Singapore Airlines plane dropped 54 metres in seconds, flight data shows

Investigation report says aircraft experienced a rapid change in gravitational force' during turbulence

The Singapore Airlines flight hit by severe turbulence last week dropped 54 metres in altitude in less than five seconds, preliminary findings from an investigation show.

A 73-year-old British passenger died of a suspected heart attack and dozens of people were injured after flight SQ321 from London to Singapore encountered what the airline described as sudden, extreme turbulence while flying over Myanmar. The flight carrying 211 passengers and 18 crew diverted to Bangkok for an emergency landing.