Aircraft STC directory
Textron Aviation 65-A90-4 STCs
The Jun 30, 2026 FAA DRS snapshot contains 12 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 65-A90-4. 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 65-A90-4 STCs
Showing the 12 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
Remove existing Pratt & Whitney Canada PT6A-20 engines and install PT6-21, -28, or -34 engines.
FAA holder: CenTex Aerospace Inc.
Installation of replacement fuel quantity indicator sending unit(s).
FAA holder: CiES Inc.
Installation of the Mid-Continent Instruments & Avionics MD23 FLEX Custom Function Display (CFD).
FAA holder: Mid-Continent Instruments and Avionics
Installation of the Concorde RG-380E/K series VRSLA batteries in airplanes listed on the attached FAA approved Model List (AML).
FAA holder: Aero-Mach Wilco LLC
Installation of an S-TEC 01326 Digital Flight Control System (DFCS).
FAA holder: S-TEC Corporation
Installation of Bendix-King KLN 88 LORAN C system.
FAA holder: Honeywell International Inc
Installation of SMR Technologies pneumatic de-icer models.
FAA holder: SMR Technologies Inc
Convert left- or right-side cockpit window into a crew door and disconnect pressurization system.
FAA holder: Resource Aircraft Conversions
Installation of Aluminum Aileron skins in place of Magnesium Aileron skins.
FAA holder: SRS Aviation, LLC.