# SDR F3LA200100027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2001
- Submitted: February 22, 2001
- Operation: Air carrier
- Aircraft: [N311FL](https://openairdocs.org/aircraft/N311FL), registered now
- Make and model: Boeing 737-3S1
- Registry model: [Boeing 737-3S1](https://openairdocs.org/model/boeing-737-3s1) (OpenAirDocs)
- Aircraft serial: 24856
- Aircraft time: 31,627 hours, 19,875 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- 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/F3LA200100027

## Discrepancy

DURING C-4 CHECK, INSPECTION REPORTED CORROSION ACROSS TOP OF AFT FUSELAGE FLOORBEAM INTERCOSTAL CAP, STA 951.5, BETWEEN 26 LBL AND 50 LBL.  MAINTENANCE REMOVED FLOORBEAM INTERCOSTAL, AND FABRICATED, PRIMED AND INSTALLED REPLACEMENT FLOORBEAM INTERCOSTAL PER EA 53-737-113.

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