Upper Cowl separated on one side on my Arrow in flight - wind blew it
up on the windshield and since the other side remained attached, it
twisted and put about a 1/8 inch dent in the back of both blades.
Mechanic insisted I tear the whole #$&$ engine apart. One blade turned
out to be out of spec, couldn't find replacement 2blade prop, ta da ta
da da da. That's how it goes with airplanes. At least I know the
engine is nice & clean inside and the new 3 blade prop looks nice.