Commissioned on 30 Dec 72, Squadron Leader Abnash Chander Sharma got himself completely involved in the process of learning developing in the service. After an extensive experience of fighter flying at No. 32 wing (1973-75) and transport flying at NACC, he performed forecasting as well as instruction duties at Flying Instructors' School, Tambaram. In recognition of his outstanding professional acumen, Squadron Leader Abnash was selected as special forecasting officer to accompany the IAF contingent during 5th Antarctic Expedition (1985-86). Before leaving for Antarctica, the officer and prepared himself thoroughly by going through all the available literature about Antarctic weather and also on the spot observation made by the IAF Met Officers during 3rd and 4th expedition. He successfully completed training imparted by the Metrological Department for handling, and installation of sophisticated and modern equipment. For a before understanding of the Antarctic weather and climate he collected a possible data from Dakshin Gangotri, Sohirmachar and neighboring camps of other countries. He carried out round clock observation for eleven days at Sohirmachar (Maitree) Hill against heavy odds. Despite long spells of bad weather and hostile terrain, he ensured record flying by the Air Force crew by rendering timely advice. He also flew total of 20 hours as a crew, even during marginal weather, for weather recce and terrain familiarisation. He also participated in scientific activity for establishing a Data Collection Platform (DCP) and a Met tower.

For his deep sense of dedication, devotion to duty and successfully meeting the challenge of observation and forecasting in Antarctica, the President is pleased to award Vishisht Seva Medal to Squadron Leader Abnash Chander Sharma.