# SDR YTRA202620720001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2026
- Submitted: July 21, 2026
- Operation: Air carrier
- Aircraft: [N675RL](https://openairdocs.org/aircraft/N675RL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53223
- Aircraft time: 3,731 hours
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Control Unit
- Part number: 1220
- Part serial: T02146
- Condition: Melted
- Location: Zone 100
- Part time: 9,999 hours
- Component: Pulse Light, 122024102
- Component part number: 122024102
- Stage of operation: CR
- How discovered: V
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YTRA202620720001

## Discrepancy

ON JULY 17, 2026,  CONDUCTING TRAINING FLIGHTS WHEN THE PILOT OBSERVED SMOKE IN THE COCKPIT ON THE COPILOT’S SIDE NEAR THE INSTRUMENT SHROUD AREA. THE PILOT SUSPECTED THE SOURCE MAY HAVE BEEN THE AIRCRAFT’S BATTERY COMPARTMENT AND MADE A PRECAUTIONARY LANDING AT LE GROS MEMORIAL AIRPORT.  UPON INSPECTION, MAINTENANCE OPENED THE BATTERY ACCESS PANEL AND IMMEDIATELY DETECTED AN ODOR CONSISTENT WITH OVERHEATED OR BURNED ELECTRONIC COMPONENTS. THE ODOR WAS TRACED TO THE PULSE LIGHT POWER SUPPLY LOCATED ON THE LEFT-HAND WALL OF THE BATTERY COMPARTMENT.  FURTHER INSPECTION REVEALED BLACK LIQUID LEAKING FROM THE PULSE LIGHT POWER SUPPLY. NO FLAME, CHARRING, OR EXCESSIVE EXTERNAL HEAT WAS PRESENT. BASED ON THE CONDITION OF THE UNIT, IT APPEARS TO HAVE EXPERIENCED AN INTERNAL FAILURE.  THE ELECTRICAL POWER SUPPLY WIRING TO THE PULSE LIGHT POWER SUPPLY WAS DISCONNECTED, AND THE SURROUNDING AREA WAS INSPECTED FOR ANY ADDITIONAL SIGNS OF SMOKE OR ELECTRICAL MALFUNCTION. NO FURTHER DISCREPANCIES WERE FOUND. AFTER APPLYING AIRCRAFT ELECTRICAL POWER, NO ADDITIONAL SMOKE, ODOR, OR ABNORMALITIES WERE OBSERVED.

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