I finally understood why we torque those old Cessna flap tracks after a job in Tucson

We were doing a 100-hour inspection on a 172 at a small field outside Tucson, and the owner mentioned a slight vibration during flap extension. I found the inboard track bolts were just a bit loose, not even to the point of visible play. The old head mechanic there showed me the service bulletin from '92 that called for a specific re-torque sequence after any flap work, something my old shop never stressed. It made me realize how much we used to go by feel instead of the book on older airframes. Anyone else run into a 'new' procedure on a plane you thought you knew inside out?

3 comments

3 Comments

ryan_ellis1mo ago

Been there, it's a humbling feeling.

rodriguez.diana1mo ago

Tell me about it. That kind of moment really knocks you down a peg. Makes you realize you don't have it all figured out, which is honestly good for you in the long run. Still feels rough when you're in it though.

abby_black14d ago

Torquing by the book caught a loose bolt on an old Bonanza once, saved a big headache.