The orders instruct cabin crews of all domestic airlines to talk to pilots every half hour to keep them awake, and to keep speaker volume high so that pilots can hear air traffic controllers.
The instructions also reiterate general safety measures for cabin crew such as taking regular rest periods and limiting the length of each shift.
Last year the pilots of a Mumbai-bound Air India flight reportedly fell asleep and overshot their destination.
An official with the DGCA denied that there was a problem with Indian pilots falling asleep and said it was normal for the cockpit crew to feel drowsy.
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Image of commercial airline pilots preparing for takeoff, by Jimin Lai.