Transponder causing problems for Airlines on final ????

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 ???

Ray

"Ray Bengen" wrote in message
news

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

I agree.. sounds like the aircrafts on final's TCAS lit off when it picked
up the transponder of the aircraft waiting to depart.. sitting right next to
the runway..

BT

"Steven P. McNicoll" wrote in message
nk.net...

"Ray Bengen" wrote in message
news

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

I think the tower was a bit harsh then because at several large airports ALL
aircraft are asked to keep the transponder on during ground operation all the
way to/from the gate. TCAS systems have a mode which gets rid of most unwanted
warnings for takeoffs and landings. There is nothing at all wrong with turning
the transponder on when approaching #1 for takeoff, it's better than forgetting
to turn it on at all. If it is an ongoing problem at that airport try calling
the folks in the tower to find out why and how they would like transponders
handled on their field.

I was taught the old "Lights, Camera, Action" thingy when crossing the
hold line onto the runway for takeoff.


"PS2727" wrote in message
...
I think the tower was a bit harsh then because at several large airports
ALL
aircraft are asked to keep the transponder on during ground operation all
the
way to/from the gate. TCAS systems have a mode which gets rid of most
unwanted
warnings for takeoffs and landings. There is nothing at all wrong with
turning
the transponder on when approaching #1 for takeoff, it's better than
forgetting
to turn it on at all. If it is an ongoing problem at that airport try
calling
the folks in the tower to find out why and how they would like
transponders
handled on their field.

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.

"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.

Why wouldn't that be the case here?

"EDR" wrote in message
...

TCAS only works with Mode-S transponders.


Negative.

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=

In article , EDR
wrote:

Sounds like TCAS

TCAS only works with Mode-S transponders.

Who told you that? A Mode C transponder looks the same on a TCAS
screen as Mode S. The only difference is that two Mode-S-equipped
airplanes are able to coordinate a TCAS maneuver (so both airplanes
won't get told "climb" and climb into each other).

TCAS will interact and with Mode C transponders just fine, and will
even show and give a traffic advisory for aircraft with no altitude
encoding at all.

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