The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Lycoming Engines, Operating Div. of Avco

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Mooney M-20. FAA spelling: Lycoming Engines, Operating Div. Of AVCO.

Approved modifications 2 · newest first

2014-03-19SA09695AC · Installation of Lycoming IO-390-A3A6 engine and Hartzell Model HC-C2YR-1BFP/F7497 or HC-C3YR-1RF/F7282 propeller · M20E, M20F, M20J
2009-06-16SA10944SC · Installation of a 210 HP Lycoming IO-390-A1A6 Engine · 177RG

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.