# SDR ERKR2016F00023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2015
- Submitted: November 4, 2015
- Operation: General aviation
- Aircraft: [N411SN](https://openairdocs.org/aircraft/N411SN), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48411
- Aircraft time: 70,733 hours, 30,844 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar Cap
- Part serial: 48411
- Condition: Corroded
- Location: Lt Wing
- Part time: 70,733 hours, 30,844 cycles
- 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/ERKR2016F00023

## Discrepancy

LEFT WING UPPER T/E SKIN PANEL CORRODED AT WS XW670 EXTENDING INBD ALONG THE UPPER WING REAR SPAR UPPER CAP ON FORWARD SIDE OF CHORD BETWEEN WING UPPER SKIN AND CHORD AT BS 772.5.

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