# SDR ASAA2025031856684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2025
- Submitted: March 19, 2025
- Operation: Air carrier
- Aircraft: [N260AK](https://openairdocs.org/aircraft/N260AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36349
- Aircraft time: 31,454 hours, 10,093 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- 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/ASAA2025031856684

## Discrepancy

DURING TC 78233001, CAPACITY CHECKS FAILED FOR EMERGENCY LIGHT BATTERY PACKS M1671 & M1673. GROUNDED - YES. BATTERY PACKS REMOVED & REPLACED FOR EMERGENCY LIGHT POWER SUPPLIES M1671 & M1673 REF AMM 33-51-00. OPS CHECKS GOOD.

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