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

Hamilton Sundstrand Power Systems

Named as the FAA publishes it on its approvals.

Approved to make 3 classes of equipment. FAA spelling: Hamilton Sundstrand Power Systems.

Equipment approvals technical standard order authorisations

2016-07-28TSO-C77B · GAS TURBINE AUXILIARY POWER UNITS · Software P/N 4508699, Application Software Version 01.00.000, APU System · engine
2016-02-09TSO-C77 · Gas Turbine Auxiliary Power Units · *, *, * · engine
2015-11-10TSO-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.