Re: This is a driver assist not an autopilot !
From what I understand, collision avoidance on aircraft is an extension to the transponder tech that identifies them to ground-based radar. Basically, if one plane hears another transponder nearby, it tracks where that transponder claims to be, does the maths, and adjust course if the track is too close.
IIRC there was an exploit mentioned very recently that relied on this to turn another aircraft, by repeatedly lying (slightly) about the location of the attacking transponder.
Biting the hand that feeds IT
