# SDR USAA2012100100004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2012
- Submitted: October 1, 2012
- Operation: Air carrier
- Aircraft: [N432US](https://openairdocs.org/aircraft/N432US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24554
- Aircraft time: 60,936 hours, 40,702 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Structure
- Part number: 6545875LL70
- 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/USAA2012100100004

## Discrepancy

Q6 CHECK - EXFOLIATION CORROSION ON CHORD BETWEEN BS 251.6 TO BS 364, S17R.  REPLACED CHORD BETWEEN BS 251.6 TO BS 364, S17R IAW B737-400 SRM 51-40-02-0G, FIGURE 12, AND 51-10-02-0G, FIGURE 1.

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