# SDR AALA20160803002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2016
- Submitted: August 3, 2016
- Operation: Air carrier
- Aircraft: [N778AN](https://openairdocs.org/aircraft/N778AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29587
- Aircraft time: 71,257 hours, 8,641 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Part serial: 16803
- Condition: No Test
- Location: Emergency Lights
- Part time: 48,056 hours, 5,623 cycles
- 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/AALA20160803002

## Discrepancy

EMERGENCY POWER SUPPLY M33404 FAILED DURING TEST.  REMOVED AND REPLACED THE POWER SUPPLY IAW AMM 33-51-06. OPS CHECKED NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.