# SDR DXTA2021072345660

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2021
- Submitted: July 26, 2021
- Operation: Air carrier
- Aircraft: [N570QS](https://openairdocs.org/aircraft/N570QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0125
- Aircraft time: 3,410 hours, 2,243 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: CBS281
- Part serial: 2086M
- Condition: No Test
- 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/DXTA2021072345660

## Discrepancy

CABIN EMERG LIGHT: DURING THE CABIN EMER LIGHTS TEST PRIOR TO START, THE ISLE LIGHTS UNDER SEATS 5 AND 8 WOULD NOT ILLUMINATE.  ALL OTHER LIGHTS FUNCTIONAL.  WITH APU POWER ON, ALL ISLE LIGHTS ILLUMINATED (BULBS FUNCTIONAL). // SIGNOFF// REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT UNDER CABIN SEAT #8 WITH A CUSTOMER SUPPLIED REPAIRED PART. PERFORMED SATISFACTORY OPERATIONAL CHECKS OF EMERG. LIGHTING SYSTEM 1/A/W CE-680A AMM 33-50-06.

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