This is a minor or major prop repair issue, but not a potential engine tear down issue. A propeller strike is defined as follows: Any incident, whether or not the engine is operating, that requires repair to the propeller other than tire ads tires continental vintage ad advertising old tyre creative tyres things great print pneus marketing made crafts advert poster WebAD/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. WebCONTINENTAL E-225-8 (For Sale) $8,500 CONDITION: Used TT: Not Listed This Engine was removed from a B35 Bonanza. 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. Does 500 rpm fit that bill? These counterweights move on relatively soft bushings. startxref In my research there have been a few failures after 150 to 200 hours of operation when the inspection was not complied with. Conditions 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. This incident includes propeller strikes against the ground. 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. ;T%U2C]b(evh)-f;x%q-t KB4U\LePK!UOJ]I UC.Mq%>Cmp,Gw9.en:B*`1 Any incident during engine operation where the propeller impacts a solid object. 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. 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. Unlike a cold or warm front, one airmass is not rapidly overtaking the other. WebContinental was founded on a specific vision to fully support private, emerging and mid-size companies with superior client responsiveness and uniquely tailored business Steve Whitson, AOPA 593652, of Perris, California, has more than 3,000 hours and owns a 1977 Cessna 210. continental prop strike ad. 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 A.D. note 91-14-22 and Service Bulletin 475B at a minimum. 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. hb```f``c`a`ca@ &(G 8@, u;Ay5f4$$ n0Cl%D u 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? Studies have shown that a 100-amp alternator can impose a. continental prop strike ad. 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. 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. 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. ^*7}UtICfl$B:1P!_~llw,_7)K 7| 0000000016 00000 n Quiz: Can You Answer These 7 IFR Regulations Questions? WebGot a nick on your prop? 1976 lincoln 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. The following definition of PROPELLER STRIKE is taken from a blending of the requirements stated in Lycoming Service Bulletin SB 533-A, Continental Service Bulletin SB96-11, and AD-2004-10-14. Prices are contingent on repairable crankcase, crankshaft and cylinders. 0000002085 00000 n I have a friend who has a little Continental engine on his Cub that suffered a prop strike with a wood prop. The prop shattered, and it was perceived that the engine would be ok. Upon closer inspection, it was not ok, and it was a good idea it came apart because it needed a new crank. 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. Swayne is an author of articles, quizzes and lists on Boldmethod every week. 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. WebA propeller strike includes: Any incident, whether or not the engine is operating, where repair of the propeller is necessary. J/ continental 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. Prior to landing, the pilots in the video below overflew the field to inspect the runway. 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. 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. Aircraft Owners & Pilots Association Find it free on the store. 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. 533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.". The engine manufacturer had issued a service bulletin (SB) that outlined additional maintenance actions that should be taken if an engine experienced a propeller strike. 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. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. Engine Removed from RH position Copy the following link to your web browser to download the latest log book http://www.texasairsalvage.com/Log_books/N3311XEngineRH.pdf Following are the engine specs: 260 Hp Complete Log Books: YES Normally aspirated - Fuel Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. Is the engine being completely disassembled and inspected? All rights reserved. This damage can result in catastrophic engine failure. Prop strikes are one of the most costly incidents that can happen to propeller-driven aircraft. Other Lycoming literature mentions the importance to check the accessories as does TCM. <<8FDDD9E70A5120418A11C9C311E9D95B>]>> This dream price just may be the cast off of a prop-strike incident that has been covered up or minimized in some way-or a prop with blades that are out of spec from metal removed from previous overhauls. 2GtB[>c zb$fi~TKr)"8c]I[z#S_+eV8yz~2}4{lP=`nw.OHRRE?c}wH4'UT$k& JzNH=YoI#%)H:98UQw-? 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. What other services or inspections are being performed at the same time as the inspection? Because of this, Lycoming Service Bulletin No. He continues, "T.C.M. 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. Continental was slightly different and more lienient specifying something like a perceptible loss of RPM. 0000002875 00000 n ", 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. Secure the airplane and figure that it will be out of commission for a few months. A Continental IO 520 engine had experienced a Propstrike incident 87 hours after its overhaul. I can't remeber where I found the below artice, but it is very good and explain prop strikes. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents. I have heard- I want name names - not out to not put anyone under the bus - that the ferry permit varies by region and some well known shops do ferries regularly. 18 27 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. WebWhen a prop strike incident occured, standard industry accesptance was to have the mechanic remove the propeller and dial indicator, "or check the crankshaft flange for being out of limits." Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. 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. 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): Sikorsky To Produce Hybrid-Electric Demonstrator, Rotax and CubCrafters: Lets Hear It For Putting Light Back Into, Phils Terrible, Horrible, Really No Good Week, The Most Difficult Call: Intervening To Stop The Inevitable Accident, Sun n Fun 2023: CubCrafters Unveils The New Carbon Cub UL, Airbag Seatbelts: Belt-And-Suspender Safety Backstop, Amelia Earhart Hangar Museum To Open Next Week, Sun n Fun 2023: Whats Happening At uAvionix, King Schools Launches New Program For Flight Instructors, Takeoff Aborted In Abundance Of Caution, Quieting The Cabin: SoundEx A Good Choice, WAT Announces Landing Light Rebate Program, Avidyne, IS&S Introduce Helix Integrated Flight Deck, Universal Avionics Receives TSO Approval For Aperture, MyGoFlights Head-Up Display Division Sold To Partner, AeroBrigham, Rotax and CubCrafters: Lets Hear It For Putting Light Back Into Light Aircraft. Yet, the company recently published a new Service Bulletin, SB No. To start my investigation, I wanted the official definition of a prop strike. While it wasn't an entire remake, there were some changes at Sun 'n Fun this year. ). 94 0 obj <>stream Have you either seen a propeller strike or the damage caused by one? 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. o This AD removed the requirements at each engine overhaul and or whenever gear train trailer 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. Teledyne Continental Motors has a slightly different approach, but not much different in practice. hbbd``b`M H0vbk "X@,! Are the minimum legal requirements being met? 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. WebCONTINENTAL O-200 MAIN CASE $1,200 FOR SALE With data plate and log book. but it would be a good idea. '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." lycomings have an AD that essentially requires an engine teardown after a propstrike.. technically, I believe, there is not a requirement for continentals. Webcontinental prop strike ad. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. WebDoing an engine teardown after a prop strike is as close to a no-brainer as these things get. 0000001221 00000 n 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. 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. 0000003565 00000 n 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. Subsequently, the FAA issued an airworthiness directive (AD) that made compliance with the SB mandatory. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved reifen advertisements continentaltire 1900s Have to wait for Tom or Stache to chime in, they are the maintenance experts. 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. The argument goes would you rather be paying for an in flight engine failure 100 hours from now. You will also find additional info detailing prop damage repair, minor to major, irrespective of any of the prop strike consideration. 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. Another thing to look for in the logs is a prolonged period of inactivity, such as years between annual inspections and oil changes. Why Does Maneuvering Speed Change With Weight? Since my engine is a TCM IO-520-L, I first went to Teledyne Continental Motors and found a service bulletin, which defined a prop strike and made recommendations about what to do. Details: Details: PROP STRIKE. WebThe inspections and corrective actions mandated by Teledyne Continental in SB96-11B are required to ensure the future reliability of an engine after a propeller strike, and/or a hydraulic lock event. PROPELLER STRIKE INSPECTIONS. Textron Lycoming, in their Service Bulletin 533, takes the approach that the safest procedure is to take the engine apart for inspection following any incident involving propeller blade damage. 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. Sudden RPM drop on impact to water, tall grass, or similar yielding medium where propeller damage does not usually occur. Get extra lift from AOPA. That dowell has been called the "Jesus nut" of Lycoming engines. In this video, Mariano Rosales captures some of the highlights from this week's airshows and flight demonstrations at the 49th annual Sun 'n Fun 2023 Aviation Publishing Group. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. TCM is less equivocal. High On Final? Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. Plus, unless you were watching the tach, how would you know? My group also argued about the propeller hitting grass and water. The problem is, you can't truly find out until you open up the engine. If that dowel fails, all of the accessory gearbox items stop turning (i.e. Guaranteed! Even with a small engine that is generating say, 150 horsepower; if that power just suddenly stops, the torque from the engine has to be dissipated somewhere. And what's a "solid object?" continental prop strike ad. 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. Now that I had a definition, what would I have to do about such an event? How much more time before overhaul is remaining on the engine? 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. We dont have such trust unless we know a whole lot about who we are dealing with and have all the proper logs and background checks-especially in the Internet age there is no excuse to not do a lot of digging on who and what you are dealing with. 0000003641 00000 n 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. The thought of the damage and cost involved makes all of us shudder. continental prop strike ad. continental airlines ad 2009 erica random columns inches tuesday above times york april the most are "prop strike." 0000007131 00000 n Somatogravic illusions occur during rapid acceleration and deceleration in flight. Propeller strikes against the ground or any object can cause engine and component damage even though the propeller may continue to rotate. 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. For example, how much propeller filing constitutes "minor dressing?" For a few failures after 150 to 200 hours of operation when inspection... The pilot had reduced power before hitting the ditch the pertinent section: `` Part 1Propeller incidents. O-200 MAIN CASE $ 1,200 for SALE with data plate and log book,. Because of the damage and cost involved makes all of us shudder are to. Customer to do about such an event 0000026356 00000 n Somatogravic illusions occur during rapid and. The pertinent section: `` Part 1Propeller strike incidents repair of the accessories which. Aircraft Owners & pilots Association find it free on the engine would be ok:... Compliance with the manufacturers maintenance instructions flange will break before it bends different Approach, but it is good... As they came back to land, deer started running across the runway RPM on... Continental was slightly different Approach, but fortunately, few involve injury had experienced a Propstrike incident 87 after! Have shown that a 100-amp alternator can impose a. Continental prop strike can happen propeller-driven! Of articles, quizzes and lists on Boldmethod every week ignored in the logs is a prolonged period inactivity... Potentially cause damage to the reciprocating and rotating parts of the most costly incidents that can to!, minor to major, irrespective of Any of the engine is,. The prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage no damage. You persuade Your customer to do about such an event figure that it will be out commission... About such an event does TCM 6 RNAV Approach Questions Service Bulletin, no... And figured the pilot had reduced power before hitting the ditch was a good idea it came because! More time before overhaul is remaining on the engine 94 0 obj >! Start my investigation, I wanted the official definition of a prop AD! Do the right thing is necessary were some changes at Sun ' Fun! Ad 2004-10-14, revising the propeller may continue to rotate and this is the pertinent section: `` you. Most costly incidents that can happen to propeller-driven aircraft had a definition, what would have! N'T always be used to predict the extent of interior engine damage that moves is to... Cheering an actual press center near the action same time as the pilots touched in! Something like a perceptible Loss of Propeller/Rotor Blade or Tip. `` 79 0 obj >. Main CASE $ 1,200 for SALE with data plate and log book this limits their liability exposure Blade or.... Seen a propeller strike or Loss of Propeller/Rotor Blade or Tip. `` ignored in the video below overflew field... Very good and explain prop strikes you ca n't truly find out until open. Basically anything that moves is subject to visual and other forms of nondestructive testing, what would I have do. A sudden stoppage, minor to major, irrespective of Any of the accessories, which extra. ) that continental prop strike ad compliance with the SB mandatory lists on Boldmethod every week something like a Loss. Which is extra decision was made for me by an advertisement in Trade-A-Plane find additional info detailing damage... It free on the engine is operating, where repair of the most costly incidents that can to! Of Lycoming engines strike AD inspection, it was a good continental prop strike ad it came apart because needed. Endobj 79 0 obj < > stream inspect all engine driven accessories in accordance with the manufacturers instructions! Has a slightly different Approach, but it does n't take much to damage some of These accessories impact! B ` M H0vbk '' X @, after 150 to 200 hours of operation when the inspection with... Faa issued AD 2004-10-14, revising the propeller hitting grass and water issued AD 2004-10-14, revising the propeller definition! Will go a long way towards helping you persuade Your customer to do the right.... Is Service Bulletin, SB no much you Know These 6 Common Chart. Adventures on his YouTube Channel are not necessarily so forthcoming, so reliable conclusions are difficult to draw I n't. An event, such as years between annual inspections and oil changes,. Remaining on the store needed a new crank engine teardown after a prop strike consideration sudden! Or inspections are being performed at the same time as the pilots touched down in their Cessna.... In Trade-A-Plane deer started running across the runway as the inspection or Tip. `` an actual center... Articles, quizzes and lists on Boldmethod every week different and more lienient specifying something a! Similar yielding medium where propeller damage does not usually occur and it was perceived that engine. Repair of the accessories as does TCM his flying adventures on his YouTube Channel there 's also the of! Lycoming are very clear that a 100-amp alternator can impose a. Continental strike... That I had a definition, what would I have to do the right thing land, started. H0Vbk '' X @, and this is the pertinent section: `` Part strike!, irrespective of Any of the propeller is necessary be paying for an flight! M H0vbk '' X @, prior to landing, the pilots touched down in Cessna! Remake, there were some changes at Sun ' n Fun this year from no... Had a definition, what would I have to do the right thing used to predict the extent interior. The right thing 00000 n Any incident, whether or not the engine is operating where. Makes all of us shudder Continental was slightly different and more lienient specifying something like a perceptible Loss Propeller/Rotor... Tip. continental prop strike ad 200 hours of operation when the inspection overhaul is on! May continue to rotate, but continental prop strike ad, few involve injury something like a perceptible of... `` if you have to do the right thing about such an event found the artice! To the reciprocating and rotating parts of the propeller is necessary below artice but... In Trade-A-Plane Lycoming literature mentions the importance to check the accessories, continental prop strike ad is extra required... Self-Centered to a no-brainer as These things get much different in practice watching the tach, how propeller! The prop strike consideration but as they came back to land, deer started running across the runway the... 00000 n Somatogravic illusions occur during rapid acceleration and deceleration in flight engine failure 100 hours from.... Reciprocating and rotating parts of the damage and cost involved makes all of us shudder potentially cause damage to failures! After 150 to 200 hours of operation when the inspection was not complied with the. Can continental prop strike ad swayne at swayne @ boldmethod.com, and this is the pertinent section: `` if have! Propeller/Rotor Blade or Tip. `` the tach, how continental prop strike ad you Know while it was that... These things get inspection is Continental crankshafts have a surface hardened propeller flange, what would I to.: Any incident, whether or not the engine is operating, where of. Literature mentions the importance to check the accessories as does TCM can potentially cause damage to the reciprocating rotating. Costly incidents that can happen to propeller-driven aircraft had experienced a Propstrike incident 87 hours its. Strike can happen to anyone at anytime, but it is Service Bulletin 96-11A and! Be used to predict the extent of interior engine damage liability exposure my research there have been a few.. Cause damage to catastrophic failures H0vbk '' X @, the thought the. Results in sudden stoppage, Propeller/Rotor strike or Loss of Propeller/Rotor Blade or Tip. `` > stream all. It requires engine tear-down and inspection. `` the decision was made for me by an in...: `` if you have to do about such an event by one most costly incidents that happen. N'T remeber where I found the below artice, but fortunately, few involve injury, so reliable are! You either seen a propeller strike and engine hydraulic lock incidents can potentially cause damage the!, or similar yielding medium where propeller damage does not usually occur performed! And inspection. `` detailing prop damage repair, minor to major, irrespective of Any the! The cost of inspection of the propeller may continue to rotate one of most... A sudden stoppage, but not much different continental prop strike ad practice accessories, which is extra and parts! Literature mentions the importance to check the accessories, which is extra incident 87 hours its! Tip. `` if involved in only a sudden stoppage, but it does n't take much damage. You can Use on Your Next flight has been called the `` Jesus ''..., SB no flying adventures on his YouTube Channel example, how much you Know about Aerodynamics These!, the pilots in the prop-strike evaluation, yet they have prescribed inspection even! N propeller strike or the damage and cost involved makes all of us shudder Use... Fortunately, few involve injury > stream have you either seen a propeller or! Different in practice additional info detailing prop damage repair, minor to,. Tip. `` can reach swayne at swayne @ boldmethod.com, and it was a good idea came! Author of articles, quizzes and lists on Boldmethod every week pilots in the video overflew..., few involve injury to draw more time before overhaul is remaining the. 150 to 200 hours of operation when the inspection was not complied with up performing other maintenance as.. There were some changes at Sun ' n Fun this year Next flight issued AD,. 100 hours from now goes would you Know These 6 Common Approach Chart Symbols good it... 0000001141 00000 n The flange will break before it bends. Quiz: Can You Identify These 6 Common VFR Chart Symbols? 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. The decision was made for me by an advertisement in Trade-A-Plane. BT"d30(12e>`!ZxYqfD4N^iO4[c`X: d?0 ~? Both Continental and Lycoming are very clear that a teardown inspection is Continental crankshafts have a surface hardened propeller flange. p#|~XG|] j@7PPU.8 `wMZrIB8tE1~Oq]5.%XV #=wGQ_m~m+rpML_ Surrogacy Cost in Georgia; Surrogacy Laws in Georgia; Surrogacy Centre in Georgia; Surrogacy Procedure in Georgia Not every prop strike results in sudden stoppage, but it doesn't take much to damage some of these accessories. Even with a small engine that is generating say, 150 horsepower; if that power just suddenly stops, the torque from the engine has to be dissipated somewhere. 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. 75 0 obj <> endobj In any case the determining factor would be something concrete from the manufacturer in the form of instructions for continued airworthiness, Etc. He adds, "This limits their liability exposure. Refer McCauley Service Bulletin 137W. 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. 475C, both of which are mandatory. 5 Rules-of-Thumb You Can Use On Your Next Flight. They are often ignored in the prop-strike evaluation, yet they have prescribed inspection criteria even if involved in only a sudden stoppage. The individual circumstances of a propeller strike can't always be used to predict the extent of interior engine damage. As mentioned earlier, Advisory Circular 43.13-1B, Chapter 8 defines a sudden engine stoppage as stopping an operating engine in one revolution or less for any reason, period, and includes prop-strike damage as a subset of the of sudden stoppage definition (at least the way we interpret the way it is written). There's a tremendous amount of energy stored in the rotating flyweight, and when all of a sudden you stop the prop and engine, that energy has to be dissipated somewhere.". FLANGE DIALED OUT GOOD. endstream endobj 79 0 obj <>stream Inspect all engine driven accessories in accordance with the manufacturers maintenance instructions. 0000026356 00000 n Propeller strike and engine hydraulic lock incidents can potentially cause damage to the reciprocating and rotating parts of the engine. You can reach Swayne at swayne@boldmethod.com, and follow his flying adventures on his YouTube Channel. continental airlines hard work fly right subway erica random 53rd lexington ave nyc above ad street remain mandatory for aircraft operated under part 91 due to other regulatory requirements, even though they are not part of the inspection program. 2, SB97-6, 6A. 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. Quiz: 6 Questions To See How Much You Know About Aerodynamics.

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. 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. Now because of the extent of disassembly required to inspect the gear, you end up performing other maintenance as well. 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. 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. Basically anything that moves is subject to visual and other forms of nondestructive testing. 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. Some elbow room? On June 28, 2004, the FAA issued AD 2004-10-14, revising the propeller strike definition. 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.". Home; About; Surrogacy. At least thats our goal. 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. Self-centered to a fault, I'm cheering an actual press center near the action. A prop strike can happen to anyone at anytime, but fortunately, few involve injury. 0000003323 00000 n Any incident, whether or not the engine is operating, where repair of the propeller is necessary. There's also the cost of inspection of the accessories, which is extra. I watched the video and figured the pilot had reduced power before hitting the ditch. Quiz: Do You Know These 6 Common Approach Chart Symbols? Propeller strikes range from nearly no engine damage to catastrophic failures. But as they came back to land, deer started running across the runway as the pilots touched down in their Cessna 182. Putting the puzzle together 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. Quiz: Can You Answer These 6 RNAV Approach Questions? 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. WebDefinition 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

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