# SDR PCAA0308099

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2003
- Submitted: August 18, 2003
- Operation: Air carrier
- Aircraft: [N839EX](https://openairdocs.org/aircraft/N839EX), registered now
- Make and model: Dhav DHC8102
- Aircraft serial: 226
- Aircraft time: 32,404 hours, 36,662 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Diode
- Condition: Failed
- Location: Emergency Light
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/PCAA0308099

## Discrepancy

DURING ROUTINE MAINTENANCE VISIT FOUR RED FLOOR EMERGENCY LIGHTS AT ROW 4 WERE FOUND TO BE INOPERATIVE. ALSO, FORWARD AND AFT LEFT AND RIGHT UPPER SIDEWALL EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE. EMERGENCY LIGHTING SYSTEM WAS TROUBLESHOT AND A BURNT WIRE ON A POST CONNECTOR FOR POSITION 500 POWER SUPPLY WAS FOUND. POWER SUPPLY WAS REPLACED AT POSITION 500. ALSO FOUND WAS A BAD DIODE FOR THE RED FLOOR LIGHTS. DIODE WAS REPLACED. ALL EMERGENCY LIGHT BATTERIES WERE REPLACED DURING TROUBLESHOOTING.  OPERATIONAL CHECK OF ALL EMERGENCY LIGHTS WAS GOOD. AIRCRAFT RETURNED TO SERVICE.

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