The nose wheel gear of a Dubai-bound Air India Boeing 777 collapsed on Friday, two hours before it was bound to take off, the second incident involving the airline’s aircraft in two days at the Chhatrapati Shivaji International Airport. An engineer carrying out maintenance work under the aircraft’s belly had a narrow escape.

The incident occurred when the aircraft was still in the maintenance area, at Bay 48. “It’s a leased aircraft and not owned by Air India,” said an Air India spokesperson. “Prima facie, the nose gear seems to have collapsed but the plane was still in the maintenance area while designated to fly to Dubai.” He said nobody was injured in the incident.

On Thursday, the door of an Airbus A-320 was damaged after the still-attached aerobridge slammed against it as the pushback vehicle at the rear wheels began to move. The passengers had already boarded.

It is standard procedure for engineers to carry out maintenance tests on a departing plane. Sources said the plane's landing lever was put into the ‘retract’ position forcing the front wheel of the plane to collapse while it was still standing. The landing lever is put into this position once the aircraft hits airspace, allowing the wheels of the plane to retract into the aircraft.

“Prima facie, it appears to be a case of human error as the ground engineer should have fixed the nose pin on top of the front wheel before testing the landing lever,” said an air safety expert, not wishing to be named. The nose pin is a thick titanium pin that fixed on top of the front wheel of the aircraft so that even when the lever is ‘retracted’, the front wheel cannot collapse.

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