# SDR FDEA201810103350

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 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): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Seat Track
- 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/FDEA201810103350

## Discrepancy

EVIDENCE OF CORROSION ON SEAT TRACK UPPER SURFACE INBOARD AND OUTBOARD FLANGES BS 900 TO BS 1080 AT RBL 45.5 NUMEROUS LOCATIONS. CORROSION REMOVED IAW SRM 51-10-02 REV 125 AND FOUND TO BE OUTSIDE LIMITS IAW SRM 53-00-51-1A DETAIL III REV 125, NOMINAL THICKNESS OF UPPER CHORD = 0.090" MAX ALLOWABLE BLEND = 10% 0.009" ACTUAL MAX BLEND = 0.076". FLOORBEAM UPPER CHORD REPLACED IAW DWG 111N5201, 143N5470, 144N8017 AND SRM 51-40-02 REV 125 BS 900 T0 BS 1080 RBL 45.5.

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