Tactical Mid-Air Collision Avoidance (TMACA)

The Tactical Mid-Air Collision Avoidance (TMACA) system is a proven solution to prevent collisions during helicopter tactical mission and formation flights. Helicopters equipped with TMACA are netted to each other in a "system envelope" arrangement. The system can be used for both military and civilian helicopter fleets.

The system envelope monitors all helicopters on the network for unexpected traffic with an 15 second or less impact flight path, a 40-meter or less gap between helicopters or a hover-landing collision situation. The network calculates collision conditions using a Dynamic High Trajectory Evaluation algorithm and automatically alerts the pilot with recommended avoidance measures if a potential collision is predicted.

The system's components include a Global Positioning System, data link and radio altimeters to send data to a monitoring network that tracks the movement and location of all helicopters. It records flight data building a picture of "near misses" and gives investigators a means to prevent recurrences according to lessons learnt.

Tactical Mid-Air Collision Avoidance (TMACA) System

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