In rec.aviation.owning Michael Horowitz wrote:
: I imagine circumstances dictate this to some degree, but if your A&P
: does some work for you, do you tip him? Percentage? - Mike

If he does exceptional, beyond the call of duty work I will tip him.
Especially as he does not charge his regular customers to borrow his
shop, tools, or expertise for short periods of time, nor does he charge
for inspecting work I have done and recording such in my logs.
--
Aaron Coolidge