SDR UPS02438963

Service difficulty report · Rib · Boeing 747123F

Difficulty date: June 29, 2002
Submitted: August 6, 2002
Operation: Air carrier
Aircraft: N677UP
Make and model: Boeing 747123F
Aircraft serial: 20391
Aircraft time: 88,072 hours, 22,099 cycles
System (JASC): 5712 · Wing, Rib/Bulkhead
Part: Rib
Part number: 65B078466
Condition: Corroded
Location: Rt Wing
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INSPECTION TYPE:C, RT WING L/E RIB AT OLES 1421.35 FOUND CORROSION AT ROTARY ACTUATOR MOUNTING BOLT HOLES BORE AND CUTOUT SURFACE. CORROSION BLEND OUT 0.031 INCH X 0.5 INCH X 0.5 INCH EXCEED SRM LIMIT. WING LEADING EDGE RIB INTERMIN CORROSION REPAIR CUTOUT AS PER EO B747-5740-17207 APPENDIX -A-. COMPLETED REPAIRS TO BE DETAIL VISUALLY INSPECTED AT EVERY C-CHECK NOT EXCEED 18 MONTHS AS PER EO B747-5740-17207 APPENDIX -B-.