Piper PA-42 Cheyenne III / IV Supplemental Type Certificates (STCs)

102 STCs approved for the Piper PA-42 Cheyenne III / IV (PA-42-1000 Cheyenne 400LS) 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 This list is for research convenience and may be incomplete or out of date.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 Piper PA-42 Cheyenne III / IV 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
SA04046CH PAGE 2	Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) — Acron Aviation Inc.	2025-04-01
SA02738CH (PAGE 2)	Installation of L-3 Communications Avionics Systems — Acron Aviation Inc.	2025-04-01
SA01379WI	Installation of Dual Digital Altimeters and associated equipment to obtain Reduced Vertical Separation Minimum (RVSM) Airworthiness approval. — Cheyenne Tech	2024-10-31

+ 99 more STCs for the Piper PA-42 Cheyenne III / IV family.

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

See all 102 STCs in the AeroTell app →