Register documents. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. Factual information that supports the commenter's ideas and suggestions is extremely helpful in evaluating the effectiveness of the AD action and determining whether additional rulemaking action would be needed. 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. This repetition of headings to form internal navigation links These markup elements allow the user to see how the document follows the Nitride hardened cranks have a greater tendency to crack, since the nitride hardened materials resist bending. The President of the United States manages the operations of the Executive branch of Government through Executive orders. 01/17/2023, 284 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. New posts Search forums. This is not restricted to propeller strikes againstthe ground. This prototype edition of the can easily create significant internal stresses, such as stress cracks and loosened attaching hardware. 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. 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 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. This document has been published in the Federal Register. documents in the last year, 12 Thread starterkevmor99. 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. daily Federal Register on FederalRegister.gov will remain an unofficial and services, go to Are there any hidden costs? But what is a prop strike and what exactly are the ramifications? ", Case in point Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. 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. 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. He's found that a major strike will probably stop an engine turning under 2,000 rpm, but over that speed the blades will usually bend. A propeller strike is: (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. 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. 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. Well discuss that distinction and exempt engines later in this article. Does 500 rpm fit that bill? 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. At least thats our goal. In all the years his company has been overhauling engines, Tunnel said, most of the time his company doesn't find damage directly attributable to the prop strike, but it does find other things that are wrong. More than the prop and crankshaft documents in the last year, 84 And anyway, who needs NOTAMs? Our designation as a Cessna Service Center and authorization as a parts and engine distributor for both Lycoming and Continental Their decision would involve the specific engine involved, the severity of the prop damage, the cost, the time on the engine, whether the prop was stopped or appreciably slowed, who was flying at the time, what else is going on in the shop, and maybe the time of year and their mother's maiden name. The bulletin reads as follows: But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. 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. Refer McCauley Service Bulletin 137W. provide legal notice to the public or judicial notice to the courts. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. continental prop strike ad continental prop strike ad. I took the other SR20 this time and it was also broken, to the point where it shouldn't have been flown. SUMMARY: The FAA is adopting a new airworthiness directive (AD) that supersedes an existing AD, for Lycoming Engines (formerly Textron Lycoming), direct-drive 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. 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. 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. to a sudden stop. Unfortunately, it had experienced a prop strike. documents in the last year, 1401 Information about this document as published in the Federal Register. 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. TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. 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. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied. Panagotacos recently paid $66 for the list of a 1956 Cessna 182, which is in his shop. (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). 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. It still could end up at a prop repair station if inspection deems it a prop major repair requirement depending on manufacturer inspection criteria of the prop. TCM is less equivocal. You will note TCM does not get into the concept of sudden stoppages possibly being handled differently as Lycoming does. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Accordingly, the FAA has not consulted with state authorities prior to publication of this proposed rule. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. These can be useful 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. If you can imagine a loose rod banging around inside your engine, you know it's bad. However the dates that the engines and crankshafts were delivered may not coincide with their dates of manufacture. In fact, the customers were sold their own crank. 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.". Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. 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. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. ", 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. This Airworthiness Directive (AD) is applicable to Teledyne Continental Motors (TCM) IO-360, TSIO-360, LTSIO-360, O-470, IO-470, TSIO-470, IO-520, TSIO-520, LTSIO-520, IO-550, TSIO-550 and TSIOL-550 series reciprocating engines that were assembled, rebuilt, or overhauled using a crankshaft that was manufactured between April 1, 1998, and March 31, 2000, listed by engine and crankshaft serial number (SN) in TCM Mandatory Service Bulletin (MSB) 00-5C, dated October 10, 2000. 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. As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. (2) Any incident during engine operation in which the propeller impacts a solid object that causes a Talking about whether to have the engine overhauled or just inspected, Tunnel said it can be penciled out. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. Note 10: 2400 hours TBO may apply. Consider the accessories. While every effort has been made to ensure that continental prop strike ad. Dialing in the flange is worthless for this. This amendment is prompted by reports of crankshaft failures, and by the addition of additional crankshaft serial numbers (SN) that have been added to the suspect population. 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. The authority citation for part 39 continues to read as follows: Authority: (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. 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. has no substantive legal effect. Airmark Overhaul, Inc. 6001 NW 29th Avenue Fort Lauderdale, FL 33309. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. 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. 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. 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. 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