# SDR USAA920071369

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2007
- Submitted: December 24, 2007
- Operation: Air carrier
- Aircraft: N451UW
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24934
- Aircraft time: 46,954 hours, 31,297 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA920071369

## Discrepancy

PIT - MAJOR REPAIR - FWD PRESSURE BULKHEAD INSP, A CRACK FOUND ON FWD PRESSURE BULKHEAD AT BS 178, WL 218, AND RBL 12.  REPAIRED DAMAGE AREA AND INSTALLED DOUBLER IAW B737-300 SRM 53-10-08, FIG 201, REPAIR 9.

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