# SDR MASA2009110400327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2009
- Submitted: December 2, 2009
- Operation: Air carrier
- Aircraft: [N37178](https://openairdocs.org/aircraft/N37178), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7178
- Aircraft time: 32,877 hours, 24,214 cycles
- System (JASC): [2460 · DC Power Distribution System](https://openairdocs.org/jasc/2460)
- Part: Relay
- Condition: Defective
- Location: Electrical Sys
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MASA2009110400327

## Discrepancy

ASH FLT 2918 PHX - COS.  EMERGENCY LIGHTS COME ON WITH FLIGHT DECK SWITCH IN ARMED POSITION.  MX REPLACED ESSENTIAL BUS RELAY.

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