Originally Posted by juliet
re: RA at low level. TCAS will still give an RA at low level. It will not descend you into the ground as some like to believe, instead the low aircraft will be told to maintain its height while the other aircraft will be told to climb.
TCAS may or may not give RAs, depending on the mode settings! For Class G low level ops, TA is perfectly OK.
IF a student pilot were stupid enough to think he can get away with only looking out for TCAS targets, the sight of his microlight, glider or other non-squawker that passes close by will soon make him change his mind!