Mutt, when leaving Jeddah, I like to do it as fast as possible
I use .75 when climbing between JED-RUH or else we tend to get held down in the mid thirties.
When given cleared high speed, I transition to 300 until asked to slow down or until it becomes too bumpy, or we need to slow down, so as to be 220 at LOC intercept, unless instructed otherwise. ATC has thanked us a few times for flying this profile so I guess we are ok??
Have a feeling I am about to get schooled here, but by you, no problem
Why 2.7% - we have found that it allows a nearly idle thrust descent without the use of speed brakes. Our principle doesn't like speed brakes being used. It just works for hitting numbers and speeds without being forced to work too hard. Plus I find that when we set anything over a three degree slope we never actually reach calculated top of descent before ATC descends us.
Cheers