# SDR AALA2020042969005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2020
- Submitted: April 29, 2020
- Operation: Air carrier
- Aircraft: [N754AN](https://openairdocs.org/aircraft/N754AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30262
- Aircraft time: 73,436 hours, 9,336 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: 12791
- Condition: Inoperative
- Location: Cabin
- 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/AALA2020042969005

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE - EMERGENCY LIGHT POWER SUPPLY M33094 INOPERATIVE. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT (EPSU) ASSEMBLY, M33094, PER AMM 33-51-06, OPERATIONAL TEST GOOD.

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