# SDR IPXA2025022192637

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2025
- Submitted: February 24, 2025
- Operation: Air carrier
- Aircraft: [N439UP](https://openairdocs.org/aircraft/N439UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25470
- Aircraft time: 31,502 hours, 20,911 cycles
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Filler
- Part number: 311N500232
- Condition: Corroded
- Location: Zone 400
- 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/IPXA2025022192637

## Discrepancy

NR 1 PYLON HAS SURFACE CORROSION AROUND FASTENER HOLES FOR PANEL 433CL. DOT 142-22.REMOVED CRACKED AND CORRODED STRAP (OUT OF LIMITS WITH EXFOLIATED CORROSION VISIBLE IAW SRM 51-10-08) IAW B757-200-51-40-02-OG.

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