title: Aero A.25
text: # Aero A.25
  
  The Aero A.25 was a biplane military trainer aircraft developed in Czechoslovakia from the Aero A.11 reconnaissance-bomber and generally similar to the Aero A.21 night trainer.
  
  Some A.25s were powered by the less powerful 134 kW (180 hp) Breitfeld & Danek Perun I engines, in which case they were designated Aero A.125.
  
  ## Specifications (Aero A.25)
  
  Data from Tschechoslowakische Flugzeuge : von 1918 bis heute
  
  General characteristics
  
  * Crew: 2
  * Length: 8.1 m (26 ft 7 in)
  * Wingspan: 12.8 m (42 ft 0 in)
  * Height: 3.1 m (10 ft 2 in)
  * Wing area: 36.2 $m^2$ (390 sq ft)
  * Empty weight: 985 kg (2,172 lb)
  * Gross weight: 1,270 kg (2,800 lb)
  * Powerplant: 1 × BMW IIIa 6-cylinder qater-cooled in-line piston engine, 136 kW (182 hp)
  * Propellers: 2-bladed fixed-pitch propeller
  
  Performance
  
  * Maximum speed: 160 km/h (99 mph, 86 kn)
  * Service ceiling: 6,500 m (21,300 ft)
  * Rate of climb: 4 m/s (790 ft/min)
  * Wing loading: 35 $kg/m^2$ (7.2 lb/sq ft)
  * Power/mass: 0.110 kW/kg (0.067 hp/lb)
  
  ## Operators
  
  * Czechoslovakia.
  