# SDR UPS202974

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N921UP](https://openairdocs.org/aircraft/N921UP), registered now
- Make and model: Boeing 727180C
- Aircraft serial: 19874
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Corroded
- Location: Lt Wing
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS202974

## Discrepancy

WHILE IN 'C' CHECK, MAINTENANCE FOUND CORROSION ON LT WING RIB UPPER CHORD AT LBL 70.5 TEE CLIP AND STRAP.  INSTALLED REPAIR UPS EO B727-5710-1271.

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