Wing Commander Jatinder Paul Singh is on the posted strength of a Base Repair Depot of the IAF since 29 Jul 90 and employed as Officer i/c Aircraft Test & Ferry Flight. He is engaged in air testing of Hunter and MiG-21 variants.
On 30 Aug 90, Wg Cdr Singh was on an air test sortie of an aircraft after an engine change. On completion of the supersonic run, while descending through 8.4 kms at a speed of 650 kms IAS he brought the throttle back initially to BLC catch and subsequently to idle. On bringing the throttle to idle he heard a bang and experienced engine surge with rise in JPT. He promptly switched off the engine. He had a successful relight at 6 kms but on opening throttle experienced vibrations and unusual engine sound above 90% N1 RPM. He gave an RT call, restricted RPM to 85% and landed the aircraft off a descending circuit making a straight approach for the nearest runway. Post flight inspection revealed extensive damage to the compressor between 2nd and 8th stage. Wg Cdr Singh by his correct and prompt actions landed back a badly crippled aircraft. He displayed confidence and professional skill of a high order.
On a subsequent occasion on 21 Nov 90, Wg Cdr Singh was flying an air test sortie on another aircraft. Towards the end of the sortie, on engaging reheat, he experienced main hydraulic failure. He promptly switched off the reheat and the jet nozzle closed. He then experienced total main hydraulic failure with the pressure dropping to zero. The cone was struck between 80 to 85% and the undercarriage was lowered on emergency. While taking corrective action the pilot had already turned downwind and positioned for a flapless landing. He landed off a descending circuit keeping throttle use to minimum. The aircraft was switched off on touch down. Post flight inspection revealed a profuse leak at the outlet connection of hydraulic electric selector valve to jet nozzle actuator. Any further delay in taking corrective action would have caused fire in the tail section leading to loss of control. Wg Cdr Singh with his prompt actions handled the emergency in a professional manner.
For his self confidence, presence of mind, professional skill of a high order and devotion to duty, the President is pleased to award Vayu Seva Medal to Wg Cdr JP Singh.