Anyone Own a Garmin GTX 327 Transp??

[[email protected]]

Our 327 is a few weeks old. According to the manual, the unit is
supposed to have Auto Mode switching from STBY to ALT on takeoff, and
then back again on landing. The takeoff part works fine....as soon as
the wheels leave the ground, the unit will switch to ALT and the timers
will start.

But it doesn't return to STBY on landing. That has to be done
manually. I've fiddled with the Configuration Menu abit according to
the manual and changed the Delay Timer to 0, but nothing seems to make
a difference.

What am I missing??? And I'm not sure what the Delay Timer is...is it
in minutes? seconds? For what? I've posted a question to garmin.com
but thought I would ask here as well.

THanks!!

--Jeff

[Peter R.]

> wrote:

> But it doesn't return to STBY on landing. That has to be done
> manually. I've fiddled with the Configuration Menu abit according to
> the manual and changed the Delay Timer to 0, but nothing seems to make
> a difference.
>
> What am I missing???

I have the GTX330, which has the same feature, and it also does not
automatically return to standby at the conclusion of a flight. I haven't
yet bothered to investigate the reason, so if you receive an answer on the
Garmin forum, please post the reply here.


--
Peter

[Javier]

Peter R. wrote:
> > wrote:
>
>> But it doesn't return to STBY on landing. That has to be done
>> manually. I've fiddled with the Configuration Menu abit according to
>> the manual and changed the Delay Timer to 0, but nothing seems to make
>> a difference.
>>
>> What am I missing???
>
> I have the GTX330, which has the same feature, and it also does not
> automatically return to standby at the conclusion of a flight. I haven't
> yet bothered to investigate the reason, so if you receive an answer on the
> Garmin forum, please post the reply here.

I've the GTX330, connected to a GNS430. I've a fixed gear airplane
(Cessna 182) so the switch from sby to active and back is done based on
groundspeed. No problems so far, I've had this combo for two years now.

-jav

[Javier]

Peter R. wrote:
> > wrote:
>
>> But it doesn't return to STBY on landing. That has to be done
>> manually. I've fiddled with the Configuration Menu abit according to
>> the manual and changed the Delay Timer to 0, but nothing seems to make
>> a difference.
>>
>> What am I missing???
>
> I have the GTX330, which has the same feature, and it also does not
> automatically return to standby at the conclusion of a flight. I haven't
> yet bothered to investigate the reason, so if you receive an answer on the
> Garmin forum, please post the reply here.

I've the GTX330, connected to a GNS430. I've a fixed gear airplane
(Cessna 182) so the switch from sby to active and back is done based on
groundspeed. No problems so far, I've had this combo for two years now.

-jav

[Ray Andraka]

wrote:
> Our 327 is a few weeks old. According to the manual, the unit is
> supposed to have Auto Mode switching from STBY to ALT on takeoff, and
> then back again on landing. The takeoff part works fine....as soon as
> the wheels leave the ground, the unit will switch to ALT and the timers
> will start.
>

>
Not a good thing at an airport that has the new ground radar. KPVD,
for example requires the transponder be on while on any active part of
the airport.

[Thomas Borchert]

> What am I missing??? And I'm not sure what the Delay Timer is...is it
> in minutes? seconds? For what?
>

Our 330 doesn't go to standby, but rather to a mode called GND for
ground. Not quite sure what the difference is, but I think I have read
somewhere it is a special mode S thing telling ATC you're on the ground.

The delay timer is for you to still transmit an active transponder signal
as logn as you are still on the runway, taxiing off it. Default is 30
seconds, I think. Of course, the automatic on function doesn't give you
that option when taxiing onto the runway for take-off, something that
bother me a little.

--
Thomas Borchert (EDDH)

[Thomas Borchert]

Ray,

> KPVD,
> for example requires the transponder be on while on any active part of
> the airport.
>

"on" as in ALT?

--
Thomas Borchert (EDDH)

[Peter R.]

Thomas Borchert > wrote:

> Our 330 doesn't go to standby, but rather to a mode called GND for
> ground. Not quite sure what the difference is, but I think I have read
> somewhere it is a special mode S thing telling ATC you're on the ground.

Yep, my mistake. My unit also goes into GND mode.

What I was recalling is that the TIS traffic call-outs occur while in GND
mode (assuming at an airport providing TIS). To stop the call-outs while
on the ground, I would hit the standby mode during taxi. This is where I
was confusing my issue with the OP 's issue.

--
Peter

[Ray Andraka]

Thomas Borchert wrote:
> Ray,
>
>
>>KPVD,
>>for example requires the transponder be on while on any active part of
>>the airport.
>>
>
>
> "on" as in ALT?
>
Yes. They want the transponder replying with your assigned squawk code.
The mode 3/A setting is probably OK too, but stdby is not.

[[email protected]]

Garmin hasn't yet responded to my question posted to their customer
service site. Thanks for clarifying the purpose of the Delay Timer.
It makes sense.

I live in the Washington DC area and fly in the dreaded ADIZ. You must
have a valid squawk before takeoff and have it on until wheels touch
down. If you accidently hit 1200 before that, you get a
not-so-friendly call from the TSA/FAA/FBI/CIA/NSA.... Pilots have been
given warnings and lost tickets for all kinds of transponder
glitches....mechanical and human. But enough of that!!

My 327 is NOT linked to a panel GPS. So now I'm wondering how it knows
you've landed to switch to STBY. A steady pressure altitude could mean
straight and level flight!

--Jeff

[Thomas Borchert]

> My 327 is NOT linked to a panel GPS. So now I'm wondering how it knows
> you've landed to switch to STBY.
>

If it isn't, and it isn't connected to a gear switch, it will not know
anything about landings, AFAIK. Take-off is easier, since it is the first
major altitude change since the unit has been switched on. A landing,
however, is the same as levelling off after a descent (to a very low
altitude, mostly, but so what?).

--
Thomas Borchert (EDDH)

[[email protected]]

Garmin Tech Support responded to my email.

You are correct...without a GPS or something else, the 327 has no idea
whether you've landed or are flying straight and very level. So it
will switch from STBY to ALT on takeoff, but it will not go the other
way on landing. That change will have to be done manually.

I think all of that extra "work" of pushing the STBY button after
landing is more than enough justification to upgrade my Warrior and
spend $15K on an in-panel GPS! :-)

--Jeff

[Jay Honeck]

> I think all of that extra "work" of pushing the STBY button after
> landing is more than enough justification to upgrade my Warrior and
> spend $15K on an in-panel GPS! :-)

Ooooooo. I like the way you think...

;-)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Thomas Borchert]

> to upgrade my Warrior and
> spend $15K on an in-panel GPS!
>

While I agree with your basic thinking <g>, you don't really have to
spend that much anymore on a 430.

--
Thomas Borchert (EDDH)

[Newps]

>>I think all of that extra "work" of pushing the STBY button after
>>landing is more than enough justification to upgrade my Warrior and
>>spend $15K on an in-panel GPS! :-)

Especially when there is no need to go to STBY in the first place.