Grumman / Schweizer Ag-Cat Supplemental Type Certificates (STCs)

19 STCs approved for the Grumman / Schweizer Ag-Cat (G-164 Ag-Cat, Ag-Cat B, Ag-Cat C, Ag-Cat D, Super Ag-Cat (ag biplane)) family · FAA quick reference

Quick reference only — not a compliance record. This list is for research convenience and may be incomplete or out of date. It is not an airworthiness compliance determination. Always verify against the official FAA record, and check directly with the FAA before relying on it. ADs are mandatory; STCs indicate approval for the type (not installation on a specific airframe); SAIBs are advisory.

Supplemental Type Certificates (STCs) approved for the Grumman / Schweizer Ag-Cat type — FAA-approved modifications available for this aircraft family. Approval for the TYPE does not mean a given STC is installed on any individual airframe (that lives in the logbooks/337s).

Document	Title / Subject	Date
SA02033AT (PAGE 1)	Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line (47J series w stc's SH4-235SW, SH4-826SW or SH479SW) — M-20 Oil Separators LLC	2006-04-10
SA01282NY	Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. — Airwolf Filter Corporation	2001-01-23
SA4503NM (Page 1)	Install Ceconite covering material. — Ceconite Division of Poly-Fiber Inc	2011-02-25

+ 16 more STCs for the Grumman / Schweizer Ag-Cat family.

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