The three officers and other technicians and engineers flying the lone 1995 vintage Superking B-200 of the Border Security Force were also trained to handle the most modern asset the force has inducted recently in its inventory - the Mi-17 V5.
This advanced 'Mi' chopper is equipped with an all- weather radar that makes it the most reliable machine for extricating troops and inserting commandos for operations in dense jungles and high-altitude any time of the day and during darkness and bad weather.
"The choppers are required to cater to the increasing usage and role of security forces deployed along difficult border areas and in the internal security grid," a senior official said.
These men whom we have lost today, the official said, were experienced and had in-depth knowledge of these assets entrusted with the largest border guarding force of the country.
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"They were going to service a Dhruv chopper stationed in Ranchi," another official said.
"There have been crashes of choppers earlier which has not only led to loss of the asset but has also killed pilots and crew in the line of duty but this is a jolt," the official said.
The intake in the air wing is already less, the official said, considering the specialised nature of the job and difficulty in getting talented personnel and officers from other forces and the Indian Air Force.