# SDR 08FDEA00672

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 29, 2008
- Submitted: March 3, 2008
- Operation: Air carrier
- Aircraft: [N903FD](https://openairdocs.org/aircraft/N903FD), registered now
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27124
- Aircraft time: 47,097 hours, 19,245 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 143N55225
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/08FDEA00672

## Discrepancy

FLOOR SUPPORT FROM STATION 720 TO 740, LBL 60, WL208, HAS CORROSION.  REMOVED CORROSION, FOUND TO BE OUT OF SRM 53-00-51, FIG 101, DETAIL III LIMITS, L= 8 INCH, W= 2 INCH, D= 0.15 INCH, ORIGINAL MATERIAL THICKNESS .056 INCH.  FABRICATED NEW FLOOR SUPPORT ON MAE TRAVELER NR T7/713361, FROM 7075-0-.056 B, HEAT TREATED TO T6.  REMOVED AND REPLACED FLOOR SUPPORT (PN: 143N5522-5) IAW SRM 51-40-02.  THIS IS A CATEGORY "A" MAJOR REPAIR WITH NO FOLLOW UP ACTION REQUIRED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.