Hi Ali,
I'm a GF pilot and I understand your frustation. Except from Dxb and Auh, it is very seldom that ATC is gonna give us speed control. Therefore, we have to do our own "energy management" the best we can, playing with the speed.
When ATC gives me speed control, I follow it. Some collegues don't.
However, I have an understanding for why some guys are reluctant to follow certain clearances. Some factors decrease the confidence in the system:
- you call 2, 3 times until you get a response,
- we have to keep prompting for further descend and climb, while there is no other conflicting traffic,
- please switch off the red bars if you line us up on the active rwy,
- should I mention radar vectors in BAH?
I think, or I hope, that gradually, both sides will be doing a more professional job.
I heard some chew ups a couple of times in some other frequencies in Europe:
"xxx 123, if you cannot keep 220 kts, I will have to take you out of the sequence."
"xxx 123, next time you reduce the speed you have to advise me, there is traffic behind you with minimum separation".
Cheers.