# SDR DALA2025081906217

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2025
- Submitted: August 20, 2025
- Operation: Air carrier
- Aircraft: [N108DQ](https://openairdocs.org/aircraft/N108DQ), registered now
- Make and model: Airbus BD-500-1A10
- Registry model: [Airbus BD-500-1A10](https://openairdocs.org/model/airbus-canada-ltd-ptnrsp-bd-500-1a10) (OpenAirDocs)
- Aircraft serial: 50027
- Aircraft time: 15,632 hours, 7,307 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/DALA2025081906217

## Discrepancy

EXTERIOR EMERGENCY LIGHTS SYSTEMS - OVERWING EMERGENCY LIGHTS MEL NUMBER ADDED FOR DISPATCH RELEASE, LOG RE DEFERRAL REQUIRED. EMER LIGHT FAULT. R/R EPSU 3 & BATTERY PER AMP 33-51. DURING RE-INSTALL OF CEILING FAP DISPLAYED LT OWEED EMERGENCY LIGHTS FAULT. REINSTALLED ORIGINAL EPSU & BATTERY. INSTALLED NEW EPSU PER A220 AMP 33-51. INSPECTED LT OWEED LIGHTS , ON INSPECTION FOUND BONDING STRAPS IN UNSATISFACTORY CONDITION . CLEANED AND REINSTALLED BONDING STRAPS PER A220 AMP 20-25-01. INSPECTED WIRE BUNDLE AT CONNECTOR PS3P1, NO SHORT TO GROUNDS FOUND. REINSTALLED CEILING PANEL AT ROW 13. OPS CHECK GOOD AT THIS TIME. (LP# 6359874)

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