The committee finding into the crash suggests that the pilots were following a railway line while flying towards the Defence Services Staff College in Wellington from Sulur air base.
The Air Force's inquiry into the chopper crash that killed CDS General Bipin Rawat, his wife and 11 armed forces personnel is almost complete and will be submitted soon, sources told NDTV Sunday, adding that bad weather was the likely cause.
The probe team is headed by Air Marshal Manvendra Singh and includes two Brigadier-rank officers from the Army and Navy. Sources said the initial investigations into the case suggested that the accident was sudden.