# SDR DALA2019020540756

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2019
- Submitted: February 5, 2019
- Operation: Air carrier
- Aircraft: N947DN
- 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: 53355
- Aircraft time: 50,027 hours, 40,773 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire
- Condition: Loose
- Location: Light Switch
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2019020540756

## Discrepancy

EMERGENCY LIGHTS WILL NOT TURN ON WITH SWITCH IN ON POSITION, (COCKPIT SWITCH). T/S PER WDM MD90 33-51-11. FOUND WIRE LOOSE ON RELAY R2-680. OPS CHECK GOOD PER MD90 AMM 33-51. (LP# 3911498)

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