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

Hartzell Engine Technologies

Named as the FAA publishes it on its approvals.

Approved to make 2 classes of equipment. FAA spelling: Hartzell Engine Technologies.

Equipment approvals technical standard order authorisations

2017-12-20TSO-C20 · COMBUSTION HEATERS · *, *, * · other and general
2016-06-13TSO-C20 · COMBUSTION HEATERS · Combustion Heater, Combustion Heater, Combustion Heater · cabin, seats and restraints

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.