Safety Notice SN-2021/014 – Pitot Blockage Events
The UK CAA and AAIB have been advised of three separate events occurring at London Heathrow Airport between 9 June 2021 – 11 June 2021, whereby aircraft have been subject of pitot blockages that resulted in airspeed discrepancies and associated crew actions. The cause of these events are the subject of ICAO Annex 13 investigation, which the UK AAIB is undertaking, however initial feedback suggests a form of insect infestation may have contributed to these events
