Comments by "Barrie Rodliffe" (@barrierodliffe4155) on "What happens if an aircraft climbs too high?!" video.

  1.  @dohc22h  Yet you do not know how fast they can fly at any height, the cruise speed at 35,000 feet is not the maximum speed and no figure is given at low altitude. I have seen several different claims for the speed of flight 175 and no official speed except for ATC giving the time from hi jack until impact from which it is possible to work out the average speed.
    1