Weatherly 201

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Weatherly 201
Weatherly 201 (5235656178).jpg
Role Agricultural monoplane
Manufacturer Weatherly Aviation Company
Designer John Weatherly
First flight 1967
Number built 100+
Unit cost
$58,000 (1979) [1]
Developed into Weatherly 620

The Weatherly Model 201 is a 1960s American agricultural monoplane designed and built by the Weatherly Aviation Company of Hollister, California.


In the early 1960s, John Weatherly formed the Weatherly Aviation Company, to convert 19 Fairchild M-62s into the Weatherly WM-62C agricultural aircraft. With this experience, Weatherly designed his own agricultural monoplane, the Weatherly Model 201.[2] The Weatherly 201 is a cantilever low-wing monoplane, with a fixed tailwheel landing gear, and powered by a nose-mounted 450 hp (336 kW) Pratt & Whitney R-985 radial engine. Its fuselage is constructed of steel tube with aluminium panel covering, while the wings, which are unswept and have 6 degrees of dihedral, are of all metal (aluminium) construction. It has an enclosed cockpit for the pilot, and a glassfibre 270 gallon (1022 litre) chemical hopper in the forward fuselage. It was designed for crop dusting and liquid spraying, and was certified in 1967.

In 1970, the Model 201A was introduced that had a larger chemical hopper and fuel capacity; it was also built as the Model 201B with minor improvements. In 1975, another improved version, the Model 201C, was introduced.

By 1979, more than 100 Model 201s had been built, and it was then succeeded by the improved Weatherly 620.[3]


Model 201
Initial production variant, 2 built.
Model 201A
Enlarged fuel capacity and a larger chemical hopper, 5 built.
Model 201B
201A with a wider canopy, leading fillet at wing root and other minor improvements, 45 built.
Model 201C
Improved variant, 38 built.

Specifications (201A)[edit]

Data from Jane's All The World's Aircraft 1971-72 [4]

General characteristics



  1. ^ Field 1979, p.1183.
  2. ^ J W R Taylor 1971, p.420.
  3. ^ J W R Taylor 1980, p.453.
  4. ^ J W R Taylor 1971 p.421
  5. ^ Agricultural Max weight
  • Field, Hugh. "Agricultural Aircraft". Flight International (14 April 1979): 1179–1183.
  • Taylor, John W R (editor) (1971). Jane's All The World's Aircraft 1971-72. London: Sampson Low. ISBN 0-354-00094-2.CS1 maint: Extra text: authors list (link)
  • Taylor, John W R (editor) (1980). Jane's All The World's Aircraft 1980-81. London: Jane's. ISBN 0-7106-0705-9.CS1 maint: Extra text: authors list (link)
  • "Aircraft & Aircraft Carrier Data: The Weatherly 201/620". Retrieved 30 December 2008.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. p. 3079.

External links[edit]