Only Indian Air Force officer to date have been honoured with the Param Vir Chakra

Question =

The Param Vir Chakra (PVC) is India's highest military decoration awarded for the highest degree of valour or self-sacrifice in the presence of the enemy. The medal has been awarded 21 times, 14 of which were posthumous awards and 16 were awarded for their action in Indo-Pakistani conflicts alone. ? Who has been the only Indian Air Force officer to date have been honoured with the Param Vir Chakra ?

Answer = 

Flying Officer Nirmal Jit Singh Sekhon was awarded the Param Vir Chakra posthumously in 1971. He is the only Indian Air Force officer to date have been honoured with the Param Vir Chakra.