Installation of ALCOR true-flow/ totalizer system.
FAA holder: Alcor LLC
Aircraft STC directory
The Jun 30, 2026 FAA DRS snapshot contains 34 selected supplemental type certificates with status Current whose public applicability data names the Cessna Aircraft 404. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
Showing the 34 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
FAA holder: Alcor LLC
FAA holder: Michelin North America Inc.
FAA holder: Genesys Aerosystems Inc.
FAA holder: Honeywell International Inc
FAA holder: Seaton Engineering Corp.
FAA holder: Air Comm Corporation
FAA holder: SMR Technologies Inc
FAA holder: Paul/Lanna Egan LLC
FAA holder: Aviation Management Services, Inc
FAA holder: Aero Twin Inc
FAA holder: Icarus Avionics, LLC
FAA holder: Aviation Fabricators Inc
FAA holder: VNS Incorporated
FAA holder: P2 Incorporated
FAA holder: Lord Corporation
FAA holder: Aerosonic Corporation
FAA holder: Aerosonic Corporation
FAA holder: Scandinavian Avionics Design GmbH
FAA holder: SMR Technologies
FAA holder: Insight Instrument Corporation
FAA holder: Rosen Sunvisor Systems LLC
FAA holder: Avidyne Corporation
FAA holder: Garmin AT Inc.
FAA holder: Heliarc Welding Service Inc.
FAA holder: Rosen Sunvisor Systems LLC
FAA holder: Avidyne Corporation
FAA holder: Burns Richard G
FAA holder: SMR Technologies
FAA holder: Advanced Aero Safety Inc.
FAA holder: Steinbach & Associates, Inc.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation