# SDR UALA2012120407048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2012
- Submitted: December 17, 2012
- Operation: Air carrier
- Aircraft: N180UA
- Make and model: Boeing 747422
- Aircraft serial: 25224
- Aircraft time: 89,974 hours, 10,738 cycles
- Engine: Pwa PW4056
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Corroded
- Location: Fuselage
- 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/UALA2012120407048

## Discrepancy

DURING ACFT MPV AT MAE, EXCESSIVE CORROSION DAMAGE WAS DETECTED ON THE INNER SURFACE OF THE FUSELAGE.  ACP'D INTERIM REP AIR IAW EVA IMC-30155.  THE AIRCRAFT REMAINS AIR-WORTHY UNTIL PTC 12669 OR REPAIR.

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