Heinkel HD 25

what is it?

The Heinkel HD 25 was a two-seat shipboard biplane reconnaissance floatplane developed in Germany during the 1920s for production in Japan.

🔎How to recognise it: 1 piston engine with propeller · 14.9 m wingspan

base stats

• speed 203 km/htop speed
• range 910 kmwithout refuelling
• size 2,570 kgmax take-off weight
• built 18made 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

• 🎂First flew 101 years ago, in 1925.
• 🏎️Top speed is 1.6× a car on the Dutch motorway (130 km/h).
• 🚗Wingspan of 14.9 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

1925

introduced

1926

number built

18

role

reconnaissance seaplane

origin

🇩🇪 Germany

makers

Aichi, Heinkel

engines

1× Napier Lion

length

9.7 m

wingspan

14.9 m

height

4.3 m

max take-off weight

2,570 kg

top speed

203 km/h

range

910 km

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