Chuck wrote:

Here is a Grumman for sale, it has a Mazda engine

http://barnstormers2000.com/show_referred_ad.asp?ID=68377

I think the FAA only allows it in the experimental category for
a limited amount of time. They like to discourage people from
putting certified airplanes in the experimental category.
I think they are afraid people will circumvent the certified airplane
maintenance rules to save money.

Paul Lamar

Mike Collier wrote:

Paul, can the FAA force him to take it out of an experimental category.  How
can they do that?

Mike C.

I am not an FAA lawyer so take this as IMHO.
I am not sure what you mean. If he does not fly it they can do nothing.
If he wants to get it certified he must get the engine certified and
that would be nearly impossible using Mazda parts. One needs a QC paper trail
on every part.  If he wanted to copy the Mazda engine and make every
part himself then he could get the engine certified and possibly an
STC for installing the engine in the Grummun. On the other hand he
could take the Mazda out, replace it with the aircraft engine it
came with, get an annual and then put it back in certified service.

Paul
A friend of mine who is a CFI (not that that makes him know anymore than we) was
looking at two certified Bonanza's that were partially dismantled and he wanted to
buy them, make some modifications to them, and license them as experemental with a
Soob engine.
We would like to do the same with the Cessna 337 (oscar duece, O2 charlie) and
hang a three rotor on the aft engine mount, and some dead weight in the nose for
balance or something.
Royce

IMHO The FAA will let you do that for a limited amount of time.
Say one year and then you can apply for another year extension.
You must have a goal in mind. Such as getting an STC on the engine.
But then you will have to certify the engine. There are limatations
about where you can fly and who you can carry.

As I said I am not FAA lawyer so check with the FAA for from
the horses mouth.

Paul Lamar

Supposedly you can build your own experimental using parts of
certified aircraft, like wings from a Mooney and fuselage from a
Cessna, or something like that.  But the 51% rule probably
applies.  Just changing out an engine on a certified plane would
not be 51%.

--
Perry Mick
Duckt N7XR
http://www.ductedfan.com

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