# SDR ASAA2025062358949

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2025
- Submitted: June 25, 2025
- Operation: Air carrier
- Aircraft: [N267AK](https://openairdocs.org/aircraft/N267AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60581
- Aircraft time: 29,748 hours, 9,562 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: No Test
- Location: Zone 200
- 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/ASAA2025062358949

## Discrepancy

REF T/C 78233001: EMERGENCY LIGHT BATTERY PACK M1673 FAILS CAPACITY CHECK. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK AT EMERGENCY LIGHT POWER SUPPLY M1673 PER AMM 33-51-06. POWER SUPPLY OP CHECKS GOOD.

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