Aircraft STC directory
Textron Aviation 425 STCs
The Jun 30, 2026 FAA DRS snapshot contains 8 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 425. 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 425 STCs
Showing the 8 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
Installation of American Aviation Inc. redesigned engine exhaust stacks.
FAA holder: American Aviation Inc.
Installation of Bendix/King KMD 550/850 Multi-Function Display, with optional KLN 94 Global Positioning System, KGP 560 General Aviation Enhanced Ground Proximity Warning System, RDR 2000 Weather Radar System and KMH 880 Multi-Hazard Awareness System or KTA 870 Traffic Awareness System.
FAA holder: Honeywell International Inc
Installation of a Strobe Light System.
FAA holder: Reds Aircraft Service Inc.
Installation of a Pitot Heat System Cockpit Indicator Lights.
FAA holder: Reds Aircraft Service Inc.
Installation of an S-TEC 01326 Digital Flight Control System (DFCS).
FAA holder: S-TEC Corporation
Installation of a Taxi Light System.
FAA holder: Reds Aircraft Service, Inc.
Electronic torque indication system upgrade.
FAA holder: Blackhawk Modifications Inc.