trickijedi
Posts: 3201
Joined: Sun May 13, 2001 4:35 pm

"atis Has Been Changed To Tango"

Wed Feb 13, 2002 5:56 am

When ATC says "ATIS has been changed to ...." or "ATIS is now..." what exactly does this transmission mean and what does it mean for the pilots?

Does this strictly mean that there has been a significant weather change?


Thanks.
Its better to be on the ground wishing you were in the air than be in the air wishing you were on the ground. Fly safe!
 
PPGMD
Posts: 2398
Joined: Sun Sep 30, 2001 5:39 am

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 6:08 am

Possibly it means a weather change but in most cases it just simply means that the new ATIS is out, with new information and the pilots are advised to listen to it.
At worst, you screw up and die.
 
jsuen
Posts: 204
Joined: Tue Aug 14, 2001 2:36 pm

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 6:08 am

The Automatic Terminal Information Service is a recorded/computer generated message that gives weather and airport information. Each recording is given a phonetic alphabet (Alpha, Bravo, Charlie...) so pilots know which version they have. If ATC says ATIS has been changed to Tango, flight crews should listen to ATIS again if they don't have the Tango version. Sometimes you'll hear "Carrier 123 with Bravo". This tells the controller that the crew already has ATIS Bravo and the controller doesn't need to go over that information, unless it has been updated to Charlie in the meantime.
 
bio15
Posts: 1048
Joined: Fri Mar 23, 2001 8:10 am

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 7:40 am

No, there doesn't have to be a great change in weather for an ATIS update. Just a change in QNH (barometric pressure) could represent altimeter deviations of a hundred feet or so, which must be promplty reported.

-bio
 
H. Simpson
Posts: 933
Joined: Sat Mar 10, 2001 7:30 am

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 8:49 am

by the way, if there is significant weather change(thunderstorms...) the controller will actually read out a very brief weather report over the ATC frequencies(ie. approach, departure), not necessary on ATIS.
 
Woodreau
Posts: 1182
Joined: Mon Sep 24, 2001 6:44 am

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 10:47 am

At least in the US, ATIS msgs are changed at least every hour, even though there is no significant change in the wx. ATIS can change if they change runways, announce ILS outages, or ramp/taxiway closures, etc.

Cheers  Smile
Woodreau
Bonus animus sit, ab experientia. Quod salvatum fuerit de malis usu venit judicium.
 
SophieMaltese
Posts: 2023
Joined: Sat Feb 17, 2001 2:08 pm

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 2:34 pm

It just means that the ATIS information has been updated as it is every ten minutes if I'm not mistaken.
 
KAUSpilot
Posts: 1659
Joined: Mon Jan 28, 2002 2:15 pm

RE: "atis Has Been Changed To Tango"

Wed Feb 13, 2002 3:23 pm

The ATIS is usually only updated hourly, unless something happens that needs to be broadcasted before the hour is up.

Here in austin, they'll often make a new atis broadcast for "birds on and in vicinity of airport". Other reasons would be a wind shift (especially one major enough to change the active runways).

If the visibility is suddenly reduced due to precipitation, or low cielings suddenly move in, you'll also get a quick change on the ATIS.

Sometimes, like tonight, you'll listen to the ATIS, and right after you switch frequencies to go on approach ATC will put a new atis on. So you'll say "approach, cessna NXXXX at XXXX over XXXX with uniform", and ATC might say "cessna NXXXX Squawk XXXX, fly heading XXX, information victor is now current" so then you'd listen to the ATIS again to get victor.
 
Contact_tower
Posts: 534
Joined: Mon Sep 17, 2001 4:05 am

RE: "atis Has Been Changed To Tango"

Thu Feb 14, 2002 4:01 am

ATIS has to be updated every 30 minutes, it's international regulation (ICAO).
Once again i think the FAA has disregarded it...... Big grin
 
KAUSpilot
Posts: 1659
Joined: Mon Jan 28, 2002 2:15 pm

RE: "atis Has Been Changed To Tango"

Thu Feb 14, 2002 6:06 am

Yeah, you're right contact. I remember calling the atis on the phone every 10 or 15 minutes for an hour one time and it was the same atis identifier every time.
 
PPGMD
Posts: 2398
Joined: Sun Sep 30, 2001 5:39 am

RE: "atis Has Been Changed To Tango"

Thu Feb 14, 2002 6:30 am

Great not another fight like this again! Oh well, I give up!
At worst, you screw up and die.

Who is online

Users browsing this forum: Baidu [Spider] and 11 guests