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

Horizon Helicopters

Holds 2 type certificates (3 models). FAA spelling: Horizon Helicopters.

Type certificates 2

H1NWAircraft · HH-43F, HH-43B/F
H14WEAircraft · HH43B/F

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