A Russian investigation into a plane crash that killed 47 people has concluded pilot errors were largely influenced by a navigator who had been drinking vodka beforehand.
The aircraft hit a motorway minutes before it was due to land in June.
Air crash investigators concluded there had been no technical problem with the jet and that it was pilot errors that caused the tragedy, the BBC reports.
According to the report, the navigator had been in a state of slight alcoholic intoxication. He had drunk enough alcohol to make him impatient, inattentive and over-emotional.
The navigator is described as having demonstrated excessive activity before the crash.
He had been giving orders to the pilot about how to bring down the plane; the pilot had carried them out without questioning him.
