# SDR CALA2021091301558

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2021
- Submitted: September 13, 2021
- Operation: Air carrier
- Aircraft: [N34131](https://openairdocs.org/aircraft/N34131), registered now
- Make and model: Boeing 757224
- Aircraft serial: 28971
- Aircraft time: 88,009 hours, 18,716 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 143N5015
- Condition: Corroded
- Location: Bs 720 Rbl33
- 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/CALA2021091301558

## Discrepancy

REF AMES NR 0499 CORROSION FOUND ON FLOOR SUPPORT NEXT TO SEAT TRACK AT STA 720 RBL 33 UNDER FLOOR PNL 232LF. REMOVED FLOOR SUPPORT BY SEAT TRACK AT STA 720, RBL 33 FOUND TO BE OUT OF LIMITS, FABRICATED NEW FLOOR SUPPORT USING 7075-T6-071 PO # 0179415 IAW B757 BOEING DRAWING 143N505. SEE PARTIAL WORK COMPLETED AND PWS PAGE 1 ATTACHED ADD EMP:V931843

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