Aircraft STC directory
Cessna Aircraft 320 STCs
The Jun 30, 2026 FAA DRS snapshot contains 36 selected supplemental type certificates with status Current whose public applicability data names the Cessna Aircraft 320. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
Modification demand surface
Recorded holders
Recently revised 320 STCs
Showing the 36 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
Fabrication and installation of new or replacement of existing instrument panel lights dimmer control.
FAA holder: Seaton Engineering Corp.
Installation of 34-gallon auxiliary fuel tanks in each wing.
FAA holder: OCR Aviation
Installation of Brittain Up-Command Signal Adapter Kit.
FAA holder: Brittain Industries, Inc
Installation of a Voice Alert System.
FAA holder: Aircraft Components Inc
Replacement of certain Goodrich pneumatic deicer boots.
FAA holder: B/E Aerospace Inc. dba SMR Technologies, Inc.
Installation of Brittain Model B-4A flight control system.
FAA holder: Brittain Industries, Inc
Installation of Brittain Industries, Inc. Model B2C Flight Control System.
FAA holder: Brittain Industries, Inc
Install auxiliary baggage compartment and adjustable seat modification.
FAA holder: M7 Aerospace LLC
Installation of a stainless steel heat shield assembly.
FAA holder: Straight Flight Inc
Installation of Hoskins High Intensity Position Light system. A supplemental condenser discharge (strobe) lighting system. Consists of red/green/white wing tip and tail position lights, with or without white, top and bottom fuselage lights, plus a power supply.
FAA holder: BF Goodrich Aerospace
Installation of National AirParts Model N300 alternators as replacement for belt-driven generators in accordance with National AirParts Inc., Document Number NAPI310, Cessna 310/320 Alternator Conversion , Initial Revision, dated 9/30/96 or later FAA Approved Revisions.
FAA holder: National Air Parts Inc
Installation of Continental IO-520-E derated engines and McCauley D3AF32C87/82NC-6 or -8 propellers. Modification to be accomplished in accordance with Colemill Enterprises, Inc. Drawing AC5800 Rev. A and AC5801 Rev A and Installation Instructions dated 7 July 1972 and revised 21 August 1972. Owner s Manual Supplement dated 21 August 1972 included in data.
FAA holder: Mike Jones Aircraft Sales Inc.
Installation of fuel cell modifications consistent.
FAA holder: FFC Manufacturing
Installation of Woodward Type II electronic propeller synchronizer or synchrophaser system. (G-44A MODIFIED COLEMILL - STC 2-13) (500-A modified - Colemill STC SA340SO).
FAA holder: Ontic Engineering and Manufacturing Inc.
Installation of Great Lakes windshield P/N W-2070, W/T-2070 or WK-2070.
FAA holder: Great Lakes Aero Products Inc
Installation of 30 gallon auxiliary fuel tank in baggage compartment.
FAA holder: Eaglejet Aviation Inc.
Installation of Graphic Engine Monitors (GEM) Models GEM-610 and GEMINI 1200.
FAA holder: Insight Instrument Corporation
Kit No. 2014X for 12-inch RCA AVQ-45, AVQ-47, AVQ-50, AVQ-55 and 12-inch Collins WP-103 radar antenna.
FAA holder: Saint-Gobain Performance Plastics Corp
Installation of sun visor.
FAA holder: Rosen Sunvisor Systems LLC
Installation of a left-hand exhaust stack assembly.
FAA holder: Heliarc Welding Service Inc.
Installation of various de-icer wire harnesses.
FAA holder: SMR Technologies
Installation of Aircraft Noise Control (ANC) System.
FAA holder: Quiet Flight LLC
Install vacuum pump cooling shroud.
FAA holder: RAM Aircraft Limited Partnership
Installation of one-piece windshield.
FAA holder: Cee Bailey's Aircraft Plastics
Installation of an engine failure indicator system, also referred to as a 'low Thrust Detector system.'.
FAA holder: Advanced Aero Safety Inc.