Motor Sich D-36 Series 4A is a bypass turbofan for transport and convertible passenger/cargo aircraft, including the An-74 TK-300. The manufacturer describes a thrust reverser, noise suppression, and a multipurpose mount; it publishes 6,500 kgf (63.74 kN) emergency and SLS/ISA takeoff thrust, 15.69 kN cruise thrust at 8,000 m/M0.75, 14.71 kN at 9,150 m/M0.60, and 1,130 kg dry mass. The Progress aviation-industry catalogue identifies the Series 4A as a certified D-36-family engine and supports the Ivchenko-Progress developer relationship. Lifecycle remains unknown.