# SDR UPS08851568

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2008
- Submitted: January 30, 2008
- Operation: Air carrier
- Aircraft: N852UP
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46052
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Circuit Breaker
- Condition: Inoperative
- Location: Emergency Lights
- 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/UPS08851568

## Discrepancy

ON PREFLIGHT, EMERGENCY LIGHTS WILL NOT DISARM.  FOUND EMERGENCY EXIT LIGHT CONTROL C/B BAD.  REMOVED AND REPLACED SAME PER DOUGLAS STANDARD MANUAL 20-60-01.  SYS OPS CKS NORMAL PER MM 33-50-02-2.  OK FOR SERVICE.

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