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Type certificate E-284

Held today by Lycoming Engines, earlier by Textron Lycoming, Avco Corporation. It covers 23 models; about 5 aircraft on the U.S. register are built to the designs it names. Last revised June 23, 2010 (revision 10). 17 FAA orders name its designs, and 20 approved modifications build on it.

Models under this certificate 23

GSO-480-B1B3, IGSO-480-A1A6 (O-480-3), IGSO-480-A1B6, GSO-480-B2H6, GSO-480-B1F6, GSO-480-B1E6, GSO-480-B1C6, IGSO-480-A1C6, IGSO-480-A1F3, GSO-480-A1C6, GSO-480-A2A6, GSO-480-B2C6, GSO-480-B1J6, IGSO-480-A1F6, GSO-480-B1B6 (O-480-1), IGSO-480-A1E6, IGSO-480-A1G6, GSO-480-A1A6, GSO-480-B1G6, GSO-480-B2D6, GSO-480-B1A6, GSO-480-B2G6, IGSO-480-A1D6

Engine series

Lycoming GSO-480-B1B3 1 aircraftLycoming GSO-480-B1J6 3 aircraftLycoming IGSO-480-A1E6 1 aircraft

The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.

FAA orders on these designs 17 · newest first

2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2012-03-272012-03-07 · Carburetor · engine
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2004-06-252004-10-14 · Crankshaft gear · engine
1997-08-1297-15-11 · Cylinder kits · engine
1992-07-1092-12-05 · Piston Pins · engine
1991-05-2890-04-06 R1 · Propeller Governor External Oil Line · engine
1981-02-1181-03-05 · Mixture Control Shaft Assembly · engine

Approved modifications 20 · companies holding the most

Continental Motors, INC. 4Surefly Partners LTD. 1Shell Development CO 1Shadin Avionics 1Precise Flight INC 1Phillips Petroleum CO 1Perrigo & Steele Aircraft Engr Company 1Mobil Research & Development CORP 1

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/E-284.json.