# SDR FDEA200907302840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2009
- Submitted: July 30, 2009
- Operation: Air carrier
- Aircraft: [N933FD](https://openairdocs.org/aircraft/N933FD), registered now
- Make and model: Boeing 757-21B
- Registry model: [Boeing 757-21B](https://openairdocs.org/model/boeing-757-21b) (OpenAirDocs)
- Aircraft serial: 24330
- Aircraft time: 52,447 hours, 30,243 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 146N5091
- Condition: Corroded
- Location: Zone 200
- 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/FDEA200907302840

## Discrepancy

STA 1681 LBL 32 IN FLOORBEAM UPPER CHORD BOTTOM CORRODED.  CORROSION ON UPPER CHORD FOUND EXCEEDED SRM ACCEPTABLE LIMITS.  REPAIR CARRIED OUT IAW EA F-5310-126226, CORROSION ON FLOORBEAM 1681.80 AT MULTIPLE LOCATIONS - REPAIR.  REPAIR IS CLASSIFIED AS MAJOR IAW GMM 6-2-100 CRITERIA.

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