Skip to content

Aircraft STC directory

Cessna Aircraft 170A STCs

The Jun 30, 2026 FAA DRS snapshot contains 67 selected supplemental type certificates with status Current whose public applicability data names the Cessna Aircraft 170A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

67
listed Current at snapshot
41
holder directories
12
modification categories
Apr 1, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications16
Engine and powerplant15
Avionics7
Propellers5
Fuel systems5
Flight controls4
Landing gear and brakes4
Cabin and interiors4
Aircraft structures3
Electrical systems2
Aircraft connectivity1
Safety and emergency equipment1

Recorded holders

Del-Air3International Cessna 170 Association3Steve's Aircraft3D'Shannon Products Ltd.3Curry Aviation LLC2Avidyne Corporation2Brittain Industries, Inc2BAS Inc2Acron Aviation Inc.1Athena Aircraft, LLC1McFarlane Aviation LLC1Kaman Corporation Aircraft Wheel and Brake LLC1Genesys Aerosystems Inc.1Baumann Floats LLC1PECO Inc1Kenneth E. Morris and Lorraine R. Morris1Kenmore Air Harbor Inc1Airwolf Filter Corporation1AMSAFE Inc.1Concorde Battery Corporation1

Recently revised 170A STCs

Showing the 67 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA3-13Engine and powerplant

Install 170 hp Lycoming O-340-A1A engine and Hartzell HC-82XL-1DB/8433-12 propeller according to Doyn data listed on Engineering Releases 100 (3/22/58), 1010 (3/16/57), 1011 (8/28/57), 1012 (7/15/57), 1014 (3/30/57), 1050 (7/13/57), 1051 (& DCN 1, 12/10/57), 1052 (7/19/57), 1053 (7/19/57), 1099 (3/22/58), and Instructions (2 sheets, undated) Data required for parts manufacture: As listed on Engineering Releases 1001 (1/18/57), 1002 (12/21/57), 1003 (5/1/57), 1004 (7/13/57), 1005 (7/12/57), 1006 (3/30/57), 1007 (4/12/57), 1008 (2/27/57), 1009 (10/23/57), 1015 (2/25/56).

FAA holder: D'Shannon Products Ltd.

View record
SA3-672Engine and powerplant

Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A.

FAA holder: D'Shannon Products Ltd.

View record
SA293NWOther aircraft modifications

Installation of Franklin 6A-350-C1 or 6A-350-C2 engines, Hartzell HC-C2YF-1BF/F8459A -4 to -8, HC-C2YF-1BF/F8459A-4Q to -8Q, or McCauley 2A31C21/84S-4 to -8 propellers in accordance with Seaplane Flying, Inc. Assembly and Installation Instructions SF 20690, SF20821, or SF 20820, on Cessna Models 170A, 170B, 172, 172A, 172B through P, 175, 175A, 175B and 175C as defined in AML. 2.) Installation of Franklin 6A-350-C1R engines, Hartzell HC-C2YF-1BF/F8459A-4 to -8, HC-C2YF-1BF/F8459-4Q to -8, McCauley 2A31C21/84S-4 to -8 or 2A34C201/90DA-10 to -14 propellers in accordance with Seaplane Flying Inc. Assembly and Installation Instructions SF 20690 on Cessna Models 170A, 170B (Serial Numbers 20267 to 26504) as defined in AML.

FAA holder: Franklin Aircraft Engines Inc.

View record