# SDR CALA2016030395203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2016
- Submitted: March 3, 2016
- Operation: Air carrier
- Aircraft: N175UA
- Make and model: Boeing 747422
- Aircraft serial: 24382
- Aircraft time: 98,879 hours, 11,004 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/CALA2016030395203

## Discrepancy

EXTERNAL FUSELAGE BELLY SKIN AT BS 770 FOUND CORRODED, BETWEEN STRINGER 46R - 47R.  REMOVED DAMAGE, FABRICATED & INSTALLED EXTERNAL DOUBLER REPAIR IAW ECRA 5330-05547.

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