Dual Transponders?

Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So they
go
tits up that often in flight where its necessary?

Scott

I dont know either, but when I was at the avionics shop picking up my plane
recently, there was a pressureized C-210 they had just starteding working and
let me peek inside. It had dual garmin 330 x-ponders, garmin 430,530 and an
MX20, it also had some other nifty stuff like a flight navigator and so on.


Scott Aron Bloom wrote:

Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So they
go
tits up that often in flight where its necessary?

Scott

Ive seen a couple of GA aircraft with em, and more than plenty of biz
jets that DONT.. I dont know the rhyme or reason. If I was limited on
panel space, Im sure a 2nd xponder would be low on the list.

Dave

Venus wrote:
I dont know either, but when I was at the avionics shop picking up my plane
recently, there was a pressureized C-210 they had just starteding working and
let me peek inside. It had dual garmin 330 x-ponders, garmin 430,530 and an
MX20, it also had some other nifty stuff like a flight navigator and so on.


Scott Aron Bloom wrote:


Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So they
go
tits up that often in flight where its necessary?

Scott

"Venus" wrote:
it also had some other nifty stuff like a flight navigator

What's that?
--
Dan
C172RG at BFM

How does a second transponder fit in to the datastream? Aren't they both
transmitting the same data at the same time on the same frequencies? Wont that
interefere with itself?

Jose

--
(for Email, make the obvious changes in my address)

"Teacherjh" wrote in message
...

How does a second transponder fit in to the datastream? Aren't they both
transmitting the same data at the same time on the same frequencies? Wont
that
interefere with itself?


The second would only be used if ATC reported a problem with the first one.

"Scott Aron Bloom" wrote in message
...
Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So
they
go
tits up that often in flight where its necessary?

Scott



I dunno, but maybe for the same reason some people carry along handheld
radios, pocket GPS, extra batteries, 2 or 3 pencils, yadda, yadda...

I noticed that ATP Inc. uses two transponders in their Seminole trainers.
My understanding is that because many of the ATP locations only have one
plane, no maintenance shop, and operate out of class C airports, a faulty
transponder would effectively ground the airplane, making a "Four day" multi
course a four week course.


"Scott Aron Bloom" wrote in message
...
Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So
they
go
tits up that often in flight where its necessary?

Scott

"Brad Z" wrote in message
news:MJKzb.301460$9E1.1527176@attbi_s52...

I noticed that ATP Inc. uses two transponders in their Seminole trainers.
My understanding is that because many of the ATP locations only have one
plane, no maintenance shop, and operate out of class C airports, a faulty
transponder would effectively ground the airplane, making a "Four day"
multi
course a four week course.


A faulty transponder COULD effectively ground the airplane. ATC can
authorize operations without a transponder, but there's no guarantee they
will.

This makes sense, but I was just looking on ASO at some senecas and about
10-15% had
dual xponders. But I was also seeing them on bonanzas and others....

Scott


"Brad Z" wrote in message
news:MJKzb.301460$9E1.1527176@attbi_s52...
I noticed that ATP Inc. uses two transponders in their Seminole trainers.
My understanding is that because many of the ATP locations only have one
plane, no maintenance shop, and operate out of class C airports, a faulty
transponder would effectively ground the airplane, making a "Four day"
multi
course a four week course.


"Scott Aron Bloom" wrote in message
...
Ok, Im not talking about the commercial carriers. But why would a
general
aviation plane have dual transponders? Why waste the panel space? So
they
go
tits up that often in flight where its necessary?

Scott