# SDR USAA020092

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2002
- Submitted: April 1, 2002
- Operation: Air carrier
- Aircraft: N776AU
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24934
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Fuselage
- Part time: 32,053 hours
- 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/USAA020092

## Discrepancy

PIT - FOUND FLOORBEAM SURFACE CORROSION 1 INCH BY 1 INCH AREA, FS 927 AT ATTACH POINTS FOR FLOORBOARDS.  CORROSION LEVEL 1, TASK NR C53-107-02.  REMOVED LEVEL 1 CORROSION PER SRM 53-0-51.  (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.