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. Unfortunately, it had experienced a prop strike. CONTINENTAL TSIO-520-J $18,995 FOR SALE Engine with Accessories TSMO=488.2 No Prop Strike Photos, logs, details per request. Does 500 rpm fit that bill? For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (d) of this AD. 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. It is not an official legal edition of the Federal documents in the last year, by the Transportation Security Administration '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." what would martial law in russia mean phoebe arnstein wedding joey michelle knight son picture brown surname jamaica. 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. Service Bulletin 533A has the pertinent Lycoming prop-strike definitions for all Lycoming direct drive engines. Over the years, Continental has built a service offering for aircraft operators and owners These services include engine overhauls at the Continental factory service center for Continental, Titan, and LYCOMING engines, factory overhauls for Continental AvGas engines, sudden stoppage/propeller strikes, shock inspections, fleet overhaul programs, Jet-A burning engine A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. The general consensus is that at least some degree of tear-down is the only safe option under their definition, and largely follows manufacturer data in the general damage/repair evaluation techniques. (j) 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. 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. Another problem area is in engines with crank counterweights, a very common design. documents in the last year, 41 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. Others are not necessarily so forthcoming, so reliable conclusions are difficult to draw. continental prop strike ad. Aircraft was involved in a prop strike. documents in the last year, by the Federal Communications Commission Lycoming's Service Bulletin 533 would also have to be complied with without question. Sensenich Wood Propeller Co. 2008 Wood Court Plant City, FL 33563. ", Airworthiness Directive 2004-10-14 is applicable to Lycoming engines that experienced a prop strike. A full overhaul will cost about $12,500 plus accessories. More information and documentation can be found in our Or it could be an engine with illegal performance enhancements for a certified engine such as shaved decks to increase compression. The Lycoming information is more complicated and equivocating than the TCM directives in our opinion, as well explain. Maybe it is and maybe it isn't." The flange will break before it bends. Federal Register issue. Communications should identify the Rules Docket number and be submitted Start Printed Page 70655in triplicate to the address specified under the caption ADDRESSES. I spoke with several shop owners and asked their opinion. 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. 01/17/2023, 202 Now I had to determine the consequences. Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Atlanta ACO. Say the engine is turning only 1000 rpm, barely above an idle. are not part of the published document itself. ", Case in point 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. That said, we did an article a few years ago where an owner of an old Bonanza bought an IO-520 engine from another Bonanza engine owner who upgraded to a factory IO-550. This year's numbers have placed us in the top 10, highlighting another strong year of property development. I watched the video and figured the pilot had reduced power before hitting the ditch. More than the prop and crankshaft Dialing in the flange is worthless for this. O-435, and TIO-541 series engines being exempt. 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. 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.". This may seem to contradict itself since sudden stoppage is mentioned earlier in the AD in the prop strike-definitions section, but thats the way it is written with an orientation to certain types of direct drive Lycoming engines, with only Lycoming O-145, O-320H, O-360E, LO-360E, LTO-360E,O-435, and TIO-541 series engines being exempt. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. How much more time before overhaul is remaining on the engine? It pretty much echoes the TCM service bulletin but adds two other situations. 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. (iii) Maintain a record of each core sample obtained with each rotobroach bit used. I've heard that a Continental doesn't require a tear down and inspection as a Lycoming does, but looking at Continental's Service Bulletin SB96-11B it looks Home. (iv) Do not exceed the torque limits specified in TCM MSB 00-5C, dated October 10, 2000, when obtaining the core sample. 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. In fact, the customers were sold their own crank. DeJoris says he is dealing with claims adjusters on a regular basis, and many adjusters today choose to have you go the extra mile and tear down the entire engine and propeller and do a thorough inspection." 01/17/2023, 823 Continental Motors states: 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 (3) A sudden RPM drop while impacting water, tall grass, or similar yielding medium, where propeller damage is not normally incurred. What other services or inspections are being performed at the same time as the inspection? The President of the United States manages the operations of the Executive branch of Government through Executive orders. on For more than three decades, customers have trusted their airplanes to Triad Aviation, Inc. Forums. The authority citation for part 39 continues to read as follows: Authority: These can be useful So, when it comes time for that prop strike/sudden. 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.". On Lycoming engines, which are not nitrided, the flange can be bent. The alternator is turning 3000 rpm because of gearing. Start with all relative ADs, collect all service bulletins and service letters offered by the particular engine manufacturer, and sit with the insurance adjuster. Others will pay for all costs for the inspection and for any parts needed due to the incident. 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). For complete information about, and access to, our official publications This proposed rule does not have federalism implications, as defined in Executive Order No. These counterweights move on relatively soft bushings. If the engine is being disassembled does the estimate include testing after reassembly? Its also important to point out that this is not the only Lycoming bulletinthat discusses prop strikes. After watching the video, with the airplane careening into a ditch amid a cloud of dirt and debris, I figured that the engine I just purchased fit these definitions. Section 39.13 is amended by adding the following new airworthiness directive: 2000-23-21 Teledyne Continental Motors: Amendment 39-11994. Compliance with this service bulletin is mandatory per AD 91-14-22. 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. (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. Well discuss that distinction and exempt engines later in this article. Even tip damage is considered cause for teardown For crankshafts identified in paragraph (a) of this AD, TCM has already determined which engines have a new suspect crankshaft installed and have identified those engines by engine SN. That AD requires removing a core sample of material from the propeller mounting flange and sending the core sample to TCM for evaluation. 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. Either may require additional inspection but neither may negate the inspections required by the FARs. Each document posted on the site includes a link to the Docket 2000-NE-16-AD. A prop that hits so hard as to bend the crank flange is only one of several considerations. the material on FederalRegister.gov is accurately displayed, consistent with 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. At least thats our goal. Removing and reinstalling a propeller take just a few hours, and the prop shops don't care who brings the job through the door. Secure the airplane and figure that it will be out of commission for a few months. Got a nick on your prop? 600-ft lb load on the crank gear on a sudden stop from 1000 engine rpm. 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. Start dateSep 28, 2016. Should he also have performed the obligatory engine inspections? Are there any hidden costs? TCM's SB 97-6 specifies the mandatory items that must be replaced when the engine is torn down. The service information referenced in this AD 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. This information may be examined at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. on 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. 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 Basically the fuel gauges in the center console are shorting out. The OFR/GPO partnership is committed to presenting accurate and reliable K. kevmor99. (e) The actions required by this AD shall be performed in accordance with Teledyne Continental Motors MSB 00-5C, dated October 10, 2000. Information about this document as published in the Federal Register. 2 Blade Continental O-200/Lycoming O-235 Ground Adjustable STOL Propeller $ 74CK $ 76AK-2 $ FIND A DEALER NEAR YOU. (ii) If TCM notifies you that the crankshaft is serviceable, the propeller assembly may be reinstalled. the most are "prop strike." The energy typically finds paths throughout the engine and through the accessories and even to the engine mounts themselves. documents in the last year, 28 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. At Unlimited Aero Engines we know that things happen, and happen fast. In addition, propeller strikes also include situations where an aircraft is 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. 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. They either read full or Thread starterkevmor99. The bulletin reads as follows: 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. Although this action is in the form of a final rule that involves requirements affecting flight safety and, thus, was not preceded by notice and an opportunity for public comment, comments are invited on this rule. Includes: Fuel Injection Spyder Starter Alternator Bendix Magnetos Gamijectors I will be more than happy to ship this engine to you. The Public Inspection page may also We get e-mail from readers who have had what they often prefer to call prop incidents as to possibly avoid the term prop-strike, and its frequent need for a recommended or mandatory engine tear down. The $8,500 differential is not insignificant. This damage can result in catastrophic engine failure. 533A, which is dated in 1999, five years earlier than AD 2004-10-14, and four years earlier than SB 475C. These cases should be handled as sudden stoppages because of potentially severe side loading on the crankshaft flange, front bearing, and seal. Are the minimum legal requirements being met? In another incident a prop hit a small rock, which had been dislodged and thrown back by a larger aircraft. When 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." It defines a sudden engine stoppage as; stopping an engine in one revolution or less for any reason, be it from propeller impact or from an engine failure of some sort. These are the requirements as we see them. 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. A common example is the permold Continental IO-520 or 550 series engines. No more filing blades a bit shorter after a tip strike, or performing a run-up and signing off on an engine after the runway lights have been mowed a bit shorter. documents in the last year, 876 MSB 005C lists additional serial numbers (SN's) of affected engines and suspect crankshafts that were manufactured between April 1, 1998, and March 31, 2000, inclusive. The FAA has reviewed and approved the technical contents of TCM Mandatory Service Bulletin (MSB) 005C, dated October 10, 2000. has no substantive legal effect. If you've attended AirVenture or any of the other major airshows, you've heard it. This article originally appeared in the December 2012 issue of Light Plane Maintenance. 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