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

Riddell Flying Service, INC.

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Ayres Corporation S-2. FAA spelling: Riddell Flying Service, Inc..

Approved modifications 2 · newest first

Ayres Corporation S-2 1Air Tractor Inc AT-502 1
2000-08-16SA09189AC · Installation of a Walter M601E-11 turboprop engine and a Avia Hamilton Standard VJ8.510AG propeller . · AT-501, AT-502
2000-08-16SA09342SC · Installation of Walter M601E-11 turboprop engine and AVIA-Hamilton Standard VJ8.510AG or VJ8.510 propeller. · S2R-R1340

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.