Beechcraft Model 18 Twin Beech Supplemental Type Certificates (STCs)

97 STCs approved for the Beechcraft Model 18 Twin Beech (G18S) 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 This list is for research convenience and may be incomplete or out of date.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 Beechcraft Model 18 Twin Beech 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
SA02738CH (PAGE 6)	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
SA7965SW	Application of fabric and polyurethane finishing system. — Shady Aviation LLC	2025-03-01

+ 94 more STCs for the Beechcraft Model 18 Twin Beech family.

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

See all 97 STCs in the AeroTell app →