Control surface repair legal?

OK... I've got a question. I've seen a number of aircraft around that have
had little patches and repairs made on them. Sometimes on a wing or fuselage,
sometimes on an elevator, sometimes on an aileron. I've heard that it is illegal to
patch moveable control surfaces, but yet I've seen numerous aircraft around with
repairs like that.

Does anyone know if this is true/false and which regs (chapter and verse)
dictate it?

Just curious...
-Cory

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* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
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