As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A TOUR FLIGHT, THE FIRE LIGHT ILLUMINATED IN FLIGHT AND THE PILOT PERFORMED A PRECAUTIONARY LANDING IN A FIELD. UPON INSPECTION OF THE FIRE DETECTION SYSTEM, WATER WAS FOUND IN THE CONNECTOR PLUG ON THE ENGINE DECK. WATER WAS REMOVED AND NO FURTHER PROBLEMS FOUND