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

Potter Aircraft Svc INC

Named as the FAA publishes it on its approvals.

Holds 3 approved modifications, most of them for the Douglas C-54. FAA spelling: Potter Aircraft Svc Inc.

Approved modifications 3 · newest first

Douglas C-54 1
1966-07-19SA1117WE · Wing flap operated aural warning system. · DC-4, C54-DC (Navy R5D)
1960-01-01SA4-654 · Modification of nacelle aft of firewall to fair-in structure in exhaust trough area on aircraft with Pratt & Whitney... · Lockheed 18
1960-01-01SA4-185 · DC3 exhaust collector ring with modified short stack and new carburetor heat muff assembly on Wright R-1820-56 engine. · Lockheed 18

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.