Cessna 336 / 337 Skymaster Supplemental Type Certificates (STCs)

196 STCs approved for the Cessna 336 / 337 Skymaster (337G Super Skymaster) 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 This list is for research convenience and may be incomplete or out of date.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 Cessna 336 / 337 Skymaster 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
SA02511SE	Installation of replacement fuel quantity indicator sending unit(s) — CiES Inc.	2026-03-16
SA02738CH (PAGE 5)	Installation of L-3 Communications Avionics Systems — Acron Aviation Inc.	2025-04-01
SA04046CH Page 1	Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) — Acron Aviation Inc.	2025-04-01

+ 193 more STCs for the Cessna 336 / 337 Skymaster family.

The complete, searchable Supplemental Type Certificates list — with in-app PDF viewing and a combined download — is part of AeroTell.

See all 196 STCs in the AeroTell app →