jill(at)m-14p.com
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 Posted: Sat Jul 13, 2013 5:36 pm Post subject: Engine Teardown |
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Group,
I will offer up my opinion based upon my experiences in this business. There are some instances where money can be a great motivation.
OKBM did not have the overhaul experience that the Shakhty overhaul factory did in overhauling the M-14P engines. (As far as I know, OKBM is effectively out of the M-14P manufacturing business. Richard (Goode) may be better able to elaborate on this.) I asked the question when I traveled to Shakhty about their findings on prop strikes and the reply was that internal damage to the engine did not occur very often. This factory was operational since WWII, so they are the people that I sit up and take notice of. I cannot imagine how many M-14P they have overhauled.
The Wilga manual also gives a recommendation for prop blade length that can be missing before a teardown is required. This manual was written long before that directive was issued. The AI-14RA engine has much weaker drive components in the nosecase.
(Didn't we hash this all out on the List before???)
Ask yourself, why would M-14P, Inc, who is in a position to monetarily gain from this directive not be trying to direct their way? Because, we would rather people deal in the truth of matters and real experience. We have been in the Russian aircraft and engine business since 1992 and draw from what we have coming through our shop on major repairs, teardown inspections and overhauls. Every prop strike should dealt with on an individual basis, as there are many factors to consider.
I wholeheartedly agree with Mark on this issue.
Jill
M-14P, Inc.
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