DeJoris explains, "Take for example the prop governor drive the rotating mass in the prop governor, mainly the flyweight assembly can really be problem if suddenly stopped. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection. 18 27
The individual circumstances of a propeller strike can't always be used to predict the extent of interior engine damage. 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. ^*7}UtICfl$B:1P!_~llw,_7)K 7|
0000002831 00000 n
z}YSv A0Lm1wE@ O+>T7])o,dZF|M*ZmWdQsj ~cf#0ZDcVqvHT0 @q9lz;0P90]lfzy5j@ 's, it is up to the inspecting technician to determine if the engine should continue in service without total disassembly and inspection. 
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. The intent of these inspections is to determine the level of damage so Airworthiness Directives (AD), etc.) shaker heights country club membership cost Uncategorized. Yet, the company recently published a new Service Bulletin, SB No. 475C, both of which are mandatory. He graduated as an aviation major from the University of North Dakota in 2018, holds a PIC Type Rating for Cessna Citation Jets (CE-525), is a former pilot for Mokulele Airlines, and flew Embraer 145s at the beginning of his airline career. 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 are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. Quiz: Do You Know What These 5 ATC Phrases Mean? Adverse yaw is the tendency of an airplane to yaw in the opposite direction of the turn. continental prop strike ad. This illusion usually happens when there's limited exterior visibility, and you react to body senses over actual flight instrument readings. 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. 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. Unfortunately, it had experienced a prop strike. 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. He adds, "This limits their liability exposure. Poor aircraft control during gusty crosswinds, or a porpoised landing, are some of the most common causes of prop strikes. Webjennifer borrasso kdka bio Navigation. Any incident during engine operation where the propeller impacts a solid object. This AD removes the requirement to perform inspections at overhaul and during repair of the gear train, because Lycoming has incorporated those procedures from their Service Bulletin into their Overhaul Manual.This AD results from a change to the definition of a propeller strike or sudden stoppage. Compliance with this service bulletin is mandatory per AD 91-14-22. -:`[Q It pretty much echoes the TCM service bulletin but adds two other situations. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); WORLD'S PREMIER INDEPENDENT AVIATION NEWS RESOURCE. 
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Any incident during engine operation where the 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. All rights reserved. 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. 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. How about 50 rpm? 0000008269 00000 n
"The result is that those flyweights that are hanging on by 1/8-inch pins can easily bend, twist, or damage those pins. Basically anything that moves is subject to visual and other forms of nondestructive testing. Webcontinental prop strike ad. I8oU'7.fsrpw7{X@7Y~z9qK?gI6N,kXPxmLul2g`X( %8p3cJac(gkD3kZoV9DnCf|KK[r>-fw|/BN4HqJ}b6Z`0|f{! 75 0 obj
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As for dialing the flange, he said TCM nitrides the crank so checking the run-out of the flange is a waste of time. Prior to any ground operation of the engine assure that the propeller flange and the crankshaft flange area are free of any crack indications in addition to the engine component inspection. Long story shortnot good. Tell us in the comments below. i}g March 26, 2023; loopy doopy rooftop bar reservations; bus from port elgin to london ontario; what is a f1 performance coach; atlanta empire football Home. 0000015761 00000 n
I[ The flange will break before it bends. 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. These are the requirements as we see them. If you can imagine a loose rod banging around inside your engine, you know it's bad. Others will pay for all costs for the inspection and for any parts needed due to the incident. Somatogravic illusions occur during rapid acceleration and deceleration in flight. Real-Time Video Ad Creative Assessment; Get a Demo Today. Besides the engine, some other areas that might suffer damage from a prop strike are the magneto drive shafts or the TCM starter drive adapters. Sudden stoppage causes Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. %PDF-1.4
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The engine for sale was the model I needed, with about 1,000 hours since a factory overhaul. WebWith Norvics best O-200 warranty in the business, your chances of reaching the next scheduled TBO with the lowest cost of ownership are the best available.
Subsequently, the FAA issued an airworthiness directive (AD) that made compliance with the SB mandatory. 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. Some reports are quite specific about a recent prop strike in the engines history. The only pertinent F.A.A. 0000002875 00000 n
One, "A sudden rpm drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred." 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. WebA propeller strike includes: Any incident, whether or not the engine is operating, where repair of the propeller is necessary. '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." Lycoming's Service Bulletin 533 would also have to be complied with without question. endstream
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SERVICE BULLETIN. On Lycoming engines, which are not nitrided, the flange can be bent. 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. 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. They all agreed that if it were their aircraft, they would think long and hard about doing a teardown and inspection. Propeller strike inspections. Dialing in the flange is worthless for this. by A.D. note 91-14-22, if and only if, the engine has experienced a sudden engine stoppage not a propeller strike.
It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. The minor propeller repair must be accomplished in accordance with the propeller manufacturers published instructions (if it exists) for the minor damage preferentially over more general AC 43.13-1B with the exceptions we noted earlier). On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne endstream
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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. 18 0 obj <>
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Its all mandated by AD's. Figure 1. There's also the cost of inspection of the accessories, which is extra. Contact Tony Bogart - WESTERN SKYWAYS INC., - located Montrose, CO 81401 United States Telephone: 1-800-575-9929 Fax: 970-249-4155 Posted April 4, 2023 A full overhaul will cost about $12,500 plus accessories. WebTo: "Tech@ercoupe.groups.io"
To start my investigation, I wanted the official definition of a prop strike. We spoke with the pilots, and they said there was a 3" dent aft of the cowling, additional dents behind the door, and the deer impacted the prop, requiring an engine tear-down. "You naturally think of the crankshaft and things that are directly connected to the engine, but you don't think of other accessories. But if there's 1,000 hours or more left on the engine, you're probably better off with just an inspection. Is it hitting a rock or other loose object with a prop blade while operating on a runway or taxiway? Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Is it a sudden engine stoppage regardless of the cause? In addition, propeller strikes also include situations where an aircraft is stationary and a landing gear collapse occurs causing one or more blades to be bent, or where a hangar door (or other object) hits the propeller blade. WebAFFECTED: All Teledyne Continental Motors (TCM) engine models. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. 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. 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. 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. They easily crack without bending so the dial indicator does not tell all. This incident includes propeller strikes against the ground. Although the propeller can continue to turn, damage to the engine can occur, possibly with progression to engine failure Sudden RPM drop on impact to water, tall grass, or similar yielding medium where propeller damage does not usually occur 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 F.A.R. 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. 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. Save Big $$$ from the overpriced OEM options. Quiz: What Should You Do When ATC Says '______'? A prop that hits so hard as to bend the crank flange is only one of several considerations. 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. 0000007261 00000 n The other thing to consider is all of the accessories on the engine or parts of the engine that are spinning at high speeds that could come Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. 88 0 obj <>/Filter/FlateDecode/ID[]/Index[75 20]/Info 74 0 R/Length 71/Prev 16864/Root 76 0 R/Size 95/Type/XRef/W[1 2 1]>>stream The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. Are the minimum legal requirements being met? A bit of homework will go a long way towards helping you persuade your customer to do the right thing. 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. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. R 0! A dry line is a boundary between moist and dry air masses. Details: Details: PROP STRIKE. I wouldn't skimp on safety, but if I could save a few dollars on cosmetics, I sure would. J/ lycomings have an AD that essentially requires an engine teardown after a propstrike.. technically, I believe, there is not a requirement for continentals. Still others will only pay for the labor to do the job and will not pay for any parts. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. This is a minor or major prop repair issue, but not a potential engine tear down issue. Quiz: Do You Know These 6 Common Approach Chart Symbols? Prior to landing, the pilots in the video below overflew the field to inspect the runway.
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