Change of squawk code after landing

S

Sidney

New Member
I have experienced this a few times but never knew exactly what to do in this situation. I fly into a Class C or Class B airport and they have given me a squawk code. Approach control transfers me to tower when I have airport in sight. I'm still on the same squawk code. I land. I taxi to the FBO. Have lunch. Now I didn't change the squawk code at all. Because I never got any instruction to do so. Then I come back, start up and take instructions from clearance delivery and ground. They assign me a different squawk code now.

So from the time I landed to the time I started my engines back again and asked clearance and ground, my old squawk code has been there on my transponder. Won't this create a hazard? Was my code null and void automatically the time I landed? Should I change to VFR 1200 from engine start up to the radio call to clearance and ground because otherwise they will see my old squawk code won't they?

Sidney.
 
Sidney said:
I have experienced this a few times but never knew exactly what to do in this situation. I fly into a Class C or Class B airport and they have given me a squawk code. Approach control transfers me to tower when I have airport in sight. I'm still on the same squawk code. I land. I taxi to the FBO. Have lunch. Now I didn't change the squawk code at all. Because I never got any instruction to do so. Then I come back, start up and take instructions from clearance delivery and ground. They assign me a different squawk code now.

So from the time I landed to the time I started my engines back again and asked clearance and ground, my old squawk code has been there on my transponder. Won't this create a hazard? Was my code null and void automatically the time I landed? Should I change to VFR 1200 from engine start up to the radio call to clearance and ground because otherwise they will see my old squawk code won't they?

Sidney.
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Squawk Standby after landing, or Off. No need to have it on or using it on the ground,a nd yes its' void after landing. You'll receive another one when departing from clearance delivery, but since your transponder shouldn't be on when on the ground (OFF or STBY), ATC won't see anything anyway.

You're not taxiing around in low-viz, so you're not taking part in the ASDE for the airport, if so equipped.
 
Excellent! It makes sense. My transponder should be in OFF mode, then maybe STANDBY until clearance for take off from tower. Thanks for the reply.

Sidney.
 
MikeD said:
Squawk Standby after landing, or Off. No need to have it on or using it on the ground,a nd yes its' void after landing.
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Minor correction, some airports use ground radar coupled with squawk data with ground control. I haven't flown to many domestic airports in the last three years, but JFK and ATL both require it and some of the more modern European airports like say, Frankfurt.

"DELTA! You ahh ZUPPOSED to turn on ZEE transponUR during ZEE POOSHback!"
 
Doug Taylor said:
Minor correction, some airports use ground radar coupled with squawk data with ground control. I haven't flown to many domestic airports in the last three years, but JFK and ATL both require it and some of the more modern European airports like say, Frankfurt.

"DELTA! You ahh ZUPPOSED to turn on ZEE transponUR during ZEE POOSHback!"
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Yeah, I know DFW gets a little bitchy if its not on, even in VMC.
 
There are a few domestic airports that want them on. All the ones that I can think of (including MKE) will state the requirement on the ATIS.

I have vague recollection of hearing that much of ATC's equipment is set up to automatically blank out any transponders that are still on the ground in order to keep their displays from getting all cluttered. Still, it is best practice to go OFF or STBY after landing.
 
deek said:
Not all the time, I know at Houston Hobby they require Transponder on while you taxi.
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We always switched it off taxiing clear of the active there.....no complaints from twr/grd among the many times I was there. Maybe it was cause we were in a bright white and orange military aircraft :) Good BBQ though, and great conversation with the hanger flyers!
 
SteveC said:
There are a few domestic airports that want them on. All the ones that I can think of (including MKE) will state the requirement on the ATIS.

I have vague recollection of hearing that much of ATC's equipment is set up to automatically blank out any transponders that are still on the ground in order to keep their displays from getting all cluttered. Still, it is best practice to go OFF or STBY after landing.
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We can set filter limits since we don't have asde. Say the field elev. is 700ft, set the filter limits from 900ft-115000ft so even if it is on, we won't see you.

HD
 
I once heard in MCO, "Aircraft without your transponder on, I won't say your callsign if you turn it on quickly!".

I've always wanted to say, "If you know exactly who I am, I guess you don't really NEED the transponder, right?". But, that might get me a trip to the carpet . . .

:p
 
All I know is that at Southernjets, company policy is to turn the tranponder on when pushback commences, and only gets turned off when parked at the gate. (Or pulling into the gate.) This is required at all domestic airports. Doesn't matter what the WX is.
 
Well anyway since the old squawk code was cancelled automatically on landing, I can just even set VFR 1200 on startup and transponder on if necessary and push back. Yeah push back my small Piper Cadet PA28-161 :laff: !

The filter limit is a neat thing too.

Sidney.
 
braunpilot said:
Here's the list from the FAA's website if you wanna know where you have to operate your transponder in the ALT position during all times.

http://www.faa.gov/airports_airtraffic/technology/asde-x/
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:yeahthat: Airports with ASDE-X require transponders to be on mode C at all times. I was up in DTW's tower cab during snow removal season, and you can tell who has theirs on and who doesn't. All the snow removal equipment looked like little ants crawling around the runways while the aircraft have tags moving around the monitor. Pretty neat stuff.

RD
 
deek said:
Not all the time, I know at Houston Hobby they require Transponder on while you taxi.
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I work at Houston Hobby and it is on our ATIS that all aircraft to taxi with transponders on. We have ASDE-X with safety logic. If you stop squawk that will irritate the controller and if you change your squawk that can irritate controllers because now you may be on a 1200 code or something and the controller will glance back at the ASDE wondering who the hell this 1200 code is taxiing around the field...of course they will figure it out, but it just helps everything flow smooth and helps ground keep track of you. At a place like Hobby you want someone looking out for you when taxiing around as there are many many runway and taxiway crossings and even the old time pilots can get confused sometimes.

Also...FYI...with ADSE-X if you do stop your squawk we can actually tag you up manually from the tower and input any information that we would need anyways....even if you are squawking 1200 we can assign a callsign/type aircraft to your tag and it will adjust the size tag accordingly. If we put a 767, it will turn you yellow and make you bigger on the screen than the rest of the aircraft.

Also, having you tagged up on the ASDE-X will allow us to track your speed and altitude. We can't get that information from a primary target.

If you have your transponder on while taxiing we can make sure you are on the correct beacon assignment on the ground so we don't have to tell you to change it in the air when you are climbing out/in the turn, trying to change to departure. It also helps to ensure that your flight plan is valid so you don't get airborn and the STARS display is blinking "WHO" "WHO" and some beacon code...and everyone is scrambling to find out that your flight plan has droppped out and that we need to basically input this flight plan in about 30 seconds so we can hand you off to departure and they have all your info.

Overall, it helps make the system more efficient...and it definitely is safer for everyone involved, not just you, but the controller and other pilots that are flying around.

All in all...just keep it on, what does it hurt?
 
mtsu_av8er said:
I once heard in MCO, "Aircraft without your transponder on, I won't say your callsign if you turn it on quickly!".

I've always wanted to say, "If you know exactly who I am, I guess you don't really NEED the transponder, right?". But, that might get me a trip to the carpet . . .

:p
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That would just piss the controllers off and probably make you last in a line of departures that you may have been first or second.
 
mtsu_av8er said:
I once heard in MCO, "Aircraft without your transponder on, I won't say your callsign if you turn it on quickly!".

I've always wanted to say, "If you know exactly who I am, I guess you don't really NEED the transponder, right?". But, that might get me a trip to the carpet . . .

:p
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Center to wee plane "Cessna 110SS Say altitude."
CFI to Student "i'll give you five bucks to say 'altitude'..."
 
poser765 said:
Center to wee plane "Cessna 110SS Say altitude."
CFI to Student "i'll give you five bucks to say 'altitude'..."
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I always try to avoid things like that when I can...instead of "say parking" I'll say, whereya parking?

obviously, you can't avoid the "Say Altitude" as it is prescribed phraseology for controllers to use.

we have this controller...we rag on him all the time for it...

"No response necessary"...I mean come on? Is there really a need for that coming from ATC? That is seven syllables long....if you were just to say "COA752 traffic will be holding for you.".....COA752 will probably reply with a "roger"...(which i hate when pilots don't use their callsign...that is a whole nother issue...) or they will just reply with their callsign or something which will have taken a lot less time than saying "No response necessary." But this guy takes it to the next level...

"No response necessary, say parking."

"No response necessary, turn right at the high speed, taxi via taxiway mike 1, taxiway mike, taxiway delta, hold short of runway 30R on taxiway delta?" WTF? AHHHHHHHHHHHHHHH

Besides the pilot being obligated to read back hold short instructions, what the heck is with saying "taxiway" with every single taxiway (not requried by ATC...only stating "Runway" prior to the actual runway number is required).

The worst is this controller always giving scheiB to other controllers for not being as good as him...hahahaha

sorry to go off topic.
 
LawnGnome said:
I always try to avoid things like that when I can...instead of "say parking" I'll say, whereya parking?

obviously, you can't avoid the "Say Altitude" as it is prescribed phraseology for controllers to use.

we have this controller...we rag on him all the time for it...

"No response necessary"...I mean come on? Is there really a need for that coming from ATC? That is seven syllables long....if you were just to say "COA752 traffic will be holding for you.".....COA752 will probably reply with a "roger"...(which i hate when pilots don't use their callsign...that is a whole nother issue...) or they will just reply with their callsign or something which will have taken a lot less time than saying "No response necessary." But this guy takes it to the next level...

"No response necessary, say parking."

"No response necessary, turn right at the high speed, taxi via taxiway mike 1, taxiway mike, taxiway delta, hold short of runway 30R on taxiway delta?" WTF? AHHHHHHHHHHHHHHH

Besides the pilot being obligated to read back hold short instructions, what the heck is with saying "taxiway" with every single taxiway (not requried by ATC...only stating "Runway" prior to the actual runway number is required).

The worst is this controller always giving scheiB to other controllers for not being as good as him...hahahaha

sorry to go off topic.
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even further off topic...i hate it when pilots use the phonetic alphabet when talking to non pilots.

"yeah look for our plane at the gate...tail number is 069 Whiskey Delta"
"umm 069 and what about drinking whiskey on a Delta plane?"
 
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