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#2641

Aero A.21

first flight unknown· night trainer aircraft

what is it?

The Aero A.21 was a biplane military trainer aircraft developed in Czechoslovakia from the Aero A.11 reconnaissance-bomber. The aircraft was developed specifically as a night-trainer, to teach Czech Air Force pilots instrument flying techniques.

How to recognise it: 1 piston engine with propeller · 12.8 m wingspan

base stats

  • speed 170 km/htop speed
  • range 340 kmwithout refuelling
  • size 1,240 kgmax take-off weight
  • built 8made in total

Bars compare against all aircraft: 3,500 km/h, 20,000 km, 850 seats; size and number built on a log scale up to 640 t (An-225) and 45,000 built (Cessna 172).

fun facts

  • Wingspan of 12.8 m: about 3 cars parked nose to tail.

piston: A car-like piston engine turning a propeller: simple and cheap, the classic small plane.

spec sheet

first flight
—
number built
8
role
night trainer aircraft
makers
AERO Vodochody Aerospace
engines
1× Breitfeld & Danek Perun I
crew
2
length
8.1 m
wingspan
12.8 m
height
3.2 m
max take-off weight
1,240 kg
top speed
170 km/h
cruise speed
150 km/h
range
340 km
ceiling
6,500 m

Specs are for the version in the Wikipedia article's specification section. Blank means the sources don't say.

family

Sources: Wikidata Q2650803, Wikipedia: Aero A.21 (CC BY-SA 4.0).Updated 2026-10-24.

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