From DAVID HARPER
Julian Moxon describes the transponders used in the American Traffic
Alert and Collision Avoidance System and mentions that ‘not surprisingly,
mountains are not equipped with them’.
But why shouldn’t they be? Only a limited number of mountains would
need to be so equipped – those on the flight paths into airports – at a
cost which should be much lower than the ‘millions of pounds’ Moxon estimates
to develop alternative solutions.
David Harper London
