# SDR AALA2020072049021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2020
- Submitted: July 21, 2020
- Operation: Air carrier
- Aircraft: [N784AN](https://openairdocs.org/aircraft/N784AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29588
- Aircraft time: 81,023 hours, 9,772 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Part serial: 47950
- Condition: Discharged
- Location: Emergency Light
- 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/AALA2020072049021

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE - BATTERY DISCHARGED, R1 DOOR EPSU (EMERGENCY POWER SUPPLY UNIT), M33094.  REMOVED AND REPLACED BATTERY PACK, EPSU M33094, PER AMM 33-51-06, OPERATIONAL CHECK GOOD.

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