planecane
Topic Author
Posts: 44
Joined: Thu Feb 09, 2017 4:58 pm

How are simultaneous flights with same flt# over US handled/allowed?

Sun Feb 11, 2018 5:21 pm

As I write this, there are 2 AA1604 flights en route to the same destination. Due to a (I think weather) diversion, yesterday's AA1604 from MIA to EGE was diverted to DFW. The flight appears to have continued this morning. At the same time, today's scheduled AA1604 from MIA to EGE is also en route.

I'm basing this off of flightaware. I'm just curious how this is handled by ATC.
 
ilovelamp
Posts: 91
Joined: Tue Dec 05, 2017 12:45 am

How are simultaneous flights with same flt# over US handled/allowed?

Sun Feb 11, 2018 5:32 pm

Some airlines file their flight plans as “1604A.” That would be the crew’s call sign with ATC all the while the communication with the passengers would be “1604.” I’ve also seen some dispatchers use entirely different call signs like “(insert airline) 9932.” It gives appearance of a charter or repo but it’s just a technic to prevent multiple flight plans in the system at the same time with the same call sign.
 
FlyHossD
Posts: 1576
Joined: Mon Nov 02, 2009 3:45 pm

Re: How are simultaneous flights with same flt# over US handled/allowed?

Sun Feb 11, 2018 5:34 pm

The different carriers have different policies. One might add a letter to the call-sign (so AA1604 might become "American 1604C") and another might add a certain number (so AA1604 might become AA6604 (1604+5000)). Other airlines might change the number entirely (so AA1604 becomes AA8129).

Did you check AA's website, FlightAware or...?
My statements do not represent my former employer or my current employer and are my opinions only.
 
planecane
Topic Author
Posts: 44
Joined: Thu Feb 09, 2017 4:58 pm

Re: How are simultaneous flights with same flt# over US handled/allowed?

Sun Feb 11, 2018 5:49 pm

FlyHossD wrote:
The different carriers have different policies. One might add a letter to the call-sign (so AA1604 might become "American 1604C") and another might add a certain number (so AA1604 might become AA6604 (1604+5000)). Other airlines might change the number entirely (so AA1604 becomes AA8129).

Did you check AA's website, FlightAware or...?


On flightaware they both showed as AA1604. On AA's website they also both show as 1604 but you have to search yesterday to find the one that continued today.
 
MO11
Posts: 542
Joined: Sun Jan 08, 2017 5:07 pm

Re: How are simultaneous flights with same flt# over US handled/allowed?

Mon Feb 12, 2018 8:48 pm

FlyHossD wrote:
The different carriers have different policies. One might add a letter to the call-sign (so AA1604 might become "American 1604C") and another might add a certain number (so AA1604 might become AA6604 (1604+5000)). Other airlines might change the number entirely (so AA1604 becomes AA8129).



On AA, flight numbers <1000 add a "P" to the end. Flight numbers in the 1000s drop the 1 and add a "Q" to the end, and 2000 flight numbers have an "R" suffix. So one of these flights was 604Q.
 
CanadianNorth
Posts: 3204
Joined: Sat Aug 24, 2002 11:41 am

Re: How are simultaneous flights with same flt# over US handled/allowed?

Wed Feb 14, 2018 1:25 am

The airline here usually just adds a 2. For example, if there are two flight 307s in one day the first one will call themselves 307 and the second one will call themselves 2307.
HS-748, just like a 747 but better!
 
geologyrocks
Posts: 109
Joined: Sun Nov 13, 2011 12:05 am

Re: How are simultaneous flights with same flt# over US handled/allowed?

Wed Feb 14, 2018 8:19 pm

Adding a “D” is my personal favorite. I mean you got 26 frickin letters to choose from and you gotta choose a damn D.

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