# SDR ASAA2023071243997

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2023
- Submitted: July 13, 2023
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 60,561 hours, 18,082 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Unknown
- Location: Main Cabin
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023071243997

## Discrepancy

WHILE PERFORMING T.C. #78233001. 1 EMERGENCY LT BATT PACK WAS INOP, FAILED CAPACITY FUNC CHECK. GROUNDED - YES. PER T.C. #78233001, REMOVED AND REPLACED M1673 IAW AMM 33-51-06-960-805. NEW BATT FROM STOCK CHECKS GOOD IAW AMM 33-51-00-720-801. T.C. COMPLETE. OK FOR SERVICE.

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