The first ascent of Chirbas Parbat happened on 8 June 1986 by Kangchenjunga Foundation, Calcutta. The team led by Indranath Mukherjee who was one of the member of 1985 team led by R Bhattacharya. Goutam Dutta and Sher Singh reached the summit of Chirbas Parbat on 8 June.