A320 Mode S
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Joined: Apr 2006
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From: Asia
A320 Mode S
For the airbus experts
If the transponder is left in Auto after parking, does the mode S keep on transmitting non-stop?
FCOM 1 is not specific about this issue, and every pilot has a different opinion.
some say: live it in Auto, it's not an issue!
some others: put it on SBY because mode S is transmitting!
not to confuse with the other modes which are connected to the nose gear or air/ground logic.
If the transponder is left in Auto after parking, does the mode S keep on transmitting non-stop?
FCOM 1 is not specific about this issue, and every pilot has a different opinion.
some say: live it in Auto, it's not an issue!
some others: put it on SBY because mode S is transmitting!
not to confuse with the other modes which are connected to the nose gear or air/ground logic.
Joined: Jun 2001
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From: Blighty
IIRC, it starts transmitting as soon as the ATSU detects you have departed and stops when it detects you have blocked on. We leave ours in Auto all the time.
This is confirmed by the fact that when we had 3 knots as the parameter for the recording of the Out time, we used to get ATC asking us to switch the transponder on if it was a slow push. Now we use the park brake off as the parameter, we don't get the ATC requests.
This is confirmed by the fact that when we had 3 knots as the parameter for the recording of the Out time, we used to get ATC asking us to switch the transponder on if it was a slow push. Now we use the park brake off as the parameter, we don't get the ATC requests.
Joined: May 2000
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From: Glorious West Sussex
some say: live it in Auto, it's not an issue!
some others: put it on SBY because mode S is transmitting!
some others: put it on SBY because mode S is transmitting!
Thread Starter
Joined: Apr 2006
Posts: 529
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From: Asia
thanks guys
Dan, according to that, there's no need to move it from auto if its linked to the ATSU block. though our S.O.P. was recently amended to set it on sby on parking.
out of curiosity I will place the following question.
Is the latest A320 ATCRBS Mode S available to the controller, when the ATSU has blocked off?
cheers.
Dan, according to that, there's no need to move it from auto if its linked to the ATSU block. though our S.O.P. was recently amended to set it on sby on parking.
out of curiosity I will place the following question.
Is the latest A320 ATCRBS Mode S available to the controller, when the ATSU has blocked off?
cheers.
Joined: Mar 2004
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From: Europe
What about airports like LHR where the local rules specify that "After parking, the Mode A code 2000 must be set before selecting OFF or SBY."
Assuming (the documentation is really vague on this, as already mentioned) the A320 transponder goes automatically to SBY at "ATSU in" or parking brake/engine shutdown/whatever, does it make a difference to LHR ATC whether you enter 2000 before that event or afterwards? ("before" requires to change the code when approaching the gate, which is probably not the best time to play with the transponder).
Assuming (the documentation is really vague on this, as already mentioned) the A320 transponder goes automatically to SBY at "ATSU in" or parking brake/engine shutdown/whatever, does it make a difference to LHR ATC whether you enter 2000 before that event or afterwards? ("before" requires to change the code when approaching the gate, which is probably not the best time to play with the transponder).
Thread Starter
Joined: Apr 2006
Posts: 529
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From: Asia
The A320 mode A switches off at nose gear touchdown, as we keep the knob in auto mode, but mode S is still transmitting after landing and taxiing, but does it stop when the ATSU blocks on? this is what is suggested by Dan.
I don't know were I can find something writen about it.
I don't know were I can find something writen about it.
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Greetings
Mode S is also used by ADS and is entended to be used on the ground on different applications, for taxy runway incursion protection ....
so my guess is that mode S is available and used when an applcation (such as ADS) requires it
Mode S is also used by ADS and is entended to be used on the ground on different applications, for taxy runway incursion protection ....
so my guess is that mode S is available and used when an applcation (such as ADS) requires it
