# SDR USAA990605

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N404US](https://openairdocs.org/aircraft/N404US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23886
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 967
- Part time: 30,660 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/USAA990605

## Discrepancy

CLT - DURING Q-5 CHECK, VISUAL INSPECTION FOUND AN AREA OF CORROSION APPROXIMATELY 2 INCHES BY 6 INCHES UPPER T-CAP AT STA 967, LBL 30, LBL 5, AND RBL 18 FLOORBEAM.  CORROSION TASK NR C53-107-02.  CORROSION LEVEL 2.  REPAIRED PER TR-53-15-01A AND SRM 53-60-51.  (X)

---
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.