Anti-collision mechanism

On Sat, 1 Jan 2005 16:04:42 -0800, "Peter Duniho"
How many mid-air collisions of commercial airliners not equipped have there
been? Before the mandate, of course (I assume after the mandate there
haven't been any commercial airliners not equipped, right?).

Pete


Don't know the numbers for sure, but it used to be a fairly frequent
occurrence for airliners to hit small aircraft. Of course the press
always got it the other way around. That's why we have to have
transponders is certain airspace in small aircraft. The TCAS will see
our Mode C.

Seems like everything that ends up being mandated is because something
happened. If memory serves it was a Connie and DC-6 in the 50's that
ran in to each other over the Grand Canyon that caused the ATC system
as we know it. AA in Cali Columbia is why we have EGPWS. ValuJet is
why airliners have to have fire suppression in the baggage hold etc.

All commercial airliners are required to have TCAS II with Mode S
transponders; Commuters (up to 30 seats, I think) TCAS I



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