The HAL HAOP-27 Krishak was a military observation aircraft produced in India in the 1960s. It was initially developed by Hindustan Aeronautics as an enlarged, four-seat version of the HAL Pushpak

HAL Pushpak

-Bibliography:* The Illustrated Encyclopedia of Aircraft , 1985, Orbis Publishing, Page 2172...

 light aircraft. Two prototypes were flown in 1959, but with no interest from buyers, the project was shelved until the Indian Army

Indian Army

The Indian Army is the land based branch and the largest component of the Indian Armed Forces. With about 1,100,000 soldiers in active service and about 1,150,000 reserve troops, the Indian Army is the world's largest standing volunteer army...

 issued a requirement in the early 1960s for an aircraft to replace the Auster AOP

Auster AOP

Auster AOP may refer to:* Taylorcraft Auster - Taylorcraft Auster I, II, III, IV and V* Auster AOP.6* Auster AOP.9...

s then serving in the observation role. The original Krishak design was slightly revised to meet the new specification, and the type was adopted into service in 1965. The Krishak was phased out in the mid 1970s when it was replaced by the HAL Cheetah.

Specifications (Krishak Mk.2)