# SDR CALA2020032000633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2020
- Submitted: March 20, 2020
- Operation: Air carrier
- Aircraft: [N496UA](https://openairdocs.org/aircraft/N496UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1845
- Aircraft time: 56,986 hours, 24,519 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 32145410
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2020032000633

## Discrepancy

EMERGENCY LIGHTING FAILS FOR 13WL UNIT FAULT. (A3NB-33-3-6012) O N HAECO LCQ NR 9294362 GENERATED BY V894373. REMOVED AND REPLACED BWL EPSU AND EPSU BETTERY IAW A320 AMM 33-5 1-38-000-001-A, 33-51-38-400-001-A, 33-51-38-000-002-A, 33-51-38 -400-002-A. OPS CHECKS GOOD IAW A320 AMM 33-51-00-710-001-A. PER FORMED BY V907990, INSP BY V061704. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1249114  SN OFF 4079 POWER SUPPLY, C  OFF 31-3350-9-9001 4079 ON 31-3350-9-9001 4228

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