By Theo Leggett, BBC international business correspondent The suggestion that the Lion Air plane had a defective airspeed indicator is a significant development. The aircraft's erratic behaviour ...

In late December, the Federal Aviation Administration (FAA) released a special airworthiness information bulletin (SAIB) focused on the future installation of angle of attack (AOA) indicators and ...

The airspeed indicators on an aircraft or a similar flying vehicle display speed in knots. A knot is a speed measurement equivalent to one nautical mile per hour. In other words, if the aircraft ...