# SDR FDEA200910313752

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2009
- Submitted: November 3, 2009
- Operation: Air carrier
- Aircraft: [N921FD](https://openairdocs.org/aircraft/N921FD), registered now
- Make and model: Boeing 757-23A
- Registry model: [Boeing 757-23A](https://openairdocs.org/model/boeing-757-23a) (OpenAirDocs)
- Aircraft serial: 24924
- Aircraft time: 68,004 hours, 21,149 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 141N517039
- Condition: Corroded
- Location: Bs 324-377
- 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/FDEA200910313752

## Discrepancy

MAIN CABIN FLOOR STR AT L-1 DOOR STA 324 TO 377 LBL 60 HAS AREAS OF CORROSION AROUND NUT PLATES.  REMOVED CORROSION AT FLOOR STRUCTURE FROM F STA 324 TO 377 FOUND OUT OF LIMITS IN 3 EA FLOOR SUPPORTS LBL 60 IAW SRM 53-00-04. REMOVED AND REPLACED WITH NEW FLOOR SUPPORTS PN'S 141N5170-39,-40, -48 AND INSTALLED IAW SRM 51-40-02 THIS IS A MAJOR "A' REPAIR NO FOLLOW-UP INSP REQUIRED.

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