# SDR IPXA2025081524093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2025
- Submitted: August 15, 2025
- Operation: Air carrier
- Aircraft: [N274UP](https://openairdocs.org/aircraft/N274UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48575
- Aircraft time: 78,862 hours, 17,642 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Pressure Panel
- Part number: APB74451
- Condition: Corroded
- Location: Zone 200
- 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/IPXA2025081524093

## Discrepancy

MAIN CABIN AT CENTER WING L/H TUNNEL AT THE PRESSURE PANEL HAS CORROSION.   VERIFIED STEP 7 C/W IAW UPS RII GMM 04-02.

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