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

Riddle Airlines INC

Holds 3 approved modifications, most of them for the Douglas DC-7. FAA spelling: Riddle Airlines Inc.

Approved modifications 3 · newest first

Douglas DC-7 3
1960-01-01SA30SO · Two emergency exits at stations437.9 - 460.5 from Type IV to Type III modified. · DC-7 Series
1960-01-01SA35SO · Access hole in horizontal stabilizer. · DC-7 Series
1960-01-01SA23SO · Observer's seat fuselage Station 55. · DC-7 Series

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.