TCM has informed the FAA that it intends to maintain a 24 to 48 hour turn-around time for notification of the crankshaft airworthiness. (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. Highly stressed connecting rod bolts also take a beating from a prop-strike, which can cause a slight stretch. 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. At Unlimited Aero Engines we know that things happen, and happen fast.
This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. PROPELLER STRIKE INSPECTIONS. The Public Inspection page
A propeller strike is dangerous, not only because it damages the propeller but also because it can 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. TCM is less equivocal.
publication in the future. Maybe it is and maybe it isn't."
documents in the last year, 12 The President of the United States manages the operations of the Executive branch of Government through Executive orders. The argument goes would you rather be paying for an in flight engine failure 100 hours from now. (1) Do the crankshaft material inspection (crankshaft propeller flange core sample) in accordance with sections A through J of TCM MSB 00-5C, dated October 10, 2000, as follows: (i) Use the specialized tools and equipment provided by TCM as listed in section A of TCM MSB 00-5C, dated October 10, 2000. continental prop strike ad continental prop strike ad.
Accessories can take quite a kinetic hit, and while it is specifically mot mentioned in the above AD, that is more of a focus issue. The flange will break before it bends. legal research should verify their results against an official edition of 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.
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. All crankshafts that are found to be unserviceable must be replaced with a serviceable crankshaft prior to further flight. on NARA's archives.gov.
01/17/2023, 202 But it's getting harder 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. 01/17/2023, 823 the most are "prop strike." 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.
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. My investigation started with my need for another engine for my Cessna 210. 01/17/2023, 249 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 disassembly and inspection after any incident that requires removal of the propeller for repairs or if the engine physically lost any rpms during the incident. As he approached the director of maintenance he asks, Pilot: "When does a prop strike require engine tear-down and inspection? 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.".
What looks like light damage may sometimes result in something broken or highly stressed inside, while a major collision shows nothing wrong after it's been torn down."
by the Federal Energy Regulatory Commission
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. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to Continental Properties has earned a spot on the National Multifamily Housing Council's (NMHC) list of the Top 10 developers in the country. Aircraft was involved in a prop strike.
In this Issue, Documents
On April 28, 2000, the Federal Aviation Administration (FAA) issued emergency airworthiness directive (AD) 2000-08-51 that is applicable to Teledyne Continental Motors 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. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. The Public Inspection page may also Federal Register issue. This damage can result in catastrophic engine failure. ", Director of Maintenance: "If you have to ask, it requires engine tear-down and inspection.". 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.
(2) Any incident during engine operation in which the propeller impacts a solid object that causes a
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. (b) After the effective date of this AD, do not install a crankshaft with a SN that is Start Printed Page 70656listed in MSB 00-5C, dated October 10, 2000, unless core samples have been taken and TCM has approved it for return to service. I've heard that a Continental doesn't require a tear to a sudden stop. 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. Federal Register. Both Lycoming and Continental have very specific requirements for disassembly and inspection. provide legal notice to the public or judicial notice to the courts. SENSENICH WOOD PROPELLER COMPANY LOCATED IN PLANT CITY, FL.
the Federal Register. You can bet the fellow who hit the traffic cone never made a logbook entry unless the engine had to be repaired. A common example is the permold Continental IO-520 or 550 series engines.
If the engine is being disassembled does the estimate include testing after reassembly? better and aid in comparing the online edition to the print edition. However the dates that the engines and crankshafts were delivered may not coincide with their dates of manufacture.
A Rule by the Federal Aviation Administration on 11/27/2000.
Propeller strike inspections. Its not a smoking gun, but perusing the accident reports makes one wonder about such coincidences.
Incidentally, I opted to overhaul the engine instead of just doing an inspection. For example, how much propeller filing constitutes "minor dressing?" documents in the last year, 946 Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. 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. 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. Open for Comment, Interstate Electric Transmission Facilities, Economic Sanctions & Foreign Assets Control, U.S.
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. This article originally appeared in the December 2012 issue of Light Plane Maintenance. 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.
daily Federal Register on FederalRegister.gov will remain an unofficial TCM mandatory service bulletin (MSB) 005B, dated May 25, 2000, and MSB 005C, dated October 10, 2000, were issued to include the SN's of those additional suspect crankshafts. Factory New & Factory Rebuilt Gasoline Engines +1.251.436.8101 08:00 - 17:00 Gasoline Engine Overhauls & MRO +1.251.990.5080 08:00 - 17:00 Technical Support (AvGas & The thought of the damage and cost involved makes all of us shudder. 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.
These markup elements allow the user to see how the document follows the Teledyne Continental Motors has a slightly different approach, but not much different in practice. He continues, "T.C.M. Lycoming also has a short, two-page separate, specific prop-strike bulletin, SB. 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. According to DeJoris, "Hartzell requires hub replacement if any blade in the assembly is bent beyond repair limits due to impact damage.
that agencies use to create their documents. PROP STRIKE.
533 called "Recommendations Regarding Accidental Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip.".
A prop that hits so hard as to bend the crank flange is only one of several considerations. How much liability insurance do you have?
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). 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 FARs, it is up to the inspecting mechanic to determine if the engine should continue in service without total disassembly and inspection, or only the SB 475C level of inspection if a Lycoming engine falls into that category. 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): FAA Partners With Korea On Advanced Air Mobility, Guest Blog: Why Aircraft Engines Should Be Hard To Start, Southwest: The Ghost Of Jack Welch Part II, And Now, A ChatBot For All Your Aviation Questions, Best Of The Web: How The Rolls-Royce Merlin Became A World, Best Of The Web: Why Wingsuits Are Flight As Pure As, General Aviation Accident Bulletin, January 16, 2023, Top Letters And Comments, January 13, 2023, National Museum Of The U.S. Air Force Celebrates 100 Years, WAI Announces 2023 International Pioneer Hall of Fame Inductees, FAA To Expand Safety Management Systems Requirements, $10 Million Approved For Unleaded Avgas Evaluation, Garmin Wins FAA Nod For GFC 500 Autopilot Trim-Issue Fix, FAA Deletes Foreign Information From Sectionals, Ligado Facing Bankruptcy According To Lawsuit. 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The AD specifies the inspection at each engine overhaul, after a propeller strike, sudden stoppage, or whenever gear train repair is required. electronic version on GPOs govinfo.gov.
If you can imagine a loose rod banging around inside your engine, you know it's bad.
Thread starterkevmor99. On severe prop strikes, the mounts can be easily twisted and loaded in a way that it was not designed to withstand," he says. developer tools pages.
Basically anything that moves is subject to visual and other forms of nondestructive testing.
Is the engine being completely disassembled and inspected? documents in the last year, 1401 A. 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. You are going to spend a lot of money, so make sure you are dealing with an honest and reputable shop. 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 The prop had a good-size dent in it, prompting the pilot to remove the prop and send it in for repair. 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. 49 U.S.C. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample.
In many instances prop strikes will fall into the major repair category, which necessitates repair station or manufacturer repair of the prop (if needed).
All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. Recently, a transient aircraft hit a rubber traffic cone with the prop and kept going, taking off and disappearing into the western sky. 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. But what is a prop strike and what exactly are the ramifications? 533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C.
Phone: (813) 752-3711 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. 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. 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. Lycoming's new SB seems to generalize the term propeller strike and sudden stoppage to be quite inclusive. 01/17/2023, 284 Dye Penetrant test didn't show any cracks on the flange, runout is .001 which is well within tolerance. If it is determined that this emergency regulation otherwise would be significant under DOT Regulatory Policies and Procedures, a final regulatory evaluation will be prepared and placed in the Rules Docket. A propeller strike can occur at taxi speeds and during touch-and-go operations with propeller tip ground contact. 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). 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. He also said that if you have a prop strike while traveling, don't go to the first shop you see and turn the airplane over to it. 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. Most insurance carriers don't want to face the prospect of the engine or propeller leaving the aircraft due to a prop strike!".
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.
Never allow an insurance adjuster to dictate the inspection requirements after an incident. 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.
Plus, unless you were watching the tach, how would you know? This document has been published in the Federal Register. (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. Secure the airplane and figure that it will be out of commission for a few months. 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. Engine inspection requirements after prop strikes can become complicated, however, and the regulations and recommendations seem to overlap and intertwine. 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. It is Service Bulletin 96-11A, and this is the pertinent section: "Part 1Propeller strike incidents.
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. And again, Chapter 8 of AC 43.13-1B is a good place to start gathering unbiased information. Following any propeller strike, complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further flight. K. kevmor99.
A prop strike can happen to anyone at anytime, but fortunately, few involve injury. 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 establishing the XML-based Federal Register as an ACFR-sanctioned My investigation started with my need for another engine for my Cessna 210. On numerous occasions, Textron Lycoming has been consulted about recommendations on whether to continue using an aircraft engine that has been involved 01/17/2023, 159 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.".
Even tip damage is considered cause for teardown 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." A prop-strike also imposes terrific jamming forces backward on the rear of the case-where the gearing is located and easily damaged. The President of the United States communicates information on holidays, commemorations, special observances, trade, and policy through Proclamations. 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. 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. 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. [FR Doc. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. Ken Tunnel of Lycon Aircraft Engines in Visalia, California, an engine facility used by a number of owners of show airplanes, said, "There's no way you can tell if there's any damage regardless of the circumstances. One, "A sudden rpm drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred." After finding out the answer to these questions, its time to discuss with your insurance company what it will pay for and what it wont, before its a big surprise after the inspection is done. A bit of homework will go a long way towards helping you persuade your customer to do the right thing. Consider the accessories. Putting the puzzle together documents in the last year, 84 Thread starter kevmor99; Start date Sep 28, 2016; K. kevmor99 The OFR/GPO partnership is committed to presenting accurate and reliable
Studies have shown that a 100-amp alternator can impose a. Posted at 11:12h in don franklin oil change somerset ky by royal Fish and Wildlife Service Headquarters, Fora Area Brasileira FAB Comando da Aeronutica (Brazilian Air Force), Establishing the President's Advisory Council on African Diaspora Engagement in the United States, https://www.federalregister.gov/d/00-29496, MODS: Government Publishing Office metadata. Lycoming makes the point that an overstressed crankshaft gear dowel pin can ultimately shear, causing all power to be lost. Lycoming has reports of ground strikes, which have resulted in overstressed connecting rod bolts, that failed later. This repetition of headings to form internal navigation links
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. Many insurance companies will not pay for any inspection requirements unless damage from the incident is found during that inspection.
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. 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. the official SGML-based PDF version on govinfo.gov, those relying on it for on
Type of operator/engine makes a difference Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. documents in the last year, 534 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. 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. 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.
FIND A DEALER. Replace the rotobroach after the sixth core sample, or before if the rotobroach does not cut with the maximum torque applied.
Following any propeller strike complete disassembly and inspection of all rotating engine components is mandatory and must be accomplished prior to further operation. Others will pay for all costs for the inspection and for any parts needed due to the incident.
In addition, propeller strikes also include situations where an aircraft is 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. Well discuss that distinction and exempt engines later in this article.
In light of the preceding information, would you be comfortable doing that? Think of it as the equivalent of a high-speed twist drill, with great resistance to bending-it tends to snap or develop cracks from damage and fails suddenly.
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