What was found
DURING COMPLIANCE WITH AD 90-25-01, CPCP TASK C53-701-02, THE LEFT HORIZONTAL STABILIZER AFT, LOWER BOLT WAS EXTREMELY DIFFICULT TO LOOSEN/REMOVE. ONCE REMOVED, THE BOLT AND BUSHINGS WERE FOUND GALLED. EVIDENCE OF CORROSION AROUND BUSHING TO FITTING LUG MATING SURFACES. THE BUSHINGS WERE REPLACED PER BOEING SB 737-55-1033 AND 737-55-1055. THE BOLT WAS REPLACED WITH A NEW UNIT. (W)