# SDR IPXA2025090125093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2025
- Submitted: September 3, 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): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Pressure Panel
- Part number: APB74451
- Condition: Corroded
- Location: Zone 500
- 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/IPXA2025090125093

## Discrepancy

MAJOR REPAIR.  MAIN CABIN AT CENTER WING L/H TUNNEL AT THE PRESSURE PANEL HAS CORROSION.  ATA 36-14 CENTER WING UPPER AFT SKIN CORROSION REPAIR BTWN XCW=101.850 AND XCW=110 AT REAR SPAR ACCOMPLISHED IN ACCORDANCE WITH UPS EO-94951-REQ1 REVISION 1 AND VT SAA EA # 011-5730-01-B0552 REV IR.

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