Who holds what · as the FAA records the name

Siam Hiller Holdings INC.

Holds 5 type certificates (9 models). FAA spelling: Siam Hiller Holdings Inc..

Type certificates 5

6H1Aircraft · UH-12, UH-12A

6H2Aircraft · UH-12C, UH-12B

4H11Aircraft · UH-12E, UH-12E-L

H1WEAircraft · UH-12L4, UH-12L

4H10Aircraft · UH-12D

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.