Tonight I finished a job on the cowling, locating and drilling the screw attach points on the trailing edge. There are a total of 8 holes, 4 in the middle section, and two more on each side. There’s a template supplied for the outboard holes, so I made the template and drilled those outboard holes, then attached the heat flap to locate the 4 center holes.
I was careful to not drill into the nut plates, which would cause them to lose their ability to hold the screws.
