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"atis Has Been Changed To Tango"  
User currently offlineTrickijedi From United States of America, joined May 2001, 3266 posts, RR: 5
Posted (12 years 6 months 3 weeks 6 hours ago) and read 2349 times:

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!
10 replies: All unread, jump to last
 
User currently offlinePPGMD From United States of America, joined Sep 2001, 2453 posts, RR: 0
Reply 1, posted (12 years 6 months 3 weeks 6 hours ago) and read 2304 times:

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.
User currently offlineJsuen From United States of America, joined Aug 2001, 211 posts, RR: 0
Reply 2, posted (12 years 6 months 3 weeks 6 hours ago) and read 2295 times:

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.

User currently offlineBio15 From Colombia, joined Mar 2001, 1089 posts, RR: 7
Reply 3, posted (12 years 6 months 3 weeks 5 hours ago) and read 2260 times:

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


User currently offlineH. Simpson From United States of America, joined Mar 2001, 949 posts, RR: 3
Reply 4, posted (12 years 6 months 3 weeks 4 hours ago) and read 2242 times:

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.

User currently offlineWoodreau From United States of America, joined Sep 2001, 1038 posts, RR: 6
Reply 5, posted (12 years 6 months 3 weeks 2 hours ago) and read 2219 times:

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.
User currently offlineSophiemaltese From United States of America, joined Feb 2001, 2064 posts, RR: 3
Reply 6, posted (12 years 6 months 2 weeks 6 days 22 hours ago) and read 2198 times:

It just means that the ATIS information has been updated as it is every ten minutes if I'm not mistaken.

User currently offlineKAUSpilot From United States of America, joined Jan 2002, 1958 posts, RR: 33
Reply 7, posted (12 years 6 months 2 weeks 6 days 21 hours ago) and read 2191 times:

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.


User currently offlineContact_tower From Norway, joined Sep 2001, 536 posts, RR: 1
Reply 8, posted (12 years 6 months 2 weeks 6 days 8 hours ago) and read 2144 times:

ATIS has to be updated every 30 minutes, it's international regulation (ICAO).
Once again i think the FAA has disregarded it...... Big grin


User currently offlineKAUSpilot From United States of America, joined Jan 2002, 1958 posts, RR: 33
Reply 9, posted (12 years 6 months 2 weeks 6 days 6 hours ago) and read 2133 times:

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.

User currently offlinePPGMD From United States of America, joined Sep 2001, 2453 posts, RR: 0
Reply 10, posted (12 years 6 months 2 weeks 6 days 6 hours ago) and read 2128 times:

Great not another fight like this again! Oh well, I give up!


At worst, you screw up and die.
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