# SDR IPXA2026042313853

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2026
- Submitted: April 27, 2026
- Operation: Air carrier
- Aircraft: [N428UP](https://openairdocs.org/aircraft/N428UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25459
- Aircraft time: 33,361 hours, 22,894 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 144N5081
- Condition: Corroded
- Location: Zone 200
- 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/IPXA2026042313853

## Discrepancy

MAIN DECK CABIN FLOOR STRUCTURE, BS 900 - 1080,  LBL 45.5 - 54.9 CORRODED,  REMOVED CORROSION ON MAIN DECK CABIN FLOOR STRUCTURE FROM STA. 900-1080 AND LBL 45.5 TO 54.9 L/H  IAW SRM 51-10-02-0G-0. IAW AIPC 53-40-66-01, REV 138, AND DWGS 14405003,  REPLACEMENT FLOOR SUPPORT COVER PLATE INSTALLED TO ACFT CONFIGURATION IAW AIPC AND DWGS.

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