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Aircraft STC directory

Textron Aviation E33C STCs

The Jun 30, 2026 FAA DRS snapshot contains 14 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation E33C. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

14
listed Current at snapshot
10
holder directories
7
modification categories
Oct 13, 2023
latest recorded revision

Modification demand surface

Other aircraft modifications4
Aircraft structures2
Landing gear and brakes2
Propellers2
Engine and powerplant2
Fuel systems1
Electrical systems1

Recorded holders

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

Recently revised E33C STCs

Showing the 14 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