AZORMP
Topic Author
Posts: 39
Joined: Thu Aug 01, 2019 5:08 pm

Airline callsigns

Sun Jan 26, 2020 8:19 pm

I’m curious about the various airline callsigns and why they sometimes differ from the advertised flight number. Here is an example from recent memory:

Lufthansa flight 442 FRA-DTW (333) is showing as DLH 3V.

I’ve noticed this with European airlines but I’ve also seen it with some SkyWest flights. Why would this be?

Thank you!
 
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zeke
Posts: 14680
Joined: Thu Dec 14, 2006 1:42 pm

Re: Airline callsigns

Sun Jan 26, 2020 8:32 pm

To avoid call sign confusion on the radio, some airlines are filing their plans with alpha numeric flight numbers.

In a busy radio frequency you might have more than one airline with flight 442, and flying international not everyone will pronounce the airline call sign the way you expect. The crew might miss the Lufthansa, however hear the 3 Victor and clarify.

Also on the radio 22 can sound like 32, 442 like 42 etc.
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IAHFLYR
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Joined: Sat Jun 25, 2005 12:56 am

Re: Airline callsigns

Fri Jan 31, 2020 2:01 pm

Another reason is when SKW5442 is late arriving and the continuing flight SKW5442 is ready for departure on a different aircraft they need to use a different call sign as the FAA's ATC computer will not accept the departure flight plan as you cannot have the same call sign operating on two different flights. So SKW makes a change in the departure call sign to whatever fits their system as long as it isn't another duplicate.
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dstblj52
Posts: 261
Joined: Tue Nov 19, 2019 8:38 pm

Re: Airline callsigns

Sat Feb 01, 2020 7:22 am

IAHFLYR wrote:
Another reason is when SKW5442 is late arriving and the continuing flight SKW5442 is ready for departure on a different aircraft they need to use a different call sign as the FAA's ATC computer will not accept the departure flight plan as you cannot have the same call sign operating on two different flights. So SKW makes a change in the departure call sign to whatever fits their system as long as it isn't another duplicate.

Especially because skywest operates for all of them and might have overlapping campaigns for me Delta 5419 and American 5419 etc etc.

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