Earlier, JS wrote:


We tend to be a bit liberal with the EXP rules. I hear you can
disassemble and reassemble the whole flying machine, but modification
is a bit of a gray area. There is a rating (?) you can get from your
FSDO which would permit you to perform maintenance on your own
experimental aircraft. This can be used to log hours toward other
mechanic ratings...

So far as I know, there is no such rating. The closest thing I know of
is the reparman's certificate available to the builder of an
amateur-built experimental. As as others have mentioned, the only
unique priviledge it confers is that of conducting the annual condition
inspection.

Modifications depend on the aircraft's specific operating limitations.
Several years ago I developed a retrofit center stick control system
for my HP-18. At the time, my OLs specified that I had to inform the
FAA in writing of any major modifications. I did, and the FAA guys came
out and inspected it. They issued a new airworthiness certificate, and
also new operating limitations that said removed the provision for
informing the FAA, and instead just imposing a new test period.

Thanks, and best regards to all

Bob K.
http://www.hpaircraft.com/hp-24