Just reading on the BBC about the flight from America to London which broke the subsonic record.
The 747-436 completed the flight in 4 hours 56 minutes. In the flight it would of reached 825mph as it was in the jet stream of Storm Ciara.
I thought this would of broken the sound barrier, if people would of heard the “sonic Boom” but this would not of been broken as it was helped along by fast moving air.
