As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LANDING LIGHT BULBS ARE CONTINUALLY REQUIRING CHANGING. THIS BULB ONLY LASTED FOR 1.1 FLIGHT HOURS WITH 10 NIGHT LANDINGS. THE PREVIOUS BULB LASTED FOR 19 FLIGHT HOURS. OPERATING 3 EACH AS350B HELICOPERS, APPEAR TO BE AVERAGING BETWEEN 20 AND 30 FLIGHT HOURS PER BULB. SUBMITTER STATED THE CONFINED AREA OF THIS INSTALLATION DOESN'T APPEAR TO HAVE ENOUGH COOLING AIR FLOW.