# SDR ASAA2017092522036

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2017
- Submitted: September 27, 2017
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 11,995 hours, 3,974 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Failed
- Location: Cabin
- 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/ASAA2017092522036

## Discrepancy

FOUND AFT EMERGENCY OUTSIDE LIGHT INOP. GROUNDED - YES. REF WDM 33-51-14, NO 6VDC AT L732 AFT LT ESCAPE SLIDE EMERGENCY LIGHT. REPLACED M1673 EMERGENCY EXIT LIGHT BATTERY PACK, OPS NORMAL, REF AMM 33-51-06-960-805. EMERGENCY LIGHTS OPERATIONAL TEST GOOD, REF AMM TASK 33-51-00-710-801.

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