What was found
FOUND ON F-1 LETTER CHECK - FRONT SPAR STIFFENERS CRACKED AT NR 4 LEADING EDGE SLAT, INBOARD TRACK ROLLER BOX. REPAIRED PER M/M 57-20-21.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FOUND ON F-1 LETTER CHECK - FRONT SPAR STIFFENERS CRACKED AT NR 4 LEADING EDGE SLAT, INBOARD TRACK ROLLER BOX. REPAIRED PER M/M 57-20-21.