Smaller plane on runway was not cleared for takeoff, however, say authorities as investigations begin

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• A visual guide to the Tokyo airport collision

A passenger jet that collided with a coastguard plane at Haneda airport in Tokyo had been given permission to land, but the smaller plane was not cleared for takeoff, Japanese authorities have said, as police reportedly prepared to investigate whether the crash involved professional negligence.

Five people on the coastguard aircraft died but all 379 passengers and crew escaped to safety down emergency slides minutes before the Japan Airlines Airbus was engulfed in flames on Tuesday.