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

Grogan Don

Named as the FAA publishes it on its approvals.

Holds 1 approved modification, most of them for the Hiller UH-12. FAA spelling: Grogan Don.

Approved modifications 1 · newest first

Hiller UH-12 1
1992-07-15SH5729NM · Full flow oil filter system · UH-12E, UH-12E-L

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.