Air India spokesperson was not immediately available for comments.(Representational)

Highlights Air India plane was about to take off from Mumbai airport when she fell

The air hostess, Harsha Lobo, has injuries on legs; was taken to hospital

The airline termed the incident as "unfortunate" and promised an inquiry

A 53-year-old air hostess was injured on Monday after she fell off an Air India plane that was about to take off at the Chhatrapati Shivaji International Airport in Mumbai.

The incident took place early this morning on the Air India's New Delhi-bound AI 864, the airline said, terming the incident as "unfortunate" and promising an inquiry. The air hostess was reportedly closing the door of the aircraft when she fell.

"In an unfortunate incident, one of our cabin crew (members), Harsha Lobo, fell down on the tarmac from the Boeing-777 aircraft door while closing it," the airline said in a statement.

"She sustained injuries to her legs and has been taken to the Nanavati Hospital for further treatment," it added.

About three years ago, an Air India engineer died after he was sucked into the running engine of an aircraft at this airport, allegedly as the pilots started the engines prematurely after mistaking a signal.