REFLECTOR: AMATEUR-BUILT MAINTENANCE/Certified Engine

[Scott Derrick]

John,

You gotta wonder why people hash this over and over and never get it.

The Regs are the Regs.  Its that simple. Don't be confused by folks 
reading their interpretation when its in complete disagreement with the 
FAR's and your Operating Limitation.

heres an example of BS from Steve's email.

 >>If you change propellers, you must notify the FAA (not by a 337) of 
your change.

This blanket statement about all homebuilts is complete hogwash.  Your 
Operating Limitations says what you should do for Major Changes.  There 
are not little Major changes and huge Major changes and you do this for 
this and that for that..  There are just major changes.  Changing to a 
new propeller is a major change, thats all.  Folow your Operating 
Limitations on how to handle major changes.

There is nothing in your OL, or mine  that specifies whether your engine 
is certified. By definition, if you read the FAR's  the moment you 
install your engine into your Velocity it is Un-Certified. Its on an 
uncertified mount, it has uncertified parts installed on it.  a 
certified engine can only be installed in an airframe that is certified 
for it. Your airframe is not so it becomes uncertified before you ever 
start it. To return it to certified status an IA must enter that process 
into the logs after it has been removed from the experimental airplane. 
That process could entail anything from a complete rebuild to a pencil whip.

I've heard the data plate nonsense over and over.   That data plate has 
nothing whatsoever to do with the certification status of your engine. 
Your logs do.  The engine logs tell the whole story.  Don't be foolish 
and rip the data plate off, you don't need to and its a good reference 
for doing engine work on the plane.

Scott

John Dibble wrote:
> steve korney wrote:
>
>   
>> If the aircraft received its original airworthiness certificate based on the
>> fact that the engine was certified and you alter it in any manner that would
>> render it no longer within certification requirements, then you must notify
>> the FAA of your change and receive an approval.
>>     
>
> I don't see anything in my log book as to whether my engine was certified or not.  It
> does have non-certified parts like an EI and and electric fuel  primer.  Does this
> mean the engine is non-certified?
>
> John
>
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