# SDR DALA12014479259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2012
- Submitted: December 3, 2012
- Operation: Air carrier
- Aircraft: N959DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53529
- Aircraft time: 41,669 hours, 21,388 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Ground Wire
- Condition: Loose
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA12014479259

## Discrepancy

DURING SERVICE CHECK, MX FOUND THREE EMERGENCY LIGHTS IN AFT STAIRWELL INOPERATIVE.  FOUND ALL THREE GROUNDS LOOSE.  TIGHTENED GROUND NUTS. OPS CHECKS NORMAL IAW SWPM.

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