What was found
APU TORQUE BOX BOTTOM STRINGER CORRODED. REMOVED APU TORQUE BOX BOTTOM STRINGERS LOCATED DRILLED AND INSTALLED REPLACEMENT STRINGERS IAW B737 400 SRM 51 40 02 PG 2-5.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU TORQUE BOX BOTTOM STRINGER CORRODED. REMOVED APU TORQUE BOX BOTTOM STRINGERS LOCATED DRILLED AND INSTALLED REPLACEMENT STRINGERS IAW B737 400 SRM 51 40 02 PG 2-5.