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Bob Noel wrote in
: Is one {PMA} required for an STCed alteration? Yes. Not quite. A part may be manufactured by the owner/operator and installed under STC, or it may be manufactured *and installed* by the holder of the STC without PMA. Both these minor points are seldom worthy of note, but they are there. For example: GAMI designed their new fuel injectors. They went through testing and the STC was awarded. They were then allowed to make them and install them on all aircraft/engines for which the STC applied. The FAA would not allow the PMA application to be even be submitted until the STC was approved. [It's not clear that this is a rule, so much as an FSDO made up rule.] Until the PMA was approved GAMI could not sell the injectors to anyone else for installation elsewhere. You wanted the injectors, you flew to Oklahoma and had GAMI put them in. Once the PMA was approved the restriction went away. ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
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