# SDR USAA060835

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 15, 2006
- Submitted: June 15, 2006
- Operation: Air carrier
- Aircraft: N409US
- Make and model: Boeing 737401
- Aircraft serial: 23879
- Aircraft time: 49,770 hours, 49,770 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- 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/USAA060835

## Discrepancy

STA 328-344 LBL 12.  REMOVED AND REPLACED INTERCOSTAL IAW SRM 51-40-02 LEVEL 2 C53-107-01   DEFECT SIZE: 6 IN

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