# SDR DALA2025072805666

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2025
- Submitted: July 28, 2025
- Operation: Air carrier
- Aircraft: [N568DZ](https://openairdocs.org/aircraft/N568DZ), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0024
- Aircraft time: 22,573 hours, 2,662 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: No Test
- Location: Zone 200
- 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/DALA2025072805666

## Discrepancy

WORKING J/C 0591-0201 STEP 10 OPS TEST OF EMERGENCY POWER SUPPLY UNIT BATTERY CAPACITY. TEST FAILED POWER SUPPLY UNIT AT DOOR 1L , DOOR 2L, AND DOOR 4RT. REPLACED DOOR 2L POWER SUPPLY UNIT AND BATTERY PER A350 AMM 33- 51 CHECKS GOOD. (244523). L1 DOOR BATTERY REPLACED. (244523) CHECKS GOOD. DOOR 4RT EXTERIOR LIGHTING. R/R RT 4 DOOR EXTERIOR LIGHT PER A350 AMM 52-12. OPS CK NML. OK FOR SVC. (LP# 7326692)

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