On Mar 10, 11:41 am, "Andrew Sarangan" wrote:

Forgive me for asking, but if I can't raise tower and TCAS is going
off, and the CDI shows I still have not intercepted the localizer, my
first priority would be to fly the airplane on the last assigned
heading and figure out if the TCAS warning is real. Attempting to go
back to the last assigned frequency will be a low priority item, no?- Hide quoted text -

Andy, every situation is a little different but I really dont think
this story is plausible on several accounts.Let me answer your
question in several parts.First, in the event of lost comm you would
join the course you were being vectored for.The A340 crew would have a
flag on the ILS (The CDI changes color so this wouldnt go unnoticed)
but, the LNAV course to the airport would still be depicted on the ND
(I know every airline does things a little differently but I am sure
at least one of the pilots would be required to be in the MAP mode
during an approach).Another thing is that given the circumstances in
the story, the TCAS would probably issue 3 or 4 RAs in this timeframe
(In both jets no less).We are required to respond to an RA (and answer
to ATC later).I dont know how you would figure out if a TA or RA is
false. Also, if the pilots can see an explosion on the airport, it is
highly unlikely they would overshoot final while looking right at
it.The last part of your post is right on the $$$, they would aviate
and then communicate.
KM