Ivchenko-Progress AI-25TL trainer turbofan
The Ivchenko-Progress AI-25TL is a two-shaft trainer turbofan used in the Aero L-39 Albatros and related training aircraft. Motor Sich documents the zero/negative-g lubrication system, operation of AI-25 versions in more than 40 countries, and 1,720 kgf (16.87 kN) SLS/ISA maximum takeoff thrust; its current specification lists 350 kg dry weight and 3.358 m overall length with extension pipe. The Czech Ministry of Defence independently identifies the AI-25TL as the L-39 engine at the same thrust class. Current manufacturer support and documented widespread operation support active in-service status without claiming a new-aircraft production rate.
Identity
- Aliases
- AI-25TLIvchenko AI-25TL
- Domains
- aviation
- Identity Level
- model
- Kind
- turbofan
- Name
- Ivchenko-Progress AI-25TL trainer turbofan
- Status
- active
Details
- Air Breathing Specs
- Max Thrust
- …
- Spool Count
- 2
- Description
- The Ivchenko-Progress AI-25TL is a two-shaft trainer turbofan used in the Aero L-39 Albatros and related training aircraft. Motor Sich documents the zero/negative-g lubrication system, operation of AI-25 versions in more than 40 countries, and 1,720 kgf (16.87 kN) SLS/ISA maximum takeoff thrust; its current specification lists 350 kg dry weight and 3.358 m overall length with extension pipe. The Czech Ministry of Defence independently identifies the AI-25TL as the L-39 engine at the same thrust class. Current manufacturer support and documented widespread operation support active in-service status without claiming a new-aircraft production rate.
- Dry Mass
- …
- Length
- …
- Manufacturers
Links
Assets & Meta
- Creation Time
- August 15, 2026 at 03:58:34 UTC
- Updated Time
- August 22, 2026 at 02:03:07 UTC
Other
- Sources
- Accessed Date
- 2026-08-21
- Note
- Motor Sich identifies AI-25TL and AI-25TLK as two-shaft trainer turbofans, documents their zero/negative-g lubrication system and operation in more than 40 countries, and publishes 1,720 kgf (16.87 kN) SLS/ISA maximum takeoff thrust, 0.575 kg/kgf-h specific fuel consumption, 350 kg dry weight, and 3,358 mm overall length with extension pipe for both models.
- Publisher
- Motor Sich JSC
- Title
- AI-25TL, AI-25TLK
- Accessed Date
- 2026-08-14
- Note
- The Czech Ministry of Defence identifies the ZMBD Progress (Ivchenko) AI-25TL as the Aero L-39 Albatros jet engine and gives 16.87 kN engine thrust.
- Publisher
- Ministry of Defence of the Czech Republic
- Title
- L-39 Albatros