# SDR UALA2012111606591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 14, 2012
- Submitted: November 16, 2012
- Operation: Air carrier
- Aircraft: N553UA
- Make and model: Boeing 757222
- Aircraft serial: 25277
- Aircraft time: 67,112 hours, 24,941 cycles
- Engine: Pwa PW2037
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Failsafe
- Condition: Corroded
- Location: Bs 660
- 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/UALA2012111606591

## Discrepancy

FORWARD CARGO BAY, BS 660, WL 150, MAIN FRAME, AFT SIDE AT LBL 1, LBL 2 AND LBL 8 HAS AREAS OF CORROSION.    AREA BLENDED AND FOUND TO BE OUT OF LIMITS BY NDT.  REPLACED THE FAILSAFE AT BS 660 LBL 22 TO RBL 22 PER SRM 51-40-02. MAJOR REPAIR.

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