# SDR UPS02439580

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2002
- Submitted: October 4, 2002
- Operation: Air carrier
- Aircraft: N683UP
- Make and model: Boeing 747121
- Aircraft serial: 20353
- Aircraft time: 81,157 hours, 20,074 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Cracked
- 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/UPS02439580

## Discrepancy

DURING C CHECK,  RT W 22 V/C FLAP I/B ROTARY ACTUATOR MOUNTING RIB MOUNT BOLT HOLE SURFACE CORROSION REVEALED AT ALL MOUNT HOLES AND BORES. (RHW OLES 1205)     RT W 22 V/C FLAP I/B ROTARY ACTUATOR RIB REPAIRED AS PER  RS R57-41-34900 & EO B747-5740-17619-A. ROTARY ACTUATOR R + I PER MM 27-81-07 RIGGING AND OPERATION CHK C/OUT PER MM 27-81-00 EO B747-5740-17619-A ACCOMPLISHED.

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