# SDR UPS02438970

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 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](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 65B078426
- Condition: Corroded
- Location: Rt Wing
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS02438970

## Discrepancy

INSPECTION TYPE: C, RT WING L/E RIB AT OLES 1381.25 FOUND CORROSION AT ROTARY ACTUATOR MOUNTING BOLT HOLES BORE AND CUTOUT SURFACE.  CORROSION BLEND OUT 0.030 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 TO EXCEED 18 MONTHS AS PER EO B747-5740-17207 APPENDIX -B-.

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