Arriving at the airport, we learnt the flight had been delayed due to problems with the incoming aircraft, and the revised departure time was 11am the following day.

Various chiefs analysed incoming aircraft to help solve this problem.

Controllers would also be able to reduce the number low-level 'stacks', where incoming aircraft circle an airport waiting for runway clearance.

That aircraft's captain contacted the tower and reported wind shear on final and cumulonimbus over the airport, a report audible to all incoming aircraft.

All incoming aircraft would need to be equipped with a sensor to receive the signal, a super-precise altimeter, and a reliable autopilot.