Koolhoven F.K.40
Koolhoven · Netherlands · first flew 1928 · airliner
The Koolhoven F.K.40 was a small airliner built in the Netherlands in 1928 for KLM Royal Dutch Airlines. It was a conventional high-wing cantilever monoplane with a single engine in the nose.
Recognition (WEFT)
| W — Wings | High-mounted, straight |
|---|---|
| E — Engines | 1 × piston, nose-mounted |
| F — Fuselage | 11.5 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- High-wing cantilever monoplane with no external bracing
- Single engine mounted in the nose
- Small cabin airliner with seats for four to six passengers
Look for a small high-wing airliner with one engine in the nose and a cabin with several windows. Its wing is a cantilever type with no bracing struts.
Specifications
- The Koolhoven F.K.40 has a length of 11.5 m (38 ft).
- It has a wingspan of 14.5 m (48 ft).
- Its maximum speed is 185 km/h (115 mph).
- Typical crew: 2.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
The fuselage was of welded steel tube, and the wooden wing was skinned in plywood and held in place by four bolts to make removal easy. The cabin was spacious for its size and was meant to be readily changed between passengers, mail and freight.
Variants
Only one F.K.40 was built, and it flew with four seats, although up to six could be fitted.
Where you'll see it
The aircraft, registered PH-AES and nicknamed Piet Haas, was operated by KLM until it was sold into private hands in 1936. It was then sold to the Spanish Republican Air Force and flown as an air ambulance during the Spanish Civil War.
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- Koolhoven F.K.30 Toerist
- Koolhoven F.K.42
- Koolhoven F.K.43
- Koolhoven F.K.45
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- Bernard 190
- Boeing 80
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