1.
Helicopter with passengers wearing AU9-HT departs from.
2.
Helicopter suffers malfunction.
3.
Helicopter ditches and passengers escape, AU9-HT worn by each passenger auto-activates
transmitting 100mW 121.5MHz homing signal.
4.
In bound search and rescue aircraft and vessels quickly lock onto 121.5MHz homing signals and locate passengers. Tracking range to AU9-HT from SAR aircraft at altitude in excess of 30 miles and 2.5 to 3+ miles to a SAR boat at sea level.