New CX flight numbers

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Old Jan 1, 18, 7:50 am
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New CX flight numbers

Seems like there has been a recent change in some CX flight numbers? But I'm not really getting the logic behind some of the changes, it's not like they've made them make any more sense (the ones for SYD are messed up, unlike CX 251, 253, 255, 257 all go to LHR)
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Old Jan 1, 18, 8:11 am
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One issue with flight number management is that wherever possible they are defined to avoid similar sounding flight numbers (across different airlines) to be in the same area at the same time. I guess there may have been some readjustment for that. The days of CX having an immutable plan where you could deduce the destination from the first two digits of the flight number are pretty much over.
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Old Jan 1, 18, 2:47 pm
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I'd be interested to know why the SGN flights are numbered the way they are.

The 2x daily flights used to be 767/766 and 765/764, but about 2 years ago they changed CX765 to CX799, so they they now run as 767/766 and 799/764, which seems odd.

The non daily (~4x a week) is numbered 772 / 721
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Old Jan 1, 18, 3:13 pm
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Originally Posted by Jane's Addiction View Post
I'd be interested to know why the SGN flights are numbered the way they are.

The 2x daily flights used to be 767/766 and 765/764, but about 2 years ago they changed CX765 to CX799, so they they now run as 767/766 and 799/764, which seems odd.

The non daily (~4x a week) is numbered 772 / 721
765/799 is very odd pair.

i actually hate the way CX number thier flights to SYD, 100, 110, 162, 138...... after over hundred of flights, I still couldnít pop up the time of the flight when looking at the flight number..
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Old Jan 1, 18, 5:59 pm
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Originally Posted by jdtravels View Post
Seems like there has been a recent change in some CX flight numbers? But I'm not really getting the logic behind some of the changes, it's not like they've made them make any more sense (the ones for SYD are messed up, unlike CX 251, 253, 255, 257 all go to LHR)
I donít see any changes in the SYD flight numbers?
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Old Jan 1, 18, 6:23 pm
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I've read this somewhere before that they sometimes juggle around flight numbers when the delay index piles up. (I would suspect that's for the HKG-PEK morning CX departure 390 to 386 and the daily SHA-HKG KA service 859 to 813).

Last edited by iansh; Jan 1, 18 at 7:37 pm
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Old Jan 1, 18, 7:46 pm
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It may be ATC related? It has happened before where other airlines have changed HKG bound flight numbers as too thick a Chinese accent made it difficult to tell certain flights apart. It's not a problem if they will never be in HK airspace together e.g CX251/253/255/257 but if there was say a CX259 departing 20 mins after 257 it may be an issue.
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Old Jan 1, 18, 8:26 pm
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I didn't have a clue about this either, but recently was explained to me by my contact at HKIA. Very similar to what 1010101 says above. If ATC has similar flight numbers (including for different airlines) going at similar times, the airlines may be asked to change the flight #. Airlines can be asked to change for various reasons, many of which have to do with ensuring there is yet another redundancy for ATC safety. If four airlines happen to have a similar / same flight number in a tight window, you could have an easier possibility of an incident.

Getting in a tizzy over flight numbers seems to be the bottom of my worries with CX.
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Old Jan 1, 18, 10:12 pm
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The HKG-MNL / MNL HKG pairs are also weird, some make sense but others don't based on the turnaround, i.e. you can see how CX 907 HKG-MNL returning as CX 906 MNL-HKG but why does CX 901 return as CX 930.

CX 913/932
CX 905/912
CX 907/906
CX 901/930
CX 919/918
CX 903/902
CX 935/934

(OT: I just realized that there are 7 frequencies a day for CX which is more than the 2 big PH carries at 5 each)
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Old Jan 1, 18, 10:37 pm
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Originally Posted by Jane's Addiction View Post
I'd be interested to know why the SGN flights are numbered the way they are.

The 2x daily flights used to be 767/766 and 765/764, but about 2 years ago they changed CX765 to CX799, so they they now run as 767/766 and 799/764, which seems odd.

The non daily (~4x a week) is numbered 772 / 721
CX 765 used to land around 6pm.
A quick search shows MH 766 arrives at 6:05pm. Not hard to see possible confusion between the two.
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