# SDR IPXA2026032721947

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2026
- Submitted: March 30, 2026
- Operation: Air carrier
- Aircraft: [N451UP](https://openairdocs.org/aircraft/N451UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27739
- Aircraft time: 41,230 hours, 23,656 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor Panel
- Part number: 146N543130
- Condition: Corroded
- Location: Zone 100
- 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/IPXA2026032721947

## Discrepancy

EXFOLIATION FLOOR PANEL RT SIDE AFT CARGO BS 1600-1560,  STR 27 AND 28R.  REMOVED CORROSION FROM FLOOR PANEL RT SIDE AFT CARGO. MAT LOSS MORE THAN 50%. MAX ALLOWABLE IS 10%. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-1 FIG 101.  INSTALLED REPAIR DOUBLER IN RT SIDE AFT CARGO IAW SRM 51-70-11-0G-0 FIG 1 GUIDELINES AND SRM 51-40-02-0G-0.

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