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SpaceshipDC10
Topic Author
Posts: 6998
Joined: Tue Jan 01, 2013 11:44 am

CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:00 pm

The flight just turned around north of Montreal

https://www.flightradar24.com/CPA831/244ae5c2
Last edited by SpaceshipDC10 on Sun Mar 29, 2020 8:25 pm, edited 1 time in total.
 
Ebmek
Posts: 35
Joined: Sat Aug 18, 2018 9:24 am

Re: CX831 JFK-HKG is diverting to JFK

Sun Mar 29, 2020 8:23 pm

And now it seems to be turning back? Entering a holding pattern over Montreal?
 
SpaceshipDC10
Topic Author
Posts: 6998
Joined: Tue Jan 01, 2013 11:44 am

Re: CX831 JFK-HKG is diverting to JFK

Sun Mar 29, 2020 8:27 pm

Ebmek wrote:
And now it seems to be turning back? Entering a holding pattern over Montreal?


At FL310 and ground speed 530kts?
 
Ebmek
Posts: 35
Joined: Sat Aug 18, 2018 9:24 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:29 pm

As an ATC I have seen this before when pilots are trying to figure out exactly what to do without it being an emergency situation. Looks like they've either remedied the problem or are debating what to do before continuing on with the journey or returning to JFK.
 
SpaceshipDC10
Topic Author
Posts: 6998
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Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:39 pm

Speed has been slightly reduced, if online data is correct. Right now they are at 499 kts.
 
YOWVIEWER
Posts: 89
Joined: Wed Jun 23, 2010 12:45 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:41 pm

Was there enough fuel burn related to this deviation that Hong Kong may not be within reach now due to low reserves ?
 
SpaceshipDC10
Topic Author
Posts: 6998
Joined: Tue Jan 01, 2013 11:44 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:43 pm

The speed graph could give a clue as to why they've turned around, since about 45 minutes after take off it wasn't constant.
 
YOWVIEWER
Posts: 89
Joined: Wed Jun 23, 2010 12:45 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 8:50 pm

Good point, the speed is all over the map.
 
KFTG
Posts: 787
Joined: Sun Apr 28, 2019 12:08 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 9:19 pm

Why is this flight even operating?
 
oneskyjet
Posts: 88
Joined: Fri Oct 07, 2005 11:46 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 9:20 pm

Looks like they are continuing to HKG now. Problem resolved?
 
AA737-823
Posts: 5493
Joined: Wed Mar 01, 2000 11:10 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 9:20 pm

Not necessarily conclusive- you can see speed charts being all over the place on many flights. Honestly, sometimes I'm not even sure if they know whether they're displaying ground speed air speed or lunar orbital velocity!
 
cedarjet
Posts: 8782
Joined: Mon May 24, 1999 1:12 am

Re: CX831 JFK-HKG is diverting to JFK

Sun Mar 29, 2020 9:37 pm

SpaceshipDC10 wrote:
Ebmek wrote:
And now it seems to be turning back? Entering a holding pattern over Montreal?


At FL310 and ground speed 530kts?

Sure, buddy of mine spent three hours holding at 35,000 ft at the Russian border on a Finnair A340 op NRT HEL, airline hadn’t filed some paperwork for airspace transit. Why not?
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz
 
JAGflyer
Posts: 3570
Joined: Tue Aug 10, 2004 5:31 am

Re: CX831 JFK-HKG is diverting to JFK

Sun Mar 29, 2020 10:24 pm

SpaceshipDC10 wrote:
Ebmek wrote:
And now it seems to be turning back? Entering a holding pattern over Montreal?


At FL310 and ground speed 530kts?


FL310 is not out of the ordinary for a flight like this which is carrying a tremendous amount of fuel. A step climb up to final cruise altitude as they get lighter (due to burning off fuel) is normal and happens over several hours. Although, I doubt they've got more than 10% of the seats filled, if that so needing to stay so low may not be due to the reason I stated above.
If you flew today, thank a Flight Dispatcher!
 
tcfc424
Posts: 573
Joined: Mon Nov 17, 2003 11:56 am

Re: CX831 JFK-HKG is diverting to JFK?

Sun Mar 29, 2020 11:21 pm

Flightaware shows it now with a destination of JFK, but still seems to be headed over the pole. Speed has become consistent, and the altitude has stepped up consistently as well. Perhaps they considered turning back, but then decided to proceed?
 
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aemoreira1981
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Re: CX831 JFK-HKG is diverting to JFK?

Mon Mar 30, 2020 1:24 am

KFTG wrote:
Why is this flight even operating?


Either for belly cargo or repatriation. CX is only scheduled to operate one more flight to JFK until the end of April...on April 2 with a B77W. I suspect that this will be for repatriation as well. (Remember, all other China to JFK service is suspended as per CAAC directive.)

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