[2] Over time, it expanded to night-mail services and scheduled passenger flights.

In order to maximize revenue, it began taking on passengers on its night-mail flights as well.

[3] On 7 December 1951, Pakistan detained a Himalayan Aviation flight from Ahmedabad, India, to Kabul, Afghanistan, at the stopover point in Karachi.

Pakistan had previously denied use of the direct Delhi-Kabul air-corridor that overflew the North West Frontier Province.

India and Pakistan had worked out an alternative Ahmadabad-Karachi-Zahedan (Iran)-Kabul route.