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Aircraft STC directory

Textron Aviation G33 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 G33. 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
Feb 28, 2026
latest recorded revision

Modification demand surface

Engine and powerplant3
Other aircraft modifications3
Aircraft structures3
Electrical systems2
Landing gear and brakes2
Fuel systems1
Propellers1

Recorded holders

CheckSix AeroSolutions, LLC2Marsh Brothers Aviation Inc2D'Shannon Products Ltd.2General Aviation Modifications Inc.2Cygnet Aerospace Corp.1McFarlane Aviation LLC1Peregrine1Aero-Mach Wilco LLC1Gallagher Aviation LLC1TALCO Aviation Corp.1

Recently revised G33 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