The Directorate General of Civil Aviation (DGCA) has started a special audit of a helicopter operator Kestrel Aviation in Kedarnath, days after an official of the Uttarakhand Civil Aviation Development Authority (UCADA) was killed after being hit by a chopper's tail rotor blade after the inspection of the helipad.

DGCA has already ordered the services of the operator to be grounded after the official's death on April 23.