AOA

It is incomprehensible that Boeing designed the software to take input from only a single vulnerable sensor; in fact, there was already a second AoA sensor on the aircraft, which sports one on each side of the nose.

The AOA represents most UK airports ranging from Heathrow to Edinburgh.

Karen Dee, chief executive of the AOA, said at peak time passengers "may not have the experience they are used to".

The AOA has asked travellers to arrive early for flights due to longer check-in waits and has also urged people to make sure they have any Covid-related documents needed for their destination.

Instead, it has designed monitors of the various air data systems that will cross-check each other and catch an erroneous AOA indication.