Aircraft STC directory
Textron Lycoming AVCO IO-540 Series STCs
The Jun 30, 2026 FAA DRS snapshot contains 9 selected supplemental type certificates with status Current whose public applicability data names the Textron Lycoming AVCO IO-540 Series. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
Modification demand surface
Recently revised IO-540 Series STCs
Showing the 9 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
Installation of fuel injector nozzles.
FAA holder: General Aviation Modifications Inc.
Miscellaneous engine cylinder replacement parts.
FAA holder: Continental Motors, Inc.
Installation of parts listed on Drawing List No. 8810-3, Rev 6.
FAA holder: Continental Motors, Inc.
Replacement of Lycoming starter with SKY-TEC 12 volt starter installed.
FAA holder: Hartzell Engine Technologies, LLC
Replacement of Lycoming starter with SKY-TEC 24-volt starter installed.
FAA holder: Hartzell Engine Technologies, LLC
Installation of AiResearch Turbosupercharger 406610-3. Approved for IO-540-J4A5 model.
FAA holder: GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services