# SDR USAA2011032291170

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2011
- Submitted: March 22, 2011
- Operation: Air carrier
- Aircraft: [N404US](https://openairdocs.org/aircraft/N404US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23886
- Aircraft time: 60,100 hours, 40,750 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 65465792
- 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/USAA2011032291170

## Discrepancy

CLT - Q2 - LEVEL 2 EXFOLIATION CORROSION ON STIFFENER AT BS 1112 AT APU INLET, RIGHT SIDE AT LOWER FORWARD CORNER.  REPLACED STIFFENER AT BS 1112 AT APU INLET, RIGHT SIDE AT LOWER FORWARD CORNER IAW EA 102623.

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