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

Monaero Engineering

Named as the FAA publishes it on its approvals.

Approved to make 3 classes of equipment. FAA spelling: Monaero Engineering.

Equipment approvals technical standard order authorisations

2016-12-27TSO-C139a · AIRCRAFT AUDIO SYSTEMS AND EQUIPMENT · Aircraft Speaker · other and general
2003-07-23TSO-C57A · HEADSETS AND SPEAKERS · Headsets and Speakers, Headsets and Speakers, Headsets and Speakers · other and general
1990-01-01TSO-C57A · HEADSETS AND SPEAKERS · *, * · other and general

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.