The most successful subsonic jet trainer in the world

A trainer and light fighter jet, known for its versatility, reliability, low operating costs, easy maintenance, and universality of deployment. It’s still widely used by air forces around the world for basic and advanced pilot training, as well as combat missions.

L-39 Albatros

  • First flight in 1968/end of production in 1995
  • Jet trainer for Warsaw Pact countries
  • Almost 3,000 produced
  • More than 40 military operators in all climatic conditions
  • Still used by 20 acrobatic teams
  • Around 700 L-39 aircraft still in civil and military operation

L-39 Albatros

Avionics | HUD | VOR/ILS/DME | VHF radios | Identification | NVG

Flight gear | Helmets and masks | Anti-G | Life jackets

Safety pages | Accident recorder | VS-2 ejection seat | HUMS | Formation lights

Systems | Flexible Teflon hoses | Vibration meter | Ice detector | Ni-Cd battery | OBOGS



Aero offers L-39 users a wide range of short-, medium-, and long-term solutions.

Aero offers a comprehensive maintenance programme for the L-39, which enables it to fly for decades to come.

  • Overhauls

    Maintenance Repair & Overhaul

    An overhaul literally gives an aircraft a “new lease of life”. We use unique know-how, documentation, and overhaul methods to ensure safe and reliable future operation.

    Overhauled aircraft fulfil the same requirements as completely new aircraft coming off the production line, and have the full Aero guarantee.

  • Service life extension programme

    Service life consumption and extension programmes

    The service life of the L-39 is limited by cumulative fatigue, which is determined primarily by the amount and frequency of vertical load during operation.

    If the aircraft is operated within the recommended design spectra, the aircraft’s actual service life in terms of flight hours exactly corresponds to the entries in the log book, and can reach 3,000–4,500 flight hours (depending on the version).


    For L-39 operators that want to increase their aircraft’s performance and availability, Aero offers the option of remotorising existing aircraft with new Williams International FJ44-4M engines with an output of 16.87 kN.

    Logistics Support

    We provide full after-sales support (spare parts, services, training, consulting, etc.)

    o shorten delivery times and increase flexibility, Aero recommends that its customers take advantage of the FOSS (follow-on support service) contract.

In order to ensure the airworthiness of the L-39, despite the increasing age and number of hours flown, new maintenance and overhaul methods are used, including:

Technical specifications

Parametr L-39C L-39ZO L-39ZA
Wing span (m) 9,44
Length (m) 12,13
Height (m) 4,70
Bearing surface (m2) 18,80
Empty aircraft weight (kg) 3 456 (3 196) 3 470 3 400
Maximum take-off weight (kg) 4 700 (4 300) 5 616 5 500
Load per surface unit (kg/m2) 229 (218) 296 290
Maximum horizontal flight speed (km/h) H = 0 m 700 (660) 610 610
H = 5 000 m 750 (680) 630 620
Maximum permissible speed (km/h) 910 850 850
Landing speed (km/h) 165 (160) 185 195
Initial climb rate at normal take-off weight (m/s) 22 (16) 13,5 13,5
Climb time to 5,000 m (min.) 5 (7,5) 10 11
Practical access (m) 11 500 (11 000) 7 500 7 500
Take-off on hard surfaces (m) 480 (600) 970 1 100
Take-off on grass (m) 630
Landing on hard surfaces with braking (m) 600 (700) 800 800
Landing on grass with braking (m) 700
Range at H=5 000 m (km) 1 000 (900) 1 260 1 200
Maximum flight time (h.min) 2.30 (2) 3.20 3.20