rightrudder
Well Known Member
Where the fiberglass thickness is sufficient for a full countersink, do you always need to use a Tinnerman washer, or can you simply use a countersunk screw? Without the washers, does vibration over time wallow out the holes?
It seems obvious to use them on thin fiberglass, like the empennage fairing, but less so in other areas like the wheel pants.
It seems obvious to use them on thin fiberglass, like the empennage fairing, but less so in other areas like the wheel pants.