Flying my MS flight sim B738 CHC=>BNE. Documented Max cruise air speed 320k. Take off and climb all normal. As I approach FL350 I notice that the max air speed decreases. I get OVERSPEED. Moving back to 280k fixes the problem. As I decend from FL350 into BNE, I notice that the Max airspeed (visable on the left hand side of the display) increases. Logic tells me that at FL350 - I should be able to go faster.
My question is - is this a flight sim 'glitch' or is there a reason why at altitude the max speed reduces ?
(yea - I know I'm just a sim jockey
)
PS... I did manage to find BNE!