On 24 August 2003, he was detailed to fly as number two in a three aircraft air maintenance mission in Op-Meghdoot, Ex-Base Camp to Amar and Sonam, the highest helipads in the world.

In the second shuttle from Khanda helipad to Sonam helipad, while climbing past 18,500 feet, the aircraft suddenly yawed to right, with drop in engine and rotor RPM. Flight Lieutenant Nayar, displaying great presence of mind in identifying the emergency as an engine failure, instinctively lowered the collective to put the aircraft into a state of autorotation. An engine failure at such high altitudes demands prompt actions from a pilot after which any other action is futile. He thereafter, in calm and thoroughly professional manner turned towards the foot tract the only safe landing spot in the crevasse prone, undulating terrain and simultaneously gave the May Day call. He executed a flawless autorotative landing, a feat often unheard of at such an elevation. His exceptional situational awareness, skill and professional handling of the emergency resulted in an absolutely safe landing and both the pilots coming out scratch free from the aircraft. Flight lieutenant Nayar's professionalism was also displayed earlier when he executed a safe landing at Leh airfield during an engine failure on 16 February 2002, with only minor damage to the Oleos. His actions are in keeping with the best traditions of the Indian Air Force and attributes of an Air Warrior.

For this act of exceptional gallantry and exemplary professionalism, the Hon'ble President is pleased to award Vayu Sena Medal (Gallantry) to Flight Lieutenant Navin Maranatha Nayar.