MDA is a man-made (synthetic) recreational drug noted for its stimulant and psychedelic properties that has been used since the 1960s as a clubbing and sex-enhancing substance, with some similarities to LSD and MDMA (ecstasy). Sought after effects.
The soaring temperatures that Las Vegas is experiencing this week could cause grief for pilots at other airports, because heat thins the air and makes it more difficult for aircraft to lift at take-off. To deal with that, pilots need to gain more momentum as they roll down the runway before reaching liftoff speed.
It depends on a number of factors such as the gravity of the planet it's flying on, the atmospheric composition like is the atmosphere made of methane or nitro-oxide. Also it depends on who is flying the plane. If it's a jihadist it is probably flying really fast (800 mph) because they are likely trying to crash the plane. If it is an old person the speed is probably low (250 mph) because they are old. If it is a woman chances are the plane never successfully took off because woman can't fly.