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Aircraft STC directory

Textron Aviation 35-C33A STCs

The Jun 30, 2026 FAA DRS snapshot contains 19 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 35-C33A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

19
listed Current at snapshot
13
holder directories
8
modification categories
Feb 17, 2026
latest recorded revision

Modification demand surface

Other aircraft modifications5
Aircraft structures3
Fuel systems2
Electrical systems2
Landing gear and brakes2
Propellers2
Engine and powerplant2
Flight controls1

Recorded holders

CheckSix AeroSolutions, LLC2Gallagher Aviation LLC2Marsh Brothers Aviation Inc2D'Shannon Products Ltd.2General Aviation Modifications Inc.2Aerosport Fuel Cells, LLC1McFarlane Aviation LLC1Peregrine1Aero-Mach Wilco LLC1Hartzell Propeller Inc1TALCO Aviation Corp.1Honeywell International Inc1Cygnet Aerospace Corp.1

Recently revised 35-C33A STCs

Showing the 19 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