# SDR UALA2012062203321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 15, 2012
- Submitted: July 26, 2012
- Operation: Air carrier
- Aircraft: N178UA
- Make and model: Boeing 747422
- Aircraft serial: 24385
- Aircraft time: 90,478 hours, 10,927 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/UALA2012062203321

## Discrepancy

STA 990-1000 S45R-S46R EXT FUSE SKIN DOUBLER CORROSION AT WATER TANK FILL VALVE.  MAJOR REPAIR ACCOMPLISHED.  REMOVED DAMAGE.  MFG NEW DOUBLER PER DRAWING 65B09637-1 AND INSTALLED.  NON ROUTINE 0290082.

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