Http://psk.blog.24heures.ch/archive/2016/06/22/inde-vol-inaugural-pour-le-htt40-861647.html
Lire aussi https://en.wikipedia.org/wiki/HAL_HTT-40 et de IHS alias Jane’s http://www.janes.com/article/57788/hal-rolls-out-long-delayed-htt-40-trainer
Extrait
By the middle of 2012 the aircraft’s future was in doubt as the Indian Air Force ordered 75 Pilatus PC-7 Mk IIs to fill the role envisioned for the HTT-40. In September 2012 the Air Force indicated that it had formally rejected the HTT-40 for service based on its cost per aircraft being double that of the PC-7 Mk II, a proven aircraft already in service worldwide. An MoD official noted, « We would be willing to pay higher rates to build indigenous capability in strategic defence equipment. But can HAL argue that the capability to build basic trainers is strategically vital[?] »[5][6][7]
Source image: http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=1528