# SDR AALA20161001004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2016
- Submitted: October 3, 2016
- Operation: Air carrier
- Aircraft: [N790AN](https://openairdocs.org/aircraft/N790AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30251
- Aircraft time: 65,037 hours, 8,301 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Part serial: 100777
- Condition: Inoperative
- 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/AALA20161001004

## Discrepancy

DURING EMERGENCY LIGHTS TEST REQUIRED BY PS CHECK,  EMERGENCY PROXIMITY LIGHTS DID NOT TURN ON.  REMOVED AND REPLACED BATTERY PACK M33401 AND TESTED IAW AMM 33-51-06. SYSTEM GOOD FOR SERVICE.

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