# SDR U2RA201610020001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2016
- Submitted: October 4, 2016
- Operation: Air carrier
- Aircraft: [N952CA](https://openairdocs.org/aircraft/N952CA), registered now
- Make and model: Boeing 747428
- Aircraft serial: 25238
- Aircraft time: 89,903 hours, 13,306 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Part serial: 60993
- Condition: Discharged
- Location: Emergency Lights
- Part time: 89,903 hours, 13,306 cycles
- 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/U2RA201610020001

## Discrepancy

UPPER DECK, AISLE, STAIRWAY, AND COCKPIT EMERGENCY LIGHTS DO NOT OPERATE DURING TEST.  REMOVED AND REPLACED THE BATTERY PACK IAW AMM 33-51-04. OPS TEST SATISFACTORY.

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