India, Sept. 11 -- Hindustan Aeronautics Limited (HAL) is set to deliver four Dhruv NG helicopters to Pawan Hans as the state-run aircraft maker moves to expand its civil aviation business, people aware of the development said on Friday. The helicopter service provider ordered 10 such multi-role helicopters in January.

The final two light combat aircraft (LCA Mk-1) trainers from a 2010 contract are also finally set to be delivered to the Indian Air Force, the people said asking not to be named. IAF ordered 40 Mk-1s in the initial operational clearance (IOC) and the more advanced final operational clearance (FOC) configurations-the first variants of the LCA.

The IOC contract for 20 aircraft was signed in 2006 for completion by 2011 and t...