Aircraft History, Specification and Information
Cessna 188
Cessna 188B - C-GDWA
1972 Cessna 188B - C-GDWA (sn 18800946)
Photo taken Feb. 22, 2005
Penticton Airport, BC - Canada (YYF / CYYF)
Photo © Marcel Siegenthaler

The Cessna 188 is a family of light agricultural aircraft produced between 1966 and 1983 by the Cessna Aircraft Company.

The various versions of the 188 — the AGwagon, AGpickup, AGtruck and AGhusky, along with the AGcarryall variant of the 185, constituted Cessna's line of agricultural aircraft.

Development

In the early 1960s Cessna decided to expand their already wide line of light aircraft by entering the agricultural aircraft market. They surveyed pilots and operators of other brands of agricultural aircraft to see what features and capabilities these operators were looking for. The resulting aircraft was a conventional single-seat, piston-powered, strut-braced low-winged agricultural airplane.

The Cessna 188 borrowed heavily from the Cessna 180, the initial version using the same tail cone and fin structure as well as the same Continental O-470-R 230hp (170kW) powerplant. The 188’s airframe is predominantly built from 2024-T3 aluminum, with the chemical hopper constructed from fibreglass. The fuselage is of semi-monocoque construction and is pressurized on later models (using the dynamic pressure resulting from the aircraft's forward speed) to reduce induction of chemicals into the airframe.

The Cessna 188 was first flown on 19 February 1965. The aircraft was certified and entered production in February 1966, with 241 aircraft delivered the first year.

The initial design of the Cessna 188 was so successful that over its 17-year production run the basic airframe remained unchanged. Only the engines and the agricultural products dispensing systems were upgraded, other than some minor changes to the ventilation systems.

The main use for the Cessna 188 series was for agricultural purposes, but many examples were later acquired for use as glider and sailplane tugs.
A total of 3975 Cessna 188s of all four variants were built during its production run, made up of 53 AGpickups, 1589 AGwagons, 1949 AGtrucks and 385 AGhuskies.

Variants

  • 188 AGwagon 230
    Initial version powered by a Continental O-470-R 230 hp (172 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 3,800 lb (1,724 kg) in the restricted category. Certified on 14 February 1966.
  • 188A AGwagon "A"
    Powered by a Continental O-470-R 230 hp (172 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 3,800 lb (1,724 kg) in the restricted category. Certified on 26 September 1969.
  • 188A AGwagon "B"
    Powered by a Continental O-470-R 230 hp (172 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 3,800 lb (1,724 kg) in the restricted category. Certified on 26 September 1969.
  • 188B AGpickup
    Powered by a Continental O-470-R or O-470-S 230 hp (172 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 3,800 lb (1,724 kg) in the restricted category. Certified on 20 December 1971, production ended in 1976.
  • A188 AGwagon 300
    Initial version powered by a Continental IO-520-D 300 hp (224 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 4,000 lb (1,814 kg) in the restricted category. Certified on 14 February 1966.
  • A188A AGwagon "A"
    Powered by a Continental IO-520-D 300 hp (224 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 4,000 lb (1,814 kg) in the restricted category. Certified on 26 September 1969.
  • A188A AGwagon "B"
    Powered by a Continental IO-520-D 300 hp (224 kW) powerplant, a 200 US gallon (760 liter) chemical hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 4,000 lb (1,814 kg) in the restricted category. Certified on 26 September 1969.
  • A188B, AGwagon "C" and AGtruck
    Powered by a Continental IO-520-D 300 hp (224 kW) powerplant, a 280 US gallon (1060 liter) hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 4,000 lb (1,814 kg) in the restricted category. Certified on 20 December 1971, production of the AGwagon ended in 1981 and the AGwagon in 1985.
  • T188C AGhusky
    Powered by a turbocharged Continental TSIO-520-T 310 hp (231 kW) powerplant, a 280 US gallon (1060 liter) hopper, with a normal category gross weight of 3,300 lb (1,497 kg) and 4,400 lb (1,996 kg) in the restricted category. Certified on 8 September 1978, production ended in 1985.

Present day

Though the design is no longer in production, Cessna 188s are still in demand for use in agricultural applications, firefighting and also for glider and banner towing. The 188 is prized by aerial operators for its simplicity and ease of maintenance as well as its good parts support from Cessna.

Aircraft on display

  • Museum of Transport and Technology, Western Springs, Auckland, New Zealand - Cessna A188 Agwagon ZK-COO
  • Aero Space Museum of Calgary, Alberta, Canada - Cessna AgWagon 1966 C-GXQM

Specifications (1973 Cessna A188B-300 AGtruck)

General characteristics
Crew: one pilot
Capacity: Hopper: 280 gal (1060 l)
Length: 26 ft 3 inch (8 m)
Wingspan: 41 ft 8 in (12.7 m)
Height: 7 ft 9.5 in (2.4 m)
Wing area: 205 ft² (19 m²)
Airfoil: NACA 2412
Empty weight: With no dispersal equipment installed: 2,030 lb (921 kg)
Empty weight: With liquid dispersal system: 2,160 lb (980 kg)
Loaded weight: 3,300 lb (1,497 kg)
Useful load: Normal category, with no dispersal equipment installed: 1,270 lb (576 kg)
Useful load: Restricted category, with liquid dispersal system: 1,840 lb (835 kg)
Max takeoff weight: Normal category: 3,300 lb (1,497 kg)
Max takeoff weight: Restricted category: 4,000 lb (1,814 kg)
Powerplant: 1 × Continental IO-520-D, 300 hp (223.7 kW) 5 minutes, 285 hp (212.5 kW) continuous

Performance
Maximum speed: 121 mph (195 km/h)
Cruise speed: 114 mph (183 km/h) (at 75% power)
Stall speed: Clean: 61 mph (98 km/h)
Stall speed: With full flaps: 57 mph (92 km/h)
Range: 390 mi (628 km)
Service ceiling: 11,100 ft (3,383 m)
Rate of climb: 690 ft/min (3.5 m/s)
Wing loading: 16.1 lb/ft² (78.8 kg/m²)
Power/mass: 11 lb/hp (6.7 kg/kW)

Last updated November 18, 2011
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cessna 188".
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