# SDR AALA201705169058

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2017
- Submitted: May 18, 2017
- Operation: Air carrier
- Aircraft: [N791AN](https://openairdocs.org/aircraft/N791AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30254
- Aircraft time: 67,206 hours, 8,612 cycles
- System (JASC): [5240 · Service Doors](https://openairdocs.org/jasc/5240)
- Part: Battery
- Part number: 285W0955102
- Part serial: D01594
- Condition: No Test
- Location: R4 Door Assist
- Part time: 21,017 hours, 2,392 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/AALA201705169058

## Discrepancy

EMERGENCY POWER ASSIST SYSTEM BATTERY ON THE R4 DOOR FAILED TO TEST.  REMOVED AND REPLACED EPAS BATTERY ASSEMBLY IAW AMM 52-11-20.  OPERATIONAL CHECKED GOOD.

---
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.