# SDR CALA2018020300463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2018
- Submitted: February 4, 2018
- Operation: Air carrier
- Aircraft: N502UA
- Make and model: Boeing 757222
- Aircraft serial: 24623
- Aircraft time: 94,297 hours, 27,213 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 148N313820
- 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/CALA2018020300463

## Discrepancy

UPPER FUSELAGE SKIN HAS CORROSION AT APPX B STA 1787 BETWEEN S4R AND S6R JUST FWD OF APU INLET DOOR AS MARKED 034-001 B757-53-3-6 042. REMOVED APU INLET DOOR, REPLACED SURROUNDING SKIN STRAP. REINSTALLED APU INLET DOOR IAW SUA 49-15-08-004-001, SRM 51-40-02, AMM 49-15-08-404-008 AND DWG 148N3138.

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