Wg Cdr Chowdhury was the Leader of the first ever 1AF expedition to Mt Everest in April-May 2005. He played a pivotal role in not just leading the expedition but also in its very conceptualization. He took the initiative in 2002 and led a series of four preparatory expeditions to a height of 7757 metres. During these expeditions, he personally trained the mountaineers, passing on the knowledge of his accumulated experience to the fledgling mountaineers. He was the driving force behind the whole team and an excellent organiser. Extremely meticulous till the minutest detail, he handled every aspect right till the implementation of summit route plan with utmost care. He stayed for over a month above an altitude of 6400 metres to ensure the team's success. Despite conditions of extreme altitude and cold, his unrelenting ability to take prompt decisions, his constant motivation, encouragement and determination was an immaculate example of leadership which resulted in history being created for the IAF when the flag was proudly planted atop the Everest.

For his exemplary efforts, outstanding leadership, determination in spearheading the first ever IAF team to Mt Everest and distinguished services, the Hon'ble President is pleased to award 'Vishisht Seva Medal' to Wing Commander Amit Chowdhury.