The Grumman G-164 Ag Cat was certificated for agricultural work in January 1959, following
development from the prototype that was flown first on 22 May 1957. Production aircraft
were assembled by the Schweizer Aircraft Corporation between 1959 and 1979 under sub-contract
from Grumman. In 1981, Schweizer bought the design and production rights. Until they sold the
manufacturing rights to AgCat Corporation in 1995, the AgCat remained in production with
Schweizer.
The 1966-built Grumman G.164A Agcat c/n 427 (ex N906X, SE-ENW) was registered PH-DAP in the Netherlands
with the agricultural company Dutch Air Sprayers on 10 June 1969. The Grumman G.164A Ag Cat's
SE-ENW & SE-ENT arrived in April 1969 by car at Groningen-Eelde airfield in the Netherlands.
They were brought in flying condition and registered PH-DAP & PH-DAS. The PH-DAP was photographed
during the Eelde Airshow on 30 May 1970: the aircraft showed a great dogfight together with and against sistership
PH-DAS. On 31 August 1971, the Dutch registrations of both Ag Cats were cancelled after the defunct of Dutch
Air Sprayers. The aircraft were re-registered in the USA as N33508 and N33509 on 16 June 1972.