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

Dee Howard CO

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Douglas DC-8. FAA spelling: Dee Howard Co.

Approved modifications 2 · newest first

Douglas DC-8 1Boeing 727 1
1996-11-26SA8106SW · Installation of Collins Dual-86U EFIS, Dual Air Data ADC-85, Autopilot Flight Director-Collins APS-85, LTN-92 INS,... · DC-8-73, DC-8-71, DC-8-71F
1996-11-20SA7942SW · Installation of Collins dual electronic flight instrument system (EFIS) 86U-12, Smiths dual air data system,... · 727-100C Series, 727-200 Series, 727C Series

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.