He received Param Vishisht Seva Medal (PVSM), the highest military award for peace-time service, in 1968.

In view of the nationalization of the armed forces, he was recalled and posted in February 1947 as the Chief Ground Instructor at the No.1 Advanced Flying School Ambala, to replace the RAF officer who was returning home.

On 26 January 1968, he was awarded the Param Vishisht Seva Medal,[5] and promoted to Air Marshal in March 1968.

(http://www.vedamu.org/features/FMrOPMehra.aspx) Mehra relinquished the post to Air Chief Marshal Hrushikesh Moolgavkar on 31 January 1976, on completion of his tenure.

[9][10] Air Chief Marshal Mehra was elected president of the Indian Olympic Association in 1975, and was responsible for the hosting by India of the 1982 Asian Games.

[11] In January, 2010, his autobiography, Memories: Sweet and Sour, was released by M. Hamid Ansari, Vice President of India in New Delhi.