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

Hamilton Sundstrand Aerospace

Named as the FAA publishes it on its approvals.

Approved to make 2 classes of equipment. FAA spelling: Hamilton Sundstrand Aerospace.

Equipment approvals technical standard order authorisations

2001-01-28TSO-C77 · Gas Turbine Auxiliary Power Units · *, * · engine
2001-01-28TSO-C77A · Gas Turbine Auxiliary Power Units · *, *, * · engine

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.