What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK. MAINTENANCE FOUND RT HORIZONTAL RIB 10 HAD 2 UPPER CRACKS AT FASTENER HOLES FWD AND AFT OF STR 02R. MAINTENANCE REMOVED AND REPLACED RT HORIZONTAL STAB RIB 10 NIAW SRM 51-40-08 AND DRAWING 170-62400.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE AIRCRAFT WAS IN HEAVY CHECK. MAINTENANCE FOUND RT HORIZONTAL RIB 10 HAD 2 UPPER CRACKS AT FASTENER HOLES FWD AND AFT OF STR 02R. MAINTENANCE REMOVED AND REPLACED RT HORIZONTAL STAB RIB 10 NIAW SRM 51-40-08 AND DRAWING 170-62400.