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

Helicopter Aviation Services Corporation

Named as the FAA publishes it on its approvals.

Holds 3 approved modifications, most of them for the Bell 412. FAA spelling: Helicopter Aviation Services Corporation.

Approved modifications 3 · newest first

2015-05-20SH1044NE · Installation of a loud hailer mount. · 412
2015-05-20SH1043NE · Installation of an audio panel mount. · 412
2015-05-20SH1025NE · Installation of Bendix/King 660 flight management system, RDS84VP weather rader, and GC 360A radar graphics, and a... · 412

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.