Transponder causing problems for Airlines on final ????

Okay, TCAS I vice TCAS II. Everyone should specify.

you did not specify...

BT

BULL... the pilot with Mode S gets the warning... but it reads all
Transponders..
BT

"EDR" wrote in message
...
In article et,
Steven P. McNicoll wrote:

There he was, holding for takeoff, ready to go, transponder alive, and
he
gets bitched at by the tower for "causing problems with the airliner's
nav
on final, switch transponder to standby."

Makes sense to anyone ???

Sounds like TCAS

TCAS only works with Mode-S transponders.

In article , Ray Bengen
wrote:

There he was, holding for takeoff, ready to go, transponder alive, and he
gets bitched at by the tower for "causing problems with the airliner's nav
on final, switch transponder to standby."

Makes sense to anyone ???

Makes sense, but it's incorrect. At least with the TCAS system I use,
when below about 1500' AGL, the confict resolution mode is disabled for
exactly that reason. The other transponders will paint on the screen,
but that's about all the ones on the ground will do.

--
Garner R. Miller
ATP/CFII/MEI
Manchester, CT =USA=

"Garner Miller" wrote in message Makes sense, but it's incorrect. At
least with the TCAS system I use,
when below about 1500' AGL, the confict resolution mode is disabled for
exactly that reason.

Most older TCAS will activate the RA mode upon rotation. Last month we had a
TA from a B-767 that had just cleared the runway as we were rotating for
take off. I don't know why it wasn't an RA.

D.

In article ,
"Capt.Doug" wrote:

"Garner Miller" wrote in message Makes sense, but it's incorrect. At
least with the TCAS system I use,
when below about 1500' AGL, the confict resolution mode is disabled for
exactly that reason.

Most older TCAS will activate the RA mode upon rotation.

really? that's a dumb design.

Last month we
had a
TA from a B-767 that had just cleared the runway as we were rotating for
take off. I don't know why it wasn't an RA.

possibly because of the increase in altitude separation.

--
Bob Noel

I frequently get TCAS traffic alerts referencing aircraft on the ground during
takeoffs and landings.

The TCAS will display traffic with an operating transponder regardless of the
type of transponder, i.e. mode C or S.

G. Lee