# SDR ASAA2023062243918

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2023
- Submitted: July 11, 2023
- Operation: Air carrier
- Aircraft: [N524AS](https://openairdocs.org/aircraft/N524AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35195
- Aircraft time: 45,744 hours, 16,173 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Failed
- Location: Main Passenger C
- 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/ASAA2023062243918

## Discrepancy

EMERGENCY LIGHT SYSTEM POWER SUPPLY (M1673) FIALED OPERATIONAL TEST. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LISHT SYSTEM POWER SUPPLY (M1673) PERFORMED. OPERATIONAL TEST. OPS TEST GOOD IAW B737-NG AMM 33-51-06-960-806.

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