# SDR AALA2018051749035

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2018
- Submitted: May 17, 2018
- Operation: Air carrier
- Aircraft: N271AY
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 323
- Aircraft time: 80,865 hours, 12,357 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- Location: Emergency Lights
- 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/AALA2018051749035

## Discrepancy

DURING A A03 CHECK, EMERGENCY LIGHT TEST,  ACTIVE CLASS 1 FAULT CIDS 1335100 EXIT SIGNS, EMERGENCY POWER SUPPLY UNIT 3R 16WL.  REPLACED THE POWER SUPPLY IAW AMM 33-51-38, AND PERFORMED SATISFACTORY OPS CHECK.  THE AIRCRAFT WAS GROUNDED

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