# SDR USAA2013082600025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 23, 2013
- Submitted: August 26, 2013
- Operation: Air carrier
- Aircraft: N406US
- Make and model: Boeing 737401
- Aircraft serial: 23876
- Aircraft time: 67,898 hours, 45,578 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Condition: Corroded
- Location: Zone 100
- 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/USAA2013082600025

## Discrepancy

DURING C4 CHECK, CORROSION FOUND ON L1 DOOR SILL ZEE ANGLE BETWEEN BS 965 TO 986, LBL 52.  REPAIRED ZEE ANGLE IAW SRM 51-70-11.

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