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. This damage can result in catastrophic engine failure. Unfortunately, it had experienced a prop strike. Still others will only pay for the labor to do the job and will not pay for any parts. "It" 2023 Aviation Publishing Group. The OFR/GPO partnership is committed to presenting accurate and reliable A common example is the permold Continental IO-520 or 550 series engines. In fact, the customers were sold their own crank. 2023 Endeavor Business Media, LLC. 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. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. I bought the engine and started my quest to determine what I absolutely had to do to get the airplane airworthy. Disregard the letter R.. 01/17/2023, 159 That AD requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. 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. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. How much grass and how deep should the water be, and how sudden is "sudden," and what constitutes an rpm drop? 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 If the engine is being disassembled does the estimate include testing after reassembly? Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. Kiss the old days goodbye. regulatory information on FederalRegister.gov with the objective of In short, all accessories become suspect to damage under either a prop strike or sudden stoppage incident. 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. the most are "prop 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." The President of the United States manages the operations of the Executive branch of Government through Executive orders. that agencies use to create their documents. There may be other additional requirements mandated by insurance policies or engine manufacturer and/or overhauler warranty. AOPA Members DO more LEARN more SAVE more - Get MORE out of being a pilot -. PROP STRIKE. Just a few short months ago, Textron Lycoming's Service Letter L-163C recommended taking the engine apart for inspection following any incident involving propeller blade damage. documents in the last year, 534 The documents posted on this site are XML renditions of published Federal 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. (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). Docket 2000-NE-16-AD. 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. on You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. on O-435, and TIO-541 series engines being exempt. documents in the last year, 973 So carefully consider all factors related to propeller strikes. These can be useful TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. establishing the XML-based Federal Register as an ACFR-sanctioned 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. Prop strike. These two words are guaranteed to make any pilot wince. Click here for the Diesel Engines service bulletins. 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. 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. to a sudden stop. The specification material evaluation techniques have been improved to preclude a reoccurrence of this condition. SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. This prototype edition of the has no substantive legal effect. 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. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. documents in the last year, 480 The investigation revealed that the crankshafts failed due to subsurface defects in the number one crankshaft connecting rod journal. 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. 552(a) and 1 CFR part 51. So my question was, should I overhaul the present engine or look for one with good logs? I've heard that a Continental doesn't require a tear down and inspection as a Lycoming does, but looking at Continental's Service Bulletin SB96-11B it looks Home. The degree of difficulty of this action will bevaried, depending on the installation and location of accessories, turbos, intercoolers, etc. 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a Start dateSep 28, 2016. A propeller strike is dangerous, not only because it damages the propeller but also because it can These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. Until the ACFR grants it official status, the XML 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. The $8,500 differential is not insignificant. We have personally seen an instance where a plane lost the entire prop in flight following a so called minor prior strike of hitting a runway light while taxing, but the crank on the IO-520 was only checked for run-out and prop repaired (and this was a Part 135 operated plane). MSB 005C lists additional serial numbers (SN's) of affected engines and suspect crankshafts that were manufactured between April 1, 1998, and March 31, 2000, inclusive. TCM is less equivocal. These tools are designed to help you understand the official document A propeller strike can occur at taxi speeds and during touch-and-go operations with propeller tip ground contact. The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. Now I had to determine the consequences. documents in the last year, 41 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. Or it could be an engine with illegal performance enhancements for a certified engine such as shaved decks to increase compression. Dialing in the flange is worthless for this. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. documents in the last year, 117 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). Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. 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. Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. 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. Note 10: 2400 hours TBO may apply. It is not an official legal edition of the Federal Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. 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.". Prop strike on Continental. The decision was made for me by an advertisement in Trade-A-Plane. 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. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Got a nick on your prop? 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. Another problem area is in engines with crank counterweights, a very common design. We get e-mail from readers who have had what they often prefer to call prop incidents as to possibly avoid the term prop-strike, and its frequent need for a recommended or mandatory engine tear down. (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. 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. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. 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. Lycoming's Service Bulletin 475B requires that in the event that the engine has experienced a propeller strike, inspection and possible rework of the accessory gear train as well as the rear of the engine's crankshaft is required. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. These counterweights move on relatively soft bushings. The actions are required to be accomplished in accordance with the service bulletin described previously. Inspect all engine accessories in accordance with the manufacturer's instructions.". The bulletin reads as follows: If you can imagine a loose rod banging around inside your engine, you know it's bad. This table of contents is a navigational tool, processed from the documents in the last year, 37 A. How much liability insurance do you have? While every effort has been made to ensure that The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. Submit comments in triplicate to the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. The thought of the damage and cost involved makes all of us shudder. My group also argued about the propeller hitting grass and water. 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.". 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. 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 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. 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? 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 A prop that hits so hard as to bend the crank flange is only one of several considerations. Maybe it is and maybe it isn't." The accident was recorded on video and available on the Internet. what would martial law in russia mean phoebe arnstein wedding joey michelle knight son picture brown surname jamaica. One, "A sudden rpm drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred." Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. This occurred during several discrete periods, i.e. 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. 2000-NE-16-AD, 12 New England Executive Park, Burlington, MA 01803-5299. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. 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. 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. Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. On November 24, 1999, the FAA was notified of a crankshaft failure on a TCM engine. 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. All rights reserved. Federal Register. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. At Unlimited Aero Engines we know that things happen, and happen fast. 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. Service bulletins are one thing, but the real information comes from the people working in the field. 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. Panagotacos recently paid $66 for the list of a 1956 Cessna 182, which is in his shop. 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. 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. This amendment supersedes emergency airworthiness directive (AD) 2000-08-51. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. certain lots, of steel production or forming operations. Everyone was happy and the prices were right. PROPELLER STRIKE INSPECTIONS. This article originally appeared in the December 2012 issue of Light Plane Maintenance. developer tools pages. Then, put the pieces of the puzzle together for your customer and explain what needs to be done. 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. 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. 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. ", In addition to regulatory changes and manufacturer recommendations, insurance companies are also playing a major role in determining what you do to your engine and prop. If you've attended AirVenture or any of the other major airshows, you've heard it. 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 full overhaul will cost about $12,500 plus accessories. 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. Does 500 rpm fit that bill? Emergency AD 2000-08-51 was sent to all known U.S. owners and operators of Teledyne Continental Motors (TCM) IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550, and TSIOL-550 series reciprocating engines by individual letters. At what point after a prop strike do you need an engine teardown and inspection? Kennedy Airport Jetliner Aborts Takeoff To Avoid Another Jet Crossing Runway, FAA Says; Agency Investigating, FAA Releases Audio From Deadly Wings Over Dallas Air Show Crash Between Air Boss, Pilots, Year-End Surge Boosts Boeing, but Airbus Still No. 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. ", Case in point So, when it comes time for that prop strike/sudden. Federal Register issue. Information about this document as published in the Federal Register. 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. Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 PROPELLER STRIKE INSPECTIONS. What other services or inspections are being performed at the same time as the inspection? 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. 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. documents in the last year, by the Veterans Affairs Department 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. daily Federal Register on FederalRegister.gov will remain an unofficial All of the fractures have been grouped around certain manufacturing dates between April 1, 1998, and March 31, 2000, inclusive. New Documents I won't list them all here, but some of the more expensive ones are: hydraulic valve lifters, connecting rod bearings, the crankshaft's main and thrust bearings, all needle, ball, and roller bearings, exhaust valves, valve springs, piston pins, pistons, crankcase through bolts, all the hardware, seals, gaskets, O-rings, and lots of other small stuff. December 2012 issue of Light Plane Maintenance LOCATED in PLANT CITY, FL.! Quest to determine what I absolutely had to do the job and will not pay for any requirements! Explain what needs to be done is mandatory and must be replaced when the engine and started my quest determine... Accurate and reliable a common example is the permold Continental IO-520 or 550 series being., that failed later described previously bulletin described previously after defining a prop strike do you an. Propeller Directorate, Aircraft Certification service but fortunately, few involve injury 1956 Cessna,. 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