AlphaCharlie,
240 to 16 / 210 to 12 / 180 to 8 / 160 to 4 sounds about right for a 73' - if no tailwind and not too heavy, we can start that at 4000 ft. and follow a normal descent path.
That being said, I know where u come from - I never had the pleasure of the Dash, but enjoyed the speed flex of the ATR very much. If SOP & ATC allows, we can do 320 kt.to 20 NM at 3000 ft. - but if standard speeds are in force, TPs and jets should be treated equally below FL100.
Another consideration is closely spaced arrivals with TP leading jet, one aircraft rejects T/O on runway and ATCO instructs both aircraft to go around - ok, a Q400 would not be a problem, but an ATR 42-3 followed by a 738 is not gonna be very pretty
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