US regulator grounds Virgin Galactic space planes as it investigates July flight

• Flight to edge of space veered off course during descent
• Virgin criticizes misleading characterizations' of incident

Virgin Galactic space planes, which the British billionaire Richard Branson used to launch his journey into space in July, have been temporarily grounded by the US Federal Aviation Administration (FAA) while it conducts an investigation into an issue that occurred during the 11 July flight.

Virgin Galactic may not return the SpaceShipTwo vehicle to flight until the FAA approves the final mishap investigation report or determines the issues related to the mishap do not affect public safety," the FAA said in a statement to the Guardian on Thursday.