"As per the preliminary findings it was due to bad weather and issues connected with weather. I cannot comment on it as enquiry is on. It is likely to be completed by the end of this month," Patel said during the Question Hour.
The CBI and the Directorate General of Civil Aviation are looking into the crash.
Replying to a supplementary, Patel said the helicopter was well maintained and the pilots were very experienced. "But when you are flying Visual Flight Range (VFR) helicopter, pilots should have foreseen the weather."
As far as flying operations are concerned, he said, strict monitoring by the DGCA as per the rules and regulations are in place and they are appropriate. Similarly the safety norms are on par with the best in the international standard.
On whether there was a proposal to have satellite phone in all helicopters to ensure better communication in difficult weather, Patel said, "This will be only an additional tool. All flying helicopters or planes are monitored by radars and other communication devices."
He also informed the House that the feasibility of tracking of helicopters during flight is in preliminary stage of evaluation.
To a question whether the government has looked into the reasons behind some recent helicopter accidents, Patel said "all accidents are investigated in accordance with the Aircraft Rules, 1937.
"Action is taken on the recommendations emanating from the investigations to prevent future accidents," the minister said.
He also said the DGCA has notified important guidelines for VIPs flying and these need to be adhered to.
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