# SDR USAA960759

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 26, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N439US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24781
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Corrosion
- Location: Bs 993
- Part time: 18,642 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA960759

## Discrepancy

INT - DURING Q-1 CHECK VISUAL INSPECTION, FOUND .5 INCH BY 3 INCH CORROSION STATION 993, JUST ABOVE STRINGER 17 R FRAME.  INSTALLED REPAIR ANGLE, REPAIRED PER SRM 51-70-11.  CORROSION TASK NR C53-107-02, CORROSION LEVEL 1.  (M)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.