It is learnt that the probe team led by Air Marshal Manavendra Singh examined all likely scenarios for the crash including possible human error or whether it was a case of disorientation by the crew when the helicopter was preparing for landing.
All the mangled remains of the helicopter, which crashed at Nanjapachatram near Coonoor in the Nilgiris district killing 14 including the country's first chief of defence staff Bipin Rawat have been collected from the site.
The lone survivor in the IAF helicopter crash that killed Chief of Defence Staff, General Bipin Rawat, and 12 others, and initially admitted to a hospital at Wellington in the Nilgiris district in Tamil Nadu, was shifted to Bengaluru for higher treatment on Thursday, official sources said.
'The accident was a result of entry into clouds due to unexpected change in weather conditions in the valley. This led to spatial disorientation of the pilot resulting in Controlled Flight into Terrain (CFIT),' it stated.
Singh said in a statement in the Lok Sabha that all efforts were being made to save IAF Group Captain Varun Singh, the lone survivor of the crash near Coonoor in Tamil Nadu on Wednesday, who was on life support at the military hospital in Wellington.
IAF Group Captain Varun Singh, the lone survivor in the helicopter crash that killed Chief of Defence Staff Gen Bipin Rawat and 12 others, is being shifted to Bengaluru from the Army hospital at Wellington in Tamil Nadu, his father said on Thursday.
'The inquiry would be completed expeditiously & facts brought out. Till then, to respect the dignity of the deceased, uninformed speculation may be avoided.'
The Nilgiris district police registered the FIR under Section 174 of the Code of Criminal Procedure (CrPC) and ADSP Muthumanikam was appointed as the investigation officer, official sources said. A probe is underway.
The black box, comprising the flight data recorder (FDR) and the cockpit voice recorder (CVR), of the ill-fated Mi-17V5 helicopter of the Indian Air Force was recovered from the crash site on Thursday.
Official sources said Singh will brief President Kovind about the accident as well as the situation arising out of it.
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