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

Simmons Aviation Services LLC

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Piper PA-25 Pawnee. FAA spelling: Simmons Aviation Services LLC.

Approved modifications 2 · newest first

Piper PA-25 Pawnee 2
2011-12-28SA316BO · Modification of a fuel system by the installation of a fuel pump and auxiliary fuel tank for the transfer of fuel... · PA-25, PA-25-235, PA-25-260
2011-11-09SA00315BO · Modification of a fuel system by the installation of a fuel pump and auxiliary fuel tank for the transfer of fuel... · PA-25-235

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.