# SDR USAA060378

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2006
- Submitted: March 2, 2006
- Operation: Air carrier
- Aircraft: N778AU
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24980
- Aircraft time: 41,342 hours, 41,342 cycles
- Engine: Cfmint CFM563B2
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Cracked
- Location: Wing
- 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/USAA060378

## Discrepancy

FOUND CRACKED LOWER AFT LEG OF WBL 135.5 RIB.  REMOVED DAMAGE, INSTALLED SHIMS AND REPAIR PARTS IAW EA 97418, DEFECT SIZE: 1.25 INCH.

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