# SDR IPXA2026050103053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2026
- Submitted: May 1, 2026
- Operation: Air carrier
- Aircraft: [N454UP](https://openairdocs.org/aircraft/N454UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25475
- Aircraft time: 43,406 hours, 22,422 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 146N544711
- 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/IPXA2026050103053

## Discrepancy

AFT CARGO COMPARTMENT FLOOR STRINGER UPPER FLANGE HAS EVIDENCE OF CORROSION APPROX BTW BS 1460 AND BS 1480, LBL 10.45 AND RBL 10.45,   REMOVED CORROSION AT AFT CARGO COMPARTMENT FLOOR STRINGER UPPER FLANGE AT ACTUAL LOCATION STA 1470 LBL 10.45 IAW SRM 53-00-53-1A-1. INSTALLED NEW REPLACEMENT STRINGER AT AFT CARGO COMPARTMENT FLOOR IAW SRM 51-40-02-OG-0.

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