These three repaints for the default Microsoft FSX DC-3 represent the beginnings of airline commercial aviation in India. JRD Tata started the first airline in India and is considered the father of India's aviation.
You will need the default Microsoft FSX DC-3 installed to use these repaints.
These repaints are for Tata Airlines, Maharashtra Airlines (an early regional line), and an early paint scheme for India Airline Corporation (which later became Air India).
The following link is provided to learn more about JRD Tata.
FSX DC-3 India Early Airlines - 3 Repaints