# SDR IPXA2017041716180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2017
- Submitted: April 17, 2017
- Operation: Air carrier
- Aircraft: [N579UP](https://openairdocs.org/aircraft/N579UP), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 26062
- Aircraft time: 95,487 hours, 16,166 cycles
- System (JASC): [5410 · Nacelle/Pylon, Main Frame](https://openairdocs.org/jasc/5410)
- Part: Torque Box
- Part number: 311U21542
- Condition: Corroded
- Location: Nr 2 Nacelle
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2017041716180

## Discrepancy

INSPECTION TYPE: D2, CORROSION ON THE NR 2 PYLON RT TORQUE BOX STRUCTURE AT NAC STA 305.  REPAIR IAW SRID 3-3851609808.

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