In 1960 Prithi was categorized a Cat A1 instructor by Reggie Upot and was posted to 17 Sqn at Poona on Hunters under the CO ‘Johnny’ Bhasin and Flt Cdr ‘Johny’ Greene both to become towering professionals in the IAF.

He carried out these tasks successfully and without incurring a single incident involving loss or damage to any aircraft or equipment under development.

Due to his initiative, dedication, hard work and foresight, the Test Pilot School at ASTE was rated very high.

For his many remarkable contributions to IAF, flying over 6300 hours without a single avoidable accident and setting a shining example to younger officers.

Colonel Rai Bahadur Thakur Devi Singhji, last jagirdar of thikana Chittora of erstwhile Jaipur State.

[6] His son Air Marshal Vikram Singh is also a Test Pilot who had worked extensively on the Light Combat Aircraft.