09-13 Match drilling trim tab spar to trim tab hinge - hole size???
I'm about to match drill my trim tab spar (E-01405) to the trim tab hinge (page 09-13).
The instructions say to use a #40 drill. But my trim tab spar is prepunched with #30 holes.
So somewhere is a mistake. Are the instructions wrong and should I use a #30 drill for the aft side of the trim tab hinge (for the forward side I have used #40 and everything was fine)? Or is my E-01405 trim tab spar pre-punched with the wrong hole sizes?
Does it matter if I use #30 or #40 holes on the trim tab hinge?