# SDR USAA2009010590028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2008
- Submitted: January 8, 2009
- Operation: Air carrier
- Aircraft: [N438US](https://openairdocs.org/aircraft/N438US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24560
- Aircraft time: 50,701 hours, 34,140 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 6545810
- Condition: Corroded
- Location: Fuselage
- 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/USAA2009010590028

## Discrepancy

CLT - Q5 - MAJOR REPAIR - NR 03C10753060/011 - LEVEL 2 EXFOLIATION CORROSION ON FLOORBEAM AT BS312, RBL13 & RBL30.  REPAIRED FLOORBEAM AT BS312, RBL13 & RBL30 IAW B737 SRM 53-10-51.

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