Type certificate E26EA
Held today by Lycoming Engines, earlier by Textron Lycoming, Avco Corporation. It covers 6 models; about 81 aircraft on the U.S. register are built to the designs it names. Last revised November 4, 2010 (revision 5). 17 FAA orders name its designs, and 24 approved modifications build on it.
Models under this certificate 6
TO-360-C1A6D, TO-360-A1A6D, LTO-360-A1A6D, LTO-360-E1A6D, TO-360-F1A6D, TO-360-E1A6D
Engine series
Lycoming LTO-360-E1A6D 1 aircraftLycoming TO-360-A1A6D 1 aircraftLycoming TO-360-C1A6D 4 aircraftLycoming TO-360-E1A6D 1 aircraftLycoming TO-360 series 74 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
2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2012-03-272012-03-07 · Carburetor · engine
2011-07-132011-13-03 · Turbocharger Turbine · engine
2010-04-192010-07-08 · Turbochargers · engine
2004-06-252004-10-14 · Crankshaft gear · engine
2002-07-032002-12-07 · Oil Filter Converter Plate Gasket or the Converter Plate Kit · engine
1998-03-3098-02-08 · Crankshaft · engine
Approved modifications 24 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/E26EA.json.