Grumman G-164 Ag Cat

The Ag Cat, Grumman's agricultural biplane, type-certified in 1959 and built under contract by Schweizer, which bought the line outright in 1981 and built it until 1995: a radial engine, a chemical hopper between engine and cockpit and a structure built to survive low-level work. The G-164A (1966) has the 450 hp R-985; the G-164B (1974 on) a larger span and longer fuselage. The registry records the same aircraft under Grumman, Grumman-Schweizer and Schweizer names.

The variants

MODEL	YEARS	ACTIVE	TAILFAX SCORE	WHAT CHANGED
G-164	1957–1966	52	Partial 8.9/30	The original Ag Cat
G-164A	1957–1979	150	28.9/50	Same aircraft recorded under the Grumman-Schweizer name
G-164B	1974–1981	157	26/50	Same aircraft recorded under the Grumman-Schweizer name

Family fleet, active

359

FAA registry

NTSB events / 1,000, 10 yrs

119.8

43 events over 359 active aircraft, pooled across the family

Data as of: FAA registry Sep 28 · NTSB Oct 2 · scores Sep 30