# SDR AALA202009239015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2020
- Submitted: September 23, 2020
- Operation: Air carrier
- Aircraft: [N759AN](https://openairdocs.org/aircraft/N759AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 32638
- Aircraft time: 72,766 hours, 9,229 cycles
- System (JASC): [2560 · Emergency Equipment](https://openairdocs.org/jasc/2560)
- Part: Battery
- Part number: MN1604
- Condition: Inoperative
- Location: Door Assist
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202009239015

## Discrepancy

AIRCRAFT WAS GROUNDED.  L4 DOOR EMERGENCY POWER ASSIST SYSTEM BATTERY ASSEMBLY GREEN LIGHT DOES NOT FLASH GREEN WHEN ARMED.  REMOVED AND REPLACED DOOR 4L BACKUP BATTERIES, PER AMM 52-11-20.  GREEN LIGHT FLASHES WHEN ARMED.

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