# SDR IPXA2025050324761

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2025
- Submitted: May 14, 2025
- Operation: Air carrier
- Aircraft: [N447UP](https://openairdocs.org/aircraft/N447UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27736
- Aircraft time: 35,880 hours, 20,372 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Doubler
- Part number: 311N504662
- 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/IPXA2025050324761

## Discrepancy

NR 1 ENG I/B PYLON PPS. 1.8317 AFT LOWER INSIDE PANEL 433HR HAS CORROSION. BLUE DOT TRIMMED OUT CORROSION DAMAGE FOR ACCOMPLISH STEP 2 OF E.A.# 757-5450-27-A3910 PRELIMINARY 1. COMPLETED THE REPAIR FOR ACCOMPLISH STEP 27 OF E.A.# 757-5450-27-A3910 PRELIMINARY 3.

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