Just too many occurrences - These flight routes suffer the world’s worst turbulence

HANOI/BANGKOK (Bloomberg): A series of incidents that left scores of airline passengers needing medical attention has shone a spotlight on the problem of severe in-flight turbulence.

In recent months, Singapore Airlines Ltd., Qatar Airways and Air Europa flights have all suffered sudden drops in altitude, requiring passengers to need hospital treatment and, in Singapore’s case, leaving one man dead.