"The aircraft has gone missing along with six crew members and 23 defence personnel for over 100 days now. The Air Force is not providing exact status and details of the search operations," Kunal's father Rajendra told reporters here.
Kunal was the navigator on the aircraft which went missing.
Defence Minister Manohar Parrikar had visited the Barpatte family here and assured them of all support.
Rajendra said recently they received a letter from the Assistant Chief of Air Staff, Air headquarters in New Delhi, seeking consent for "presumption of demise".
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"It is Air Force which should declare about their demise. Why are they (Air Force) seeking consent from us when they know everything about the operation," he said.
"Air Force had created a WhatsApp group of all the family members of missing crew members. However, they have stopped that group," Rajendra said.
"All the families are in follow up with the Air Force on search operation. However, sadly there are no updates and the authorities have almost concluded the search operations despite the fact that wreckage is still not salvaged," alleged Kunal's parents.
"Our basic objection and demand is that if you (Air Force) do not have expertise in locating the aircraft, you should seek help from foreign countries," he said.
"We have not received any response from the authorities," Rajendra added.
Rajendra claimed that "a source had clarified that the
fleet of AN-32 did not have features which planes from the Navy and Coast Guard have because AN-32 is not primarily a marine / maritime aircraft."
He demanded that the use of AN-32 Aircraft be stopped to save the lives of IAF personnel and avoid wastage of national wealth.
Kunal, a graduate from Fergusson College with B Sc in Electronics, had joined the IAF Academy, Dundigal. He was commissioned in 2008.