# SDR FDEA201811213336

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2018
- Submitted: November 23, 2018
- Operation: Air carrier
- Aircraft: [N916FD](https://openairdocs.org/aircraft/N916FD), registered now
- Make and model: Boeing 757-27B
- Registry model: [Boeing 757-27B](https://openairdocs.org/model/boeing-757-27b) (OpenAirDocs)
- Aircraft serial: 24137
- Aircraft time: 71,433 hours, 27,177 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/FDEA201811213336

## Discrepancy

MAIN CARGO DECK FLOORBEAM UPPER CHORD CORRODED BS 1040-BS 1080 RBL 26. CORROSION REMOVED IAW SRM 51-10-02 REV 125 AND FOUND TO BE OUT OF LIMITS IAW SRM53-00-51-1A DETAIL III REV 125. NOMINAL THICKNESS OF UPPER CHORD 0.090" MAX ALLOWABLE BLEND=10%=0.009 ACTUAL MAX BLEND DEPTH= 0.024". FLOORBEAM UPPER CHORD REPLACED IAW DWG 144N8017, 111N5201 AND SRM 51-40-02 REV 125 BETWEEN BS1040 TO BS 1080.

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