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

Slingsby Sailplanes LTD.

Holds 2 type certificates (4 models). FAA spelling: Slingsby Sailplanes Ltd..

Type certificates 2

G5EUAircraft · Dart T.51, Dart T.51/17R, Dart T.51/17
G-20Aircraft · Skylark Type 41 Series 2

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.