# SDR ASAA2017041420466

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2017
- Submitted: April 17, 2017
- Operation: Air carrier
- Aircraft: N320AS
- Make and model: Boeing 737990
- Aircraft serial: 33680
- Aircraft time: 48,935 hours, 18,949 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- 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/ASAA2017041420466

## Discrepancy

WHILE ACCOMPLISHING T/C # 78233001, LT & RT AFT OVERWING EXIT EMERGENCY LIGHT (EXTERIOR).  LIGHT WENT OUT BEFORE TIME LIMIT.  ACFT GROUNDED. REPLACED THE POWER SUPPLY BATTERY PACKS M1670 AND M1671 IAW AMM 33-51-06-960-805, OPS CHECKED GOOD.

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