Wikipedia
Vayudoot ("messenger who rides on the wind") was a regional airline in India established on 20 January 1981 as a joint-venture between the two state-owned carriers, Indian Airlines and Air India. The airline was headquartered at New Delhi's Safdarjung Airport.
The airline was originally conceived to serve the Northeastern region of India where the surface transport facilities were inadequate and surface routes were circuitous. The regional hub for the Northeast Region was Calcutta ( Kolkata) and the airline built up operations to close to 30 destinations in this challenging area. Many of the airfields saw the resumption civil flights and fixed-wing aircraft after a gap of many decades.
The airline consistently lost money since its formation. The Government, struggling to find a solution to Vayudoot's continuing financial problems, considered closure and privatisation as options as the carrier's route and fleet structure made the operation unprofitable.