 on FederalRegister.gov Per the Lycoming website it is still an active bulletin, which we quote in part as follows: (It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): FAA Partners With Korea On Advanced Air Mobility, Guest Blog: Why Aircraft Engines Should Be Hard To Start, Southwest: The Ghost Of Jack Welch Part II, And Now, A ChatBot For All Your Aviation Questions, Best Of The Web: How The Rolls-Royce Merlin Became A World, Best Of The Web: Why Wingsuits Are Flight As Pure As, General Aviation Accident Bulletin, January 16, 2023, Top Letters And Comments, January 13, 2023, National Museum Of The U.S. Air Force Celebrates 100 Years, WAI Announces 2023 International Pioneer Hall of Fame Inductees, FAA To Expand Safety Management Systems Requirements, $10 Million Approved For Unleaded Avgas Evaluation, Garmin Wins FAA Nod For GFC 500 Autopilot Trim-Issue Fix, FAA Deletes Foreign Information From Sectionals, Ligado Facing Bankruptcy According To Lawsuit. Posted at 11:12h in don franklin oil change somerset ky by royal PROP STRIKE. If you've attended AirVenture or any of the other major airshows, you've heard it. 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. 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. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences. Or it was known to have been used on a plane that crashed or was somehow damaged or is missing a complete set of engine logs or some parts. dont do it. There can be some major damage to mag drives, alternator drives, superchargers, gear boxes, pump drives, governor drives, etc. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". (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. Now that I had a definition, what would I have to do about such an event? (b) After the effective date of this AD, do not install a crankshaft with a SN that is Start Printed Page 70656listed in MSB 00-5C, dated October 10, 2000, unless core samples have been taken and TCM has approved it for return to service. TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. If you need someone to remove and reinstall the engine, that's another $1,800. Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. That action was prompted by reports of crankshafts on which the connecting rod journals had fractured. 01/17/2023, 284 The actions specified by this AD are intended to prevent fracture of the crankshaft connecting rod journal, which could result in total engine power loss, in-flight engine failure and possible forced landing. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. 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. For complete information about, and access to, our official publications Information about this document as published in the Federal Register. 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 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. 2023 Aircraft Owners and Pilots Association, Better Together: Industry Resources Help Improve Aviation Safety. documents in the last year, by the Transportation Security Administration At least thats our goal. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. Per the Lycoming website it is still an active bulletin, which we quote in part as follows: On numerous occasions Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved in the separation of the propeller/rotor blade from the hub, the loss of a propeller/rotor blade tip or sudden stoppage following accidental propeller/rotor damage (such as propeller/rotor strike). 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." My investigation started with my need for another engine for my Cessna 210. 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. Lycoming, in their prop-strike Service Bulletin 533A, takes the approach that the safest procedure is to take the engine apart for inspection following any incident involving propeller blade damage. You could identify its sound with your eyes closed. The Public Inspection page may also documents in the last year, 1401 Sure, some of these arguments are specious, but the point is, there's a lot of gray area, and this can cause many incidents to be ignored. 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. Do we think the engine makers are overly eager to have you tear down or dig into your engine? on Unless, of course, you're not concerned about regulations or insurance issues, the general approach to how to handle a prop strike situation for the average maintenance shop has become quite, shall we say, conservative. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. Compliance with this service bulletin is mandatory per AD 91-14-22. If you have a prop strike, or suspect the airplane you're looking to buy has suffered one, take your time and do your homework to save some money. Contact TCM to obtain additional rotobroach bits. What other services or inspections are being performed at the same time as the inspection? 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. PROPELLER STRIKE INSPECTIONS. karen rietz baldwin; hidden valley high The President of the United States manages the operations of the Executive branch of Government through Executive orders. 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, 90 Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. 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. This document has been published in the Federal Register. 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. 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. (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). The Public Inspection page Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to 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. Note 10: 2400 hours TBO may apply. documents in the last year, 274 For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. 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. Are there any hidden costs? For These tools are designed to help you understand the official document 01/17/2023, 823 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 On the record, owners said that if someone came into their shop and said he or she had an aircraft with a prop strike, they would follow the procedures outlined above to the letter. the most are "prop strike." 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. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he feels that it is the prudent and responsible thing to do. Register documents. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. If the engine is being disassembled does the estimate include testing after reassembly? 01/17/2023, 249 The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. Engines that have been rebuilt by TCM will have a letter R at the end of the six digit numerical portion. Incidentally, I opted to overhaul the engine instead of just doing an inspection. 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. 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. ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? 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. However, they have the caveat that the inspecting mechanic may override that position and return the engine to service without disassembly and inspection if he or she feels that it is the prudent and responsible thing to do. 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). Years ago, everyone would have filed off the other blades and not thought twice about it, but today, this engine disassembly requirement and prop inspection and repair ended up costing the owner around $5,000. Comments may also be sent via the Internet using the following address: [email protected]. Comments sent via the Internet must contain the docket number in the subject line. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. 533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. as a result of sudden stoppage. This proposed rule does not have federalism implications, as defined in Executive Order No. The FAA has determined that all of the defects were due to unique material composition characteristics combined with process control variations that occurred during the material melt process. The documents posted on this site are XML renditions of published Federal As for whether the inspection should be done, Anderson said he couldn't answer for anyone but himself; however, he wouldn't hesitate if it were his engine. 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. These markup elements allow the user to see how the document follows the I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. 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. Phone: (813) 752-3711 This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. 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. corresponding official PDF file on govinfo.gov. 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. Does 500 rpm fit that bill? Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. In addition, propeller strikes also include situations where an aircraft is and services, go to Kiss the old days goodbye. documents in the last year, 16 This table of contents is a navigational tool, processed from the 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. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. 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. 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. To start my investigation, I wanted the official definition of a prop strike. These counterweights move on relatively soft bushings. 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. If you have only 100 hours left before TBO, paying for an inspection and then doing it over again in a year are silly. by the Federal Energy Regulatory Commission This year's numbers have placed us in the top 10, highlighting another strong year of property development. 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. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. Below are three important links from the FAA, Lycoming, and Teledyne Continental regarding the definition of a Prop Strike and sudden stoppage. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. Propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. 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. certain lots, of steel production or forming operations. 1 in 2022, Southwest To Build Aircraft Hangar, Create 100 Jobs at Reid Airport, Boeing, United Airlines Finalize 737 MAX and 787 Order, Including Record Purchase for 100 Dreamliners. 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, 12 K. kevmor99. Some reports are quite specific about a recent prop strike in the engines history. (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. (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. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. "The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. (f) This amendment becomes effective on December 12, 2000. 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. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. 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. 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. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. documents in the last year, 946 Federal Register issue. on NARA's archives.gov. 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. 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). documents in the last year, by the Federal Communications Commission Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. 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. 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. Are any of the engines accessories inspected as they should be, and if so to what extent? The thought of the damage and cost involved makes all of us shudder. for better understanding how a document is structured but If you can imagine a loose rod banging around inside your engine, you know it's bad. 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. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. 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. 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. Use the PDF linked in the document sidebar for the official electronic format. The thought of the damage and cost involved makes all of us shudder. 01/17/2023, 159 Even tip damage is considered cause for teardown Unfortunately, it had experienced a prop strike. 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. 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. continental prop strike ad. We see flyweights and connecting hardware, in some designs, brutalized quite frequently by sudden stoppage. Well, for one i dont think i want to take out any of the clubs planes ever again. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. This article originally appeared in the December 2012 issue of Light Plane Maintenance. developer tools pages. 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. Basically anything that moves is subject to visual and other forms of nondestructive testing. Plus, unless you were watching the tach, how would you know? I've heard that a Continental doesn't require a tear 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. There is also a measure of anecdotal evidence in the engine accident/incident statistics that engines that have a prop strike/sudden stoppage and owners who did not follow the manufacturer recommendations such as only checking the crankshaft run-out, have a higher incidence of broken cranks or other engine failures a number of flight hours later. Prop strike on Continental. "It" 2023 Aviation Publishing Group. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Actually they are fairly consistent. 01/17/2023, 202 The President of the United States issues other types of documents, including but not limited to; memoranda, notices, determinations, letters, messages, and orders. documents in the last year, 480 are not part of the published document itself. And anyway, who needs NOTAMs? 00-29496 Filed 11-24-00; 8:45 am], updated on 4:15 PM on Tuesday, January 17, 2023, updated on 8:45 AM on Tuesday, January 17, 2023, 142 documents Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. In this Issue, Documents This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. For example, how much propeller filing constitutes "minor dressing?" In fact, the customers were sold their own crank. Dialing in the flange is worthless for this. The argument goes would you rather be paying for an in flight engine failure 100 hours from now. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. After the extent of the inspection has been determined, it is important, as with any major repairs that are accomplished on your aircraft, to find out exactly what is included in the estimate to repair your engine following a prop strike. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. AD/PROP/1 Amdt 2 (continued) Page 6 of 9 HOFFMAN (continued) Continental IO-346 engines 1000 All other Fixed Pitch Types 2000 Flottorp storage, overspeed, ground strike or aerobatic requirements refer mt-propeller Service Bulletin 1 Revision X. This 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. Sun Sep 23, 2018 8:02 pm. The $8,500 differential is not insignificant. continental prop strike ad continental prop strike ad. informational resource until the Administrative Committee of the Federal Owners should review the logs to see if the engine instead of just doing an.... 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The maximum torque applied some of these accessories TCM has informed the FAA has not with! Happy to ship this engine to you eager to have you tear down or dig into engine...
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