Posted at 11:12h in don franklin oil change somerset ky by royal You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. Register, and does not replace the official print version or the official 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. You can find the Service Bulletins for Continental Aerospace Technologies Type Certificated Gasoline Engines below. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. Well, for one i dont think i want to take out any of the clubs planes ever again. But it's getting harder Inspect all engine accessories in accordance with the manufacturer's instructions.". 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. Prop strike on Continental. This feature is not available for this document. It also does not equivocate to any degree on an engine tear down being the mandatory procedure, which is described in the bulletin. The concern, of course, is the prospect of hidden damage, which can cause, and has caused, subsequent engine failures. Effective December 12, 2000. My investigation started with my need for another engine for my Cessna 210. FIND A DEALER. corresponding official PDF file on govinfo.gov. The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. Unfortunately, it had experienced a prop strike. 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. 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.". 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 adds, "As a result, there is no real relationship today between the extent of damage of the prop and the type of inspection that has to be done to the engine. 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. Also, on prop strikes involving frontal impact, the crank can be pushed back into the engine, cracking the case at the slinger ring, and this may not be visible. 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. K. kevmor99. Until the ACFR grants it official status, the XML 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. I alluded to the potential of buying an airplane that suffered a prop strike without the required inspections being completed. 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. 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. 01/17/2023, 249 A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. documents in the last year, 830 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. are not part of the published document itself. continental prop strike ad. A. as a result of sudden stoppage. TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. But what is a prop strike and what exactly are the ramifications? 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. 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. Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. There are other things that have to be checked, including the magnetos, propeller governor, and fuel system. The $8,500 differential is not insignificant. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. Although many in the industry still like to interpret rules to their advantage, the mechanic is being faced with fewer and fewer "outs" ", Case in point 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). Never allow an insurance adjuster to dictate the inspection requirements after an incident. The bulletin reads as follows: The opinions differ with each individual, and what maintenance technicians would do personally is quite often at odds with their professional opinions. to a sudden stop. Phone: (813) 752-3711 01/17/2023, 159 If the engine is being disassembled does the estimate include testing after reassembly? A propeller strike (according to this Lycoming bulletin) is defined as follows:(It has all the same definitions found in AD 2004-10-14 that we printed in italics but has additional information): Circumstances which surround accidents are many and varied; therefore, the circumstances of the accident can not, in our opinion, be used to predict the extent of the damage to the engine or assure its future reliability. To start my investigation, I wanted the official definition of a prop strike. on 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. 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.". 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. PROPELLER STRIKE INSPECTIONS. 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 can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. Comments for inclusion in the Rules Docket must be received on or before January 26, 2001. 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. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. (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. [FR Doc. 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. publication in the future. 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. 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. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a FAA# JL4R288M | EASA.145.4115 | Toll Free: 800-282-3202 | 954-970-3200 For 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. At least thats our goal. 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 President of the United States manages the operations of the Executive branch of Government through Executive orders. For example, how much propeller filing constitutes "minor dressing?" After defining a prop strike, TCM's SB 96-11A states: "A. Propeller strike inspections. Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Inspect all engine accessories in accordance with the manufacturer's instructions." Aircraft was involved in a prop strike. documents in the last year, by the Veterans Affairs Department 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 Propeller strike inspections. on NARA's archives.gov. documents in the last year, 37 Is the engine being completely disassembled and inspected? documents in the last year, 480 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 incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. In fact, the customers were sold their own crank. documents in the last year, 16 A full overhaul will cost about $12,500 plus accessories. Click here for the Diesel Engines service bulletins. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S. 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. 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. regulatory information on FederalRegister.gov with the objective of Propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. Putting the puzzle together Docket 2000-NE-16-AD. certain lots, of steel production or forming operations. 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. 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, 117 Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. The pins are more than adequate for running loads, but they are totally inadequate when you subject them to sudden stoppage. These are the requirements as we see them. 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. AC 43.13-1B has a great deal to say about what should be done in the manner of inspections and actions, and all the statements are preceded by the word must such as following the manufacturer directives as the priority action, with emphasis on the importance of a teardown when the event meets the criteria. Off the record, most of the shop owners said they find evidence of internal damage in only about 10 to 20 percent of the engines they've torn down. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". documents in the last year, 946 Forums. Both Lycoming and Continental express concerns about prop-strikes causing damage to the rear of the crank in the vicinity of the rear radius of the oil slinger, which can be shoved back into the case rear. SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL. The OFR/GPO partnership is committed to presenting accurate and reliable 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. TCM is less equivocal. 01/17/2023, 284 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. 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. Secure the airplane and figure that it will be out of commission for a few months. and services, go to I watched the video and figured the pilot had reduced power before hitting the ditch. Issued in Burlington, Massachusetts, on November 13, 2000. Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. Comments may also be sent via the Internet using the following address: 9-ane-adcomment@faa.gov. Comments sent via the Internet must contain the docket number in the subject line. daily Federal Register on FederalRegister.gov will remain an unofficial 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. A greater tendency to crack, since the continental prop strike ad hardened materials resist bending is being disassembled does the estimate testing... 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