# SDR ASAA2016041216373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2016
- Submitted: April 14, 2016
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 30,212 hours, 9,223 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Failed
- 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/ASAA2016041216373

## Discrepancy

WHILE ACCOMPLISHING T/C 78233001 EMERGENCY LIGHTING SWITCH, OPS CHECK AND BATTERY PACK FUNCTIONAL CHECK FOUND FWD LEFT/BATTERY PACK FAILED CHECK.  ACFT GROUNDED. R & R FWD LT BATTERY PACK POWER SUPPLY AND BATTERY PACK, IAW AMM 33-51-106. TEST MODE CHECKS GOOD.

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