Piper J3
Well Known Member
My friend is doing Annual Condition Inspection on his Legacy RV-12 and found a large crack in rear circular tube of the engine mount. Crack is on right hand side just above where the lower engine support arm is welded to the rear ring. Airplane is five-years-old and 500TT… operated gently off of hard pavement. Photo attached…
Some background…. The engine mount on my RV-12 cracked at 630TT. My crack was in the lower engine support arm on the left side. My airplane is an early SN and has first iteration of the engine mount design which does not include gusset plates at the engine case mounting holes. Photo attached…. I know of only one other RV-12 that had a cracked engine mount like this latest crack on the rear circular ring… and I believe int the exact same spot.
The purpose of this thread is to inform the RV-12 fraternity and to ask if anyone else has experienced a cracked engine mount…
Some background…. The engine mount on my RV-12 cracked at 630TT. My crack was in the lower engine support arm on the left side. My airplane is an early SN and has first iteration of the engine mount design which does not include gusset plates at the engine case mounting holes. Photo attached…. I know of only one other RV-12 that had a cracked engine mount like this latest crack on the rear circular ring… and I believe int the exact same spot.
The purpose of this thread is to inform the RV-12 fraternity and to ask if anyone else has experienced a cracked engine mount…