# SDR USAA2013081900014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2013
- Submitted: August 19, 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: Intercostal
- Part number: 6547960U9
- 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/USAA2013081900014

## Discrepancy

DURING C4 CHECK,  CORROSION FOUND ON INTERCOSTAL WEB AT BS 848, RBL 24.  REPLACED INTERCOSTAL IAW SRM 53-00-04.

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