The details were given by Minister of State for Defence Subhash Bhamre in a written reply yesterday. Meanwhile, a Sukhoi aircraft of the IAF crashed in Rajasthan's Barmer district today, leaving three villagers injured. Both the pilots ejected safely.
A Chetak helicopter of the IAF too crash landed in Kaushambi in Uttar Pradesh today minutes after it took off from an airbase on outskirts of Allahabad.
The Minister, in his reply to a query in the Upper House, said in the current year, five fighter jets have crashed against four in 2015-16.
"Main reasons for these accidents were human error and technical defect," the Minister said.
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Bhamre said every accident is throughly investigated by a Court of Inquiry (CoI) to ascertain cause of the accident and recommendations of the CoI are implemented.
To a separate question, he identified operational hazards, weather conditions, human error and technical defects for accidents of Cheetah helicopters.
Since 2013-14, there have been four accidents involving Cheetah helicopters in which there were seven fatalities.
In reply to another query, Bhamre said the contract for 12 VVIP helicopters with Agusta Westland International Ltd, signed in 2010, was terminated with effect from January 1, 2014.
"As per decision of the Defence Acquisition Council on August 29, 2014, the RFP (request for proposal) for 197 reconnaissance and surveillance helicopters has been retracted," he said.
Replying to another query, he said US defence major Lockheed Martin has shown interest in setting up manufacturing facilities for F-16 jets in India under the 'Make in India' initiative. However, he said, no concrete proposal has been received from the company.
The Minister said Boeing and Sweden's Saab have also shown interest in setting up manufacturing facilities for fighter aircraft in India.
In the current year so far, he said there have been three army casualties in two militant attacks.