New Delhi: Army Chief General M.M. Naravane has assumed the charge as the chairman of the Chiefs of Staff Committee that comprises the three service chiefs, people familiar with the development said on Wednesday.The post fell vacant following the death of Chief of Defence Staff General Bipin Rawat in the Indian Air Force helicopter crash on December 8.General Naravane has been given the charge as the chairman of the committee as he is the senior-most among the three service chiefs, the people cited above said.IAF Air Chief Marshal V.R. Chaudhari and Navy Chief Admiral R. Hari Kumar had taken over their respective positions on September 30 and November 30.Before the creation of the post of the Chief of Defence Staff, the senior-most among the three service chiefs used to be the chairman of the Chiefs of Staff Committee.The Chiefs of Staff Committee met on Tuesday and condoled the death of General Rawat, his wife Madhulika and 11 armed forces personnel.Group Captain Varun Singh, the lone survivor of the crash, succumbed to injuries on Wednesday at a military hospital in Bengaluru.Meanwhile, General Naravane held a telephonic conversation with Lieutenant General Fahd bin Abdullah Al-Mutair, the Commander of Royal Saudi Armed Forces.The Army said they discussed issues of bilateral defence cooperation.(PTI)