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

Web Thomas Aircraft Sales

Holds 5 approved modifications. FAA spelling: Web Thomas Aircraft Sales.

Approved modifications 5 · newest first

1975-11-01SA4-217 · Main cabin floor structure. · Lockheed 18
1975-11-01SA4-72 · Radar nose for Bendix C-Band, Bendix X-Band, or RCA C-Band. · Lockheed 18
1975-11-01SA4-397 · Structural installation of flight line 24 P-001 seat. · Lockheed 18
1975-11-01SA4-216 · Picture window. · Lockheed 18
1975-11-01SA4-69 · Lockheed Model 18 modified to Learstar Mark II configuration. · Lockheed 18

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.