Moorabbin Air Museum

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Yeoman Cropmaster VH-AGL

PictureClick on image for larger version
Kingsford Smith Aviation Services of Bankstown Sydney undertook to convert the CA-6 Wackett Trainer into an agricultural crop duster/sprayer aircraft in the late 1950s. After the completion of five of of these conversions, the department of Civil Aviation (DCA) informed the company they would not approve any further agricultural aircraft with wooden glued wing structures.
A new company, Yeoman Aviation Pty Ltd was formed in August 1958 to develop the basic design into a modern agricultural aircraft designated YA-1, with metal wings and tail plane, powered with a Lycoming or Continental engine. The new wing was of the same dimensions of the Wackett's minus the slots and rounded wingtips. Extensive use was made of fibre glass including the engine cowls, lower fuselage, turtledecking, dorsal fin and with a 145 gallon fibre glass hopper. Stainless steel augmenter exhaust tubes became a distinctive feature of the new aircraft.
The first YA-1 was flown in January 1960 with a wooden tailplane, DCA being persuaded to allow the early YA-1s to enter service pending the subsequent building of a new metal tail plane and empenage section featuring a stabilator, swept fin and large rudder surface. DCA granted a Type Certificate for the new aircraft in June 1962.
Twenty Yeoman YA-1 Cropmasters were constructed at Bankstown from the early to mid 1960s and as production proceeded the use of Wackett parts was being reduced and replaced with new build-built components. By 1966, the only Wackett components still in use was the undercarriage structure which represented only 3% of the total airframe.
Despite high hopes of a New Zealand market for the YA-1 Yeoman Cropmaster opening failed when a conflict of interest arose with one franchisee, and a second franchisee who formed an associate company with Cropmaster Aircraft Pty Ltd, managed the importation of two aircraft only. In 1966 after the Australian Government failed to give tariff support against imported agricultural aircraft, an approach to move YA-1 production to the US did not succeed, which left the total production of the YA-1 Yeoman Cropmaster at the twenty built at Bankstown.
The Museum's Cropmaster is currently in storage



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TECHNICAL DATA

Engine:             

Length:             

Span:               

Speed:

            



0540 Lycoming engine

26 ft 6 in

34 ft

​138 mph

​






(8.08 m)

(10.36 m)

​(222 kmh)









 © 2022 Australian Aircraft Restoration Group. All Rights Reserved.
  • Home
  • News
  • History
  • Birthdays & Functions
  • Events
  • membership
  • Museum Collection
    • ENGINES >
      • ADC Cirrus II
      • ARMSTRONG SIDDELEY >
        • Armstrong Siddeley Genet
        • Armstrong Siddeley Python
        • Armstrong Siddeley Double Mamba
        • Armstrong Siddeley Cheetah
      • Bristol Hercules
      • J.A.P. V4 Engine (1910)
      • Junkers Jumo
      • Kelly and Lewis V8 (1915)
      • PRATT AND WHITNEY >
        • Pratt & Whitney R1340 Wasp
        • Pratt & Whitney R1830 Twin Wasp
        • Pratt & Whitney R2000 Twin Wasp
        • Microturbo Cougar 022 Turbojet
      • ROLLS ROYCE >
        • Rolls Royce Avon
        • Rolls Royce Dart
        • Rolls Royce Derwent
        • Rolls Royce Kestrel
        • Rolls Royce Merlin
        • Rolls Royce Nene
      • SNECMA Atar
      • Warner Scarab
    • COMMONWEALTH AIRCRAFT CORPORATION >
      • CAC Avon Sabre A94-910
      • CAC Bell Kiowa Army Helicopter
      • CAC Boomerang A46-25
      • CAC CA31 Trainer
      • CAC Ceres VH-WOT
      • CAC Macchi MB326H A7-054
      • CAC P-51D Mustang
      • CAC Wackett A3-22
      • CAC Pazmany PL4 VH-XAP
      • CAC Winjeel A85-418
      • CAC Wirraway A20-10
    • D.A.P / G.A.F. AIRCRAFT >
      • DAP Mk21 Beaufighter
      • DAP Beaufort
      • GAF Canberra
      • GAF Jindivik
      • GAF Lincoln
      • GAF Mirage
      • GAF N22 Nomad
    • Naval / Military >
      • AACA 10 Wamira
      • B.E. 2A (Wings Only)
      • Bristol Sycamore
      • Consolidated PBY Catalina
      • Curtiss P-40 Kittyhawk
      • De Havilland DH82A Tiger Moth
      • De Havilland DH115 Vampire
      • De Havilland Sea Venom
      • Fairey Firefly
      • Fairey Gannet
      • General Dynamics F-111C
      • Gloster Meteor
      • Miles Messenger
      • NZ Aerospace Industries CT-4
      • Westland Wessex
    • Commercial Aircraft >
      • Boeing B737-200
      • Bristol Freighter
      • de Havilland DH104 Dove
      • Douglas DC-2
      • Douglas DC-3
      • Douglas DC-9 Flight Simulator
      • Vickers Viscount
    • Other Aircraft >
      • Ansett Link Trainer
      • Auster Aiglet
      • BA Swallow II
      • BAE Systems Kingfisher
      • Cavelier
      • Cessna 310
      • de Havilland Gipsy Moth
      • Dauphin 2 Helicopter
      • Desoutter II
      • Evans VP Volksplane
      • Flying Flea
      • Link Trainer
      • McKenna Heath Parasol
      • Percival Proctor
      • Periera Osprey 2
      • Sanders Veenstra Thermite
      • Southern Cross SC-1
      • ULA Wombat
      • Victa AirTourer 100
      • Yeoman Cropmaster
    • Gliders >
      • Bensen Gyrocopter
      • Duigan Replica >
        • The Duigan Family
        • Ready Models
        • The Duigan History
        • The Duigan History 2
        • The Duigan History 3
        • The Duigan History 4
      • Heron Primary Glider
      • Koltai Ornithopter
      • Skycraft Scout
  • ONLINE SHOP
    • **New**
    • Airplane Toys >
      • Airplane Toys
      • Gliders & Kites
      • Soft Toys
      • R/C Aircraft
    • Apparel
    • MODELS >
      • Starter Model Kits
      • Model Kits
      • Assembled Models
      • Metal Earth Model Kits
    • Building Bricks >
      • Airfix Quick Build
      • Sluban Building Bricks
      • Other Building Bricks
    • Souvenirs >
      • ANAM Souvenirs
      • RAAF Centenary Souvenirs
      • Pencil Sharpeners
      • Bumper Stickers
      • Coffee Mugs
      • Patches
      • Badges
      • Key Rings
      • Posters
    • Childrens Costumes
    • Books >
      • New Books
      • Pre Loved Books
    • Tins
    • Raffle Tickets
    • Gift Passes
    • **Sale**
  • Supporting the Museum
    • Our Supporters
  • Getting There
  • Contact the Museum