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Ag Cat
G164B AgCat.jpg
Ag Cat G-164B
Role Agricultural aircraft
Manufacturer Grumman
First flight 1957[1]
Introduction 1957[1]
Schweizer Ag Cat B
G164A on Floats

The Grumman G-164 Ag Cat is a single-engine biplane agricultural aircraft, developed by Grumman in the 1950s.


The Ag Cat was the first aircraft specifically designed by a major aircraft company for agricultural aviation.[2]

In 1955, Grumman preliminary design engineers Joe Lippert and Arthur Koch proposed the design for a "purpose built" crop dusting airplane as a means of fulfilling a pressing need in the agricultural community as well as the perceived need for Grumman to diversify its product lines. The first G-164, which was built by Grumman, accomplished its maiden flight on May 27, 1957 with Grumman test pilot Hank Kurt at the controls.[2][3]

At this time, the Grumman G-164 did not have a name. Leroy Grumman suggested "The Grasshopper." However, Dick Reade suggested "Ag-Cat," following Grumman's naming tradition using the suffix "-Cat" in aircraft names (e.g., F4F Wildcat and F6F Hellcat). Mr. Grumman agreed and the Grumman G-164 became the "Ag-Cat." [3]

Large military orders prevented the production of the Ag-Cat at Grumman's Bethpage facility. Grumman's Board of Directors chose to subcontract the entire program to the Schweizer Aircraft Company of Elmira, New York. Initial production was through a contract between Schweizer Aircraft Corporation,[4] and Grumman. The first Schweizer-built Ag-Cat, bearing registration number N10200 flew on October 17, 1958 under the control of Schweizer test pilot Clyde Cook.[3] Full production began in January 1959 with Schweizer delivering 12 FAA certified airplanes to Grumman by March 1959. The FAA granted type certification on January 20, 1959.[5]

The ownership of the Ag-Cat design has changed hands several times. Grumman transferred ownership to its commercial aircraft subsidiary, Grumman American, in 1973. The Grumman American subsidiary, which also owned the Grumman Gulfstream design series, was sold to American Jet Industries in 1978. From initial production through 1981, Schweizer built 2,455 aircraft under contract.[6] In 1981 Schweizer bought the rights to the design and continued production under the name Schweizer Ag-Cat.[4]

Schweizer sold the design to Ag-Cat Corp. of Malden, Missouri in 1995. Five model G-164B aircraft were produced, and registered, before Ag-Cat Corp. entered bankruptcy. One additional aircraft, a G-164BT500, is listed in the FAA registry as having been produced by Ag-Cat Corp., however no tail number was issued.[7] This may have been an upgrade to an existing airframe.

In February 2001 the design was sold to Allied Ag-Cat Productions Inc. of Walnut Ridge, Arkansas.[5] Allied Ag-Cat are not producing new aircraft although a related company operates a large fleet of Ag-Cats.

The basic airframe incorporates many safety innovations, including a pressurized cockpit to keep pesticides out, air conditioning and a fuselage structure that is designed to progressively collapse in the event of a collision.[4] Lippert and Koch were recognized for their innovation in agricultural aircraft, being awarded the Puffer Award by Delta Air Lines in 1974. [8]

Floats were approved for the aircraft in the early 1990s in Australia.[citation needed]


An Ag Cat set up for wingwalking
Grumman G-164A Ag Cat
G-164 Ag-Cat
Ag Cat
The basic model Ag Cat was certified with four different engines: the 220-225 hp (164-168 kW) Continental Motors radial engine, the 240 hp (179 kW) Gulf Coast W-670-240 radial engine, the 245 hp (183 kW) Jacobs L-4M or L-4MB radial engine and the 275-300 hp (205-224 kW) Jacobs R-755 radial engine. A total of 400 of this model were produced.[6]
Super Ag Cat A/450
The G-164A became the main model starting with serial number 401. This model featured a 450 hp (335 kW) Pratt & Whitney R-985 radial engine along with a higher gross weight, increased fuel capacity, larger diameter wheels and improved brakes.[6]
Super Ag Cat A/600
The A/600 incorporated the same improvements embodied in the A/400, but was powered by a Pratt & Whitney R-1340 radial engine of 600 hp (450 kW).[6]
Super Ag Cat B/450
The B/450 improved on the "A" model by increasing the wingspan from 35 ft 11 in (10.95 m) to 42 ft 3 in (12.88 m). The fin and rudder were enlarged and the fuselage was also lengthened.[6] The upper wing was raised on the "B" model by 8 in (20 cm) to reduce aerodynamic interference between the wings and improve cockpit visibility.[4]
Super Ag Cat B/525
The B/525 incorporated the design improvements of the B/450, but was powered by a Continental /Page R-975 engine.[6]
Super Ag Cat C/600
The C/600 first flew in 1976. It is similar to the model B/450 but has its fuselage further stretched to incorporate a 500 US gal (1,892 l) agricultural hopper. The model is powered by a 600 hp (450 kW) Pratt & Whitney R-1340 radial engine.[6]
Turbo Ag Cat D/T
The "D" model is similar to the C/600 but replaced the radial piston engine with a Pratt & Whitney PT6A turboprop powerplant of 680 shp (507 kW).[6]
Turbo Ag Cat D/ST
The D/ST model is identical to the Turbo Ag Cat D/T, but the engine was a Pratt & Whitney PT6A turboprop powerplant of 750 shp (559 kW).[6]
Turbo Ag Cat D/SST
The D/SST model is identical to the Turbo Ag Cat D/T, but is powered by a Pratt & Whitney PT6A turboprop powerplant of 850 shp (634 kW).[6]
Ag Cat B-Plus/600
Introduced in 1982 the B-Plus/600 is powered by a Pratt & Whitney R-1340 of 600 hp (450 kW). It has the larger hopper of the "C" model.[6]
Ag Cat B-Plus/450
Also made available for the first time in 1982 the lowered powered B-Plus/450 is powered by a Pratt & Whitney R-985 of 450 hp (335 kW). This model was available only as a custom order.[6]
Marsh G-164 C-T Turbo Cat
This aftermarket conversion was created by re-engining the Super Ag Cat C/600 with a Garrett TPE331-1-101 turboprop, de-rated to 600 hp (450 kW).[6]
Mid-Continent King Cat
This aftermarket conversion of the Super Ag Cat C/600 replaced the 600 hp (450 kW) Pratt & Whitney R-1340 engine with a Wright R-1820-202A radial engine that produces 1,200 hp (895 kW).[6]
Ethiopian Airlines Eshet
License-built Ag-Cat Super B Turbine with local content from 1986.[9]

Aircraft on display[edit]

Specifications (G-164B Super B Turbine)[edit]

Data from Jane's Civil and Military Aircraft Upgrades 1994–95[10]

General characteristics


See also[edit]

Aircraft of comparable role, configuration and era
Related lists


  1. ^ a b Wood, Derek: Jane's World Aircraft recognition Handbook, page 460. Jane's Publishing, 1983. ISBN 0-7106-0202-2
  2. ^ a b c Smithsonian National Air and Space Museum (n.d.). "Grumman C-164 Ag-Cat". Retrieved 12 May 2010. 
  3. ^ a b c Schweizer, William: The Ageless Ag-Cat: The Forty-year History of the Ag-Cat Agricultural Airplane, Rivilo Books, 1995 ISBN 0-9630731-1-7
  4. ^ a b c d Montgomery, MR & Gerald Foster: A Field Guide to Airplanes - Second Edition, page 14. Houghton Mifflin Publishing, 1992. ISBN 0-7232-3697-6
  5. ^ a b Federal Aviation Administration (February 2001). "Type Certificate Data Sheet No. 1A16" (PDF). Retrieved 1 January 2011. 
  6. ^ a b c d e f g h i j k l m n Taylor John WR: Jane's Pocket Book Light Aircraft - Second Edition, page 215. Jane's Publishing Company, 1982. ISBN 0-7106-0195-6
  7. ^ "FAA Registry - Aircraft - Make / Model Inquiry". faa.gov. Retrieved 10 August 2015. 
  8. ^ "National Agricultural Aviation Association". agaviation.org. Retrieved 10 August 2015. 
  9. ^ Lambert 1994, p. 70
  10. ^ Michell 1994, pp. 398–399.
  • Lambert, Mark, ed. (1994). Jane's All the World's Aircraft 1994-95. Coulsdon, Surrey, United Kingdom: Jane's Information Group. ISBN 0-7106-1160-9. 
  • Michell, Simon. Jane's Civil and Military Aircraft Upgrades 1994-95. Coulsdon, UK:Jane's Information Group, 1994. ISBN 0-7106-1208-7.

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Grumman_Ag_Cat — Please support Wikipedia.
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38 news items

Timaru Herald

Timaru Herald
Wed, 09 Dec 2015 15:30:21 -0800

Flying as high as 12,000 feet, the pair along with Rhodes' husband Garry braved the cold as the temperature hovered around 0 degrees Celsius, in a Grumman Ag-Cat G-164A aircraft. Diana Rhodes at the Pukaki Airport set to repeat her father's pioneering ...

The Daily Tribune

The Daily Tribune
Sat, 22 Aug 2015 22:44:01 -0700

Waterford resident Milard Squire peers into the engine compartment of a Grumman Ag-Cat on Sunday, Aug. 23, at the Oakland County International Airport Open House and Air Show. John Turk-The Oakland Press. By John Turk, john.turk@oakpress.com, ...

The Canberra Times

The Canberra Times
Thu, 06 Aug 2015 17:59:00 -0700

The wreckage of light plane crash south of Canberra Thursday. Photo: Kym Bradley. An ACT Policing spokeswoman said the 49-year-old pilot, who was the only person on board the 1974 G164B Grumman AG Cat, lost altitude after take-off and crashed.

Monroe News Star

Monroe News Star
Tue, 14 Jul 2015 06:18:45 -0700

30 hours dual/solo Citabria, Piper Pawnee, Cessna 188, Grumman Ag Cat. •Tail Wheel Endorsement. Basic Ag Course. 35 hours solo Citabria. Time building. 10 hours dual Mooney M20C. Commercial Prep. Financial assistance is available for those who ...

AOPA Pilot

AOPA Pilot
Wed, 27 May 2015 15:26:08 -0700

In announcing the cancellation on May 25, Ladies Love Taildraggers Fly-in organizer Judy Birchler said the latest round of storms tore a cupola from the top of the Sulphur Springs airport's terminal building and blew a Grumman Ag Cat onto a fuel truck.

Your Houston News

Your Houston News
Tue, 09 Jun 2015 10:56:08 -0700

Soucy modified a Grumman Ag Cat bi-plane traditionally used for crop dusting in 1988 and named it the “Showcat.” It's on this plane that Soucy's show partner, Teresa Stokes, performed her breathtaking wing walking routine. The largest plane in the show ...
Edwards Air Force Base
Wed, 25 Mar 2015 14:22:30 -0700

3/25/2015 - LANCASTER, Calif. -- All eyes were on the sky at the second annual L.A. County Air Show March 21-22. The festivities started the night before with a pyrobatic night show and concert featuring country artist Craig Morgan at the Antelope ...

Columbus Telegram

Columbus Telegram
Thu, 04 Sep 2014 17:26:06 -0700

The company specializes in the Grumman Ag Cat, an ag aerial spray plane that got its start in the 1950s. Storm's long-range goal is to build the plane in David City, he said, but until then he said the company would continue to be involved in building ...

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