# SDR IPXA11M66555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2011
- Submitted: May 11, 2011
- Operation: Air carrier
- Aircraft: [N251UP](https://openairdocs.org/aircraft/N251UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48744
- Aircraft time: 43,384 hours, 8,664 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Part number: APB74411
- Condition: Corroded
- Location: Wing Box
- 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/IPXA11M66555

## Discrepancy

INSPECTION TYPE:4C, CTR CABIN SUBFLOOR CTR WING UPPER PANEL APB7441-1 HAS CORROSION ON UPPER SURFACE BETWEEN STRINGER 17 & 18 AND BETWEEN X-102 AND X-106 4 AREAS.  REPAIRED CORROSION ON MAIN CABIN CTR WING BOX UPPER SKIN S17-S18 REF EO MD11-5730-42604-A AND STASA EA 011-5730-01-A3089 REV.IR

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