# SDR UPS04243199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2004
- Submitted: September 29, 2004
- Operation: Air carrier
- Aircraft: N938UP
- Make and model: Boeing 727173C
- Aircraft serial: 19506
- Aircraft time: 53,145 hours, 34,107 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Corroded
- Location: Lt Wing L/E
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS04243199

## Discrepancy

INSPECTION TYPE: C, EXFOLIATION CORROSION FOUND ON FIXED WING L/E RIB LOWER CHORDS AT LES 236.217 AND LES 243.977.  REMOVED CHORDS ON ABOVE AREA IAW SRM 51-30-02.  FABRICATED AND INSTALLED CHORDS ON ABOVE AREA IAW BOEING DRAWING NR 65-16269.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.