Cessna 421 Golden Eagle Supplemental Type Certificates (STCs)

231 STCs approved for the Cessna 421 Golden Eagle (421A) 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 This list is for research convenience and may be incomplete or out of date.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 421 Golden Eagle 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
SA800EA	Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies — Whelen Aerospace Technologies	2026-06-12
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

+ 228 more STCs for the Cessna 421 Golden Eagle family.

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