# SDR ASAA2023022242609

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2023
- Submitted: March 29, 2023
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 54,488 hours, 15,876 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Failed
- Location: Main Cabin
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023022242609

## Discrepancy

EMERGENCY LIGHT SYSTEM BATTERY PACK FAILED CAPACITY CHECK FOR BATTERIES M1670, M1671, M1672, M1673. GROUNDED - YES. REPLACED BATTERY PACKS M1670, M1671, M1672 AND M1673 IAW ASA B737NG MM 33-51-06-960-805, OP CHECK GOOD ASA B737NG MM 33-51-06-960-805.

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