Hello Net
I've been on vacation in LV for the past week and was surprised to find 
nearly 200 emails when I turned on this afternoon.  This answer is a little 
tardy, but here are a few comments about certified engines.  Some of these 
points have been made already.
1.   Certified engines must have logs in which it is written that it and all 
of it's parts meets the requirements for certification and signed by a 
competent authority.
2.   Each part of that engine must have a traceable history from manufacture 
thru installation in the certified engine.
3.   Any certified engine must be maintained in accordance with all FAA 
directives.
4.  If the basis of the aircraft certification included a certified engine, 
the aircraft must always maintain a certified engine, You can't just remove 
the data plate and call it a home built engine because if you do, the 
aircraft certification will no longer be within the specification which 
existed when it was issued.  You could de-certify the engine before aircraft 
certification, but you would destroy the value of the certified engine.
5.  Not complying with the AD's on engines or components which have them 
would be foolish.  For example, the Bendix dual mag,  if the impulse coupler 
AD were not complied with and the mag subsequently failed, the engine could 
quit and leave the pilot flying a glider.

Orma L. Robbiins
AP/IA
Southfield, MI
N110LR Tweety, old enough to drink this year
Flying and more flying, to the gathering or bust
http://www.kr-2.aviation-mechanics.com/



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