# SDR YENA2018081520313

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2018
- Submitted: August 15, 2018
- Operation: Air carrier
- Aircraft: [N559JB](https://openairdocs.org/aircraft/N559JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1917
- Aircraft time: 63,119 hours, 22,306 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: No Test
- 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/YENA2018081520313

## Discrepancy

DURING HEAVY MAINTENANCE, THE LT AFT EMERGENCY LIGHT FAILED TO ILLUMINATE WITH THE SWITCH IN THE ARMED POSITION AND C/B PULLED.   REMOVED AND REPLACED THE BATTERY PACK & EPSU 13WL IAW AMM 31-51-38-00-001A, AND 33-51-38-400-001. SYSTEM OPS CHECKED GOOD IAW AMM 33-51-38-710-052B. OPEN

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