# SDR 2021F00013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2021
- Submitted: January 30, 2021
- Operation: General aviation
- Aircraft: [N725AN](https://openairdocs.org/aircraft/N725AN), registered now
- Make and model: Boeing 777323ER
- Aircraft serial: 41666
- Aircraft time: 31,366 hours, 3,479 cycles
- Engine: Ge GE90115B
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Part serial: 49972
- Condition: Defective
- Location: Zone 200
- Part time: 31,366 hours, 3,479 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/2021F00013

## Discrepancy

E-PATH EMERGENCY LIGHTS FROM L1, R1 AND L2, R2 DO NOT TEST.

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