# SDR FDEA201209213373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2012
- Submitted: September 21, 2012
- Operation: Air carrier
- Aircraft: [N956FD](https://openairdocs.org/aircraft/N956FD), registered now
- Make and model: Boeing 757236
- Aircraft serial: 29115
- Aircraft time: 28,331 hours, 16,449 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 143N55042
- Condition: Corroded
- Location: Bs 720
- 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/FDEA201209213373

## Discrepancy

CABIN FLOORBEAM AT BS 720 HAS PREVIOUS CORROSION BLEND OUT WITH CORROSION INSIDE FASTENER HOLES AT LBL 40.  R & R WITH NEW FLOORBEAM FABRICATED IAW DWG 143N5504 SHT 3 REV A AND INSTALLED IAW DWG 143N5015 SHT.9, REV B.  REPAIR IS MAJOR.

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