# SDR IPXA2025101554034

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2025
- Submitted: October 21, 2025
- Operation: Air carrier
- Aircraft: [N425UP](https://openairdocs.org/aircraft/N425UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25370
- Aircraft time: 35,100 hours, 23,211 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Crease Beam
- Part number: 146N535334
- 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/IPXA2025101554034

## Discrepancy

CORROSION FOUND ON CREASE BEAM ON MAIN CABIN FLOOR BETWEEN STA 1600-1580 LBL AT STR 17. REMOVED 1EA SIDEWALL LINING P/N:146N5509-7 FROM MAIN CABIN BETWEEN BS 1580 TO 1660 LBL-STGR 17 FOR ACCESS IAW  51-40-02-0G-0.  ASSEMBLED AND INTALLED REPAIR PARTS IAW E.A. 757-5300-01-B0575 STEP 9 AND SRM 53-00-13 REPAIR 1, AT MAIN CABIN FLOOR BETWEEN BS 1600-1580 LBL AT STR. 17.

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