What was found
NR 4 EXHAUST STACK HAS AN ELONGATED BOLT HOLE WHICH IS ALLOWING THE BOLT HEAD TO REST ON AND WEAR INTO THE STACK SIDE WALL. (PHOTOS TO FOLLOW.)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 4 EXHAUST STACK HAS AN ELONGATED BOLT HOLE WHICH IS ALLOWING THE BOLT HEAD TO REST ON AND WEAR INTO THE STACK SIDE WALL. (PHOTOS TO FOLLOW.)