Installation of Garmin GFC 600 Automatic Flight Control System.
FAA holder: Garmin International Inc.
Aircraft STC directory
Textron Aviation C90 STCs
The Jun 30, 2026 FAA DRS snapshot contains 46 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation C90. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
46
listed Current at snapshot
31
holder directories
12
modification categories
May 14, 2026
latest recorded revision
Modification demand surface
Recorded holders
Honeywell International Inc4BHE & Associates LTD33S Certification LLC2Aviation Fabricators Inc2Maxcraft Avionics Ltd.2Acron Aviation Inc.2Raisbeck Engineering Inc.2Lifeport, Inc2Garmin International Inc1Luma Technologies LLC1Icarus Aero Inc.1Metrea Special Aerospace ISR Inc.1Aircraft Systems and Manufacturing Inc1CenTex Aerospace Inc.1CiES Inc.1BLR Aerospace LLC.1Aero-Mach Wilco LLC1Avcon Industries Inc1Mid-Continent Instrument Co. Inc.1PWI Inc.1
Recently revised C90 STCs
Showing the 46 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
Replacement of the Halon Type 1211 portable fire extinguisher with the Halotron BrX portable fire extinguisher.
FAA holder: Cessna Duesseldorf Citation Service Center GmbH
Installation of King Air Belly Payload Mount.
FAA holder: Icarus Aero Inc.
The Installation of the Parker-Meggitt iPRESS™ System.
FAA holder: 3S Certification LLC
Part Fabrication and Installation of Arm Ledge System and Table Assembly for aircraft cabin interior.
FAA holder: Aviation Fabricators Inc.
Installation of automatic dependent surveillance- broadcast( ADS-B) Out.
FAA holder: BHE & Associates Ltd.
Upgrade previously installed Collins Aerospace Radar Altimeter.
FAA holder: BHE & Associates Ltd.
Installation of exhaust gas extractors on Pratt & Whitney Canada PT6A-21, -28, -29, -34, -34B, -135, or -135A turboprop engines.
FAA holder: Metrea Special Aerospace ISR Inc.
Installation of an Avionica MK-III mini Quick Access Recorder (QAR) and optional 4G or LTE Avionica\nCellular Module (avCM.
FAA holder: Aircraft Systems and Manufacturing Inc.
Installation of winglets and related system changes.
FAA holder: BLR Aerospace LLC
Installation of Butterfield Industries Oil Residue Collection System, kit Part Number BI 2001-1.
FAA holder: Raisbeck Engineering Inc.
Installation of an AV557C cockpit voice recorder.
FAA holder: Honeywell International Inc
Installation of an AV557D cockpit voice recorder.
FAA holder: Honeywell International Inc
Mk VI Ground Proximity Warning System installed.
FAA holder: Honeywell International Inc
Installation of Window Shade Assembly as the replacement for OEM polarized window assemblies.
FAA holder: Aviation Fabricators Inc
Installation of a Mid-Continent MD835( ) Lithium Ion Battery.
FAA holder: Mid-Continent Instrument Co. Inc.
Installation of an S-TEC 01326 Digital Flight Control System (DFCS).
FAA holder: S-TEC Corporation
Install King KFC-250 flight control system (3-axis) using 3-inch or 4-inch indicators.
FAA holder: Honeywell International Inc
Installation of the Send Solutions Airtext Router in 14 CFR Part 23 Aircraft.
FAA holder: 3S Certification LLC
Installation of Teledyne Battery Products P/N 7638-44 Lead-Acid Battery.
FAA holder: Teledyne Battery Products
Installation of Pitot Heat Failure Warning System.
FAA holder: Kenn Borek Air Limited
Installation of an Auxiliary Aural Alert System.
FAA holder: Hawker Pacific Pty Ltd
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 the Hyperion/Orion LED wing tip and tail light assemblies.
FAA holder: KAD Aerospace Corp.
Installation of SMR Technologies pneumatic de-icer models.
FAA holder: BE Aerospace Inc. DBA SMR Technologies, Inc.
STC for the installation of a single Universal Avionics Radio Tuning Unit (RTU).
FAA holder: Textron Aviation Inc
Installation of an Avidyne EXP5000 Primary Flight Display (PFD).
FAA holder: Star Aviation
Installation of ACSS Traffic Collision Avoidance System TCAS II (3000 Version).
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC