# SDR DXTA2022051661790

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2022
- Submitted: May 16, 2022
- Operation: Air carrier
- Aircraft: [N807QS](https://openairdocs.org/aircraft/N807QS), registered now
- Make and model: Cessna 120
- Registry model: [Cessna 120](https://openairdocs.org/model/cessna-120) (OpenAirDocs)
- Aircraft serial: 7000032
- Aircraft time: 1,617 hours, 939 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: CBS28L
- Part serial: 5421M
- Condition: Abnormal
- Location: Zone 100
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2022051661790

## Discrepancy

CABIN EMERG LIGHT: CABIN EMERGENCY LIGHTS FLICKER AND EXTINGUISH WHEN TESTING. ONCE SHIPS POWER IS APPLIED EMERGENCY LIGHTS WORK FINE. ONCE SHIPS BATTERIES ARE TURNED THE OFF , LIGHTS FLICKER AND THEN EXTINGUISH WITH EMERGENCY LIGHTS SWITCH IN THE ON POSITION. // SIGNOFF//  REMOVED AND REPLACED BOTH AFT EMERGENCY BATTERY PACK REF. C-700 AMM 33-50-05. PERFORMED OPERATIONAL TEST OF CABIN EMERGENCY LIGHTS REF. C-700 AMM 33-50-00. OPS CHECK GOOD AT THIS TIME WITH NO FURTHER DEFECTS NOTED

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