As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT EXPERINCED AN UNCOMMANDED EMERGENCY FLOAT INFLATION WHILE AIRCRAFT WAS ON THE GROUND AND UNATTENDED. THE INFLATION WAS INVESTIGATED BY THE OPERATOR AND A REPRESENTATIVE FROM BELL HELICOPTER. THE MANUFACTURER ATTRIBUTED THE STATIC INFLATION TO DEBRIS FOUND IN THE FLOAT INFLATION VALVES. THE VALVES (BELL PN 214-073-929-105) WERE THE IMPROVED VALVES INSTALLED IAW BELL TB 214ST-95-149.