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Aircraft STC directory

Textron Aviation F33C STCs

The Jun 30, 2026 FAA DRS snapshot contains 15 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation F33C. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

15
listed Current at snapshot
10
holder directories
7
modification categories
Nov 25, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications4Aircraft structures3Landing gear and brakes2Propellers2Engine and powerplant2Fuel systems1Electrical systems1

Recorded holders

Gallagher Aviation LLC2Marsh Brothers Aviation Inc2D'Shannon Products Ltd.2General Aviation Modifications Inc.2McFarlane Aviation LLC1CheckSix AeroSolutions, LLC1Peregrine1Aero-Mach Wilco LLC1Hartzell Propeller Inc1TALCO Aviation Corp.1

Recently revised F33C STCs

Showing the 15 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA493CHEngine and powerplant

Increase in maximum gross weight from 3600 lbs. to 3700 lbs. with installation of Continental I0-550-B engine in accordance with D'Shannon Products Installation Instruction 71-20-00, dated 10/20/88, or later FAA-approved revision; and installation of Cooling Air Baffles in accordance with D'Shannon Products Installation Instruction DSP1M95-2, dated 6/1/95, FAA-approved 6/21/95 or later FAA Approved revisions.

FAA holder: D'Shannon Products Ltd.

View record