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

Delong CORP.

Named as the FAA publishes it on its approvals.

Holds 2 type certificates (2 models). FAA spelling: DeLong Corp..

Type certificates 2

TC 2-555Aircraft · Boeing F4B4
TC AR-24Aircraft · Boeing YC-97

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.