Air traffic controllers watching Flight 778's progress noticed that the plane was proceeding down the runway at high speed and was not slowing down. An alarm signal was issued at 22:45. The flight operation director then ordered the controller in the airport control tower to send out the initial report of the accident, and ordered the weather observer at the main observation point to compile an observation of the weather. At 22:46, the airport was closed by the Aerodrome Flight Operation Director for further takeoffs and landings.