There were no passengers inside the plane when the incident happened.
Sources said that the plane which had arrived from Mumbai was scheduled to take off at 9.45am to Delhi enroute to Paris and a team of technicians where readying the plane for departure.
The pilot and the engineer are injured.
"Staff were cleaning the wind shield and attending to other technical aspects inside the cockpit when Manik Lal walked in. He was not pleased to see too many people inside the cockpit and started to send them out. The flight engineer V T Kannan reached the cockpit and informed the pilot that the plane was yet to be handed over to the crew for flying. But the pilot refused to pay heed to the explanation," said an official.
This led to an argument which snowballed into a fight in which the flight engineer was injured and was admitted to a private hospital, he added.
An Air India official said," an investigation has been ordered and the pilot was derostered till a report is submitted about the incident."
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