Type certificates · engine · current

Type certificate E00006NY

Held today by Lycoming Engines. It covers 17 models; about 1,265 aircraft on the U.S. register are built to the designs it names. Last revised January 12, 2023 (revision 10). 5 FAA orders name its designs, and 6 approved modifications build on it.

Models under this certificate 17

AEIO-390-A3B6, AEIO-390- A1A6, IO-390-A1A6, IO-390-A3A6, IO-390-A3B6, AEIO-390-A3A6, AEIO-390-A1B6, IO-390-A1B6, IO-390-C1A6, IO-390-C3A6, IO-390-C1B6, IO-390-C3B6, HIO-390-A1A, IO-390-D1A6, IO-390-D3A6, IO-390-D1B6, IO-390-D3B6

Engine series

Lycoming AEIO-390-A1B6 35 aircraft Lycoming HIO-390-X252 2 aircraft Lycoming IO-390-A1A6 20 aircraft Lycoming IO-390-A1B6 47 aircraft Lycoming IO-390-A3A6 1 aircraft Lycoming IO-390-C3B6 775 aircraft Lycoming IO-390-D3B6 73 aircraft Lycoming IO-390 series 312 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 5 · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine

2024-12-052024-21-02 · Engine (Reciprocating) · engine

2012-10-242012-19-01 · Crankshafts · engine

2012-02-242012-03-06 · Fuel servo diaphragm · engine

2009-02-092009-02-03 · Fuel injection servos · engine

Approved modifications 6 · companies holding the most

Surefly Partners LTD. 1 Hartzell Propeller INC. 1 General Aviation Modifications INC. 1 Electroair Acquisition CORP 1 Challenger Aviation Products INC. 1 B & C Specialty Products INC. 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/E00006NY.json.