Flaps are part of wings of an aircraft and they are engaged to create a drag during a landing or a take-off.
Taneja gave the example of the Imphal airport, where the plane descends more steeply as compared to other airports when approaching for landing. He said when an aircraft is coming down steeply, it needs to have a drag so that it remains slow, and in these circumstances, a pilot has to do a "Flap full" landing.
In order to achieve targets, what would people do? They will do Flap 3 landings without giving consideration whether it is safe or unsafe. This directly impacts the passenger safety," he had claimed in his YouTube video.