AI-25TLSh Turbofan

Designed to power trainers and combat trainers, as well as tailored for light attack aircraft. Installed on the L-39M, L-39M1 trainers. In commercial production since 2008. Adopted by Air Forces of Ukraine.

Combat Training
Maximum power (SLS, ISA)
Thrust, kgf 1,850 1,720
Specific fuel consumption, kg/kgf/h 0.6
Maximum power (Н=0 m, М=0.6, ISA +15 °С)
Thrust, kgf 1,250 1,100
Cruise (Н=6000m, М=0.483, ISA)
Thrust, kgf 515
Specific fuel consumption, kg/kgf/h 0.815
Acceleration time, sec, not over 6
Dimensions, mm
(with exhaust pipe)
3,358 x 985 x 958
Weight, dry, kg 350
Specified service life, h 4,000


  • L-39М1