A Boeing 747 flying from London Heathrow to Hong Kong was forced to declare a ‘mayday’ after electrical failures led to false airspeed readings, causing the aircraft to plunge at more than 6,000ft a minute.
The cargo plane, which left Heathrow on February 8, 2024, began suffering electrical problems almost immediately after take-off, according to an investigation by the Air Accidents Investigation Branch (AAIB).