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

Aircraft & Rotorcraft Products (Arp) INC

Holds 1 approved modification, most of them for the Aero Commander 100. FAA spelling: Aircraft & Rotorcraft Products (ARP) Inc.

Approved modifications 1 · newest first

2002-12-05SA489EA · Installation of ARP Inc. carburetor ice detection system · F.260, F.260B, F.260C

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.