"Group Captain Varun Singh is on life support. All efforts are being made to save his life," the defence minister said.
According to the sources, the health condition of the Shaurya Chakra awardee is critical but stable and he can be shifted from the Military Hospital, Wellington to the Command Hospital in Bengaluru.
The Group Captain was recently conferred with the Shaurya Chakra by President Ram Nath Kovind for his act of exceptional gallantry.
Meanwhile, the mortal remains of those killed in the military chopper crash on Wednesday were brought to the Madras Regimental Centre from Military Hospital, Wellington, in Nilgiris district of Tamil Nadu.
The accident claimed the lives of 13 people including Chief of Defence Staff General Bipin Rawat and his wife Madhulika Rawat.
General Rawat was travelling from Sulur to Wellington when his helicopter crashed near Coonoor.
General Rawat, India's first CDS, was on a visit to the Defence Services Staff College in Wellington to address the faculty and student officers of the Staff Course when his chopper crashed.
The Indian Air Force has ordered an inquiry into the accident.
General Rawat In The Days Before He Died
Gen Rawat advocated hot pursuit to deal with terrorism
IAF chopper that ferried Rawat has seen many crashes
4 Army, IAF officers among 11 others killed in crash
Crashes that hit the IAF since 2015