SDR UPS02438959

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: 65B101485
Condition: Corroded
Location: Lt 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, LT WING LEADING EDGE RIB AT ILES 842.05 FOUND CORROSION AT ROTARY ACTUATOR MOUNTING BOLT HOLES BORE AND CUTOUT SURFACE. CORROSION BLEND OUT 0.024 INCH X 0.5 INCH X 0.5 INCH, EXCEED SRM LIMIT. WING LEADING EDGE RIB INTERIM CORROSION REPAIR CUTOUT AS PER EO B747-5740--17207 APPENDIX -A-. COMPLETED REPAIRS TO BE DETAIL VISUALLY INSPECTED AT EVERY C-CHECK NOT TO EXCEED 18 MONTHS AS PER EO B747-5740-17207 APPENDIX -B-.