What was found
WHILE IN HEAVY CHECK, AFT SERVICE DOOR BEAM HAS CORROSION AROUND FWD AND AFT GIRT BAR FITTINGS AS MARKED. REMOVED AND REPLACED AFT SERVICE DOOR THRESHOLD BEAM AND RESTORED SURFACE PROTECTION REF SRM 51-41-01, 51-41-02, 51-43-04, 51-42-01, 51-43-03, 51-23-04, 51-23-06, 53-23-00 AND AMM 53-23-25, 51-41-01.