Don't Want Or Need HAL's HTT-40 Trainer: IAF Chief "There is no need for it (the HTT-40 turbo trainer project)," IAF chief Air Chief Marshal Norman Browne said in response to a question by me on a series of HAL projects that the IAF is deeply unhappy with. Confirming to me that the IAF has forwarded a recommendation to the government to shelf HAL's HTT-40 programme, the IAF chief said, "We have the Pilatus PC-7. It's a proven aircraft. The project HAL plans is from scratch. Our indications are that the costs will be too high. There is no need for all this."