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

Midwest Express Airlines

Named as the FAA publishes it on its approvals.

Holds 6 approved modifications, most of them for the Mcdonnell Douglas DC-9. FAA spelling: Midwest Express Airlines.

Approved modifications 6 · newest first

Mcdonnell Douglas DC-9 5Mcdonnell Douglas Aircraft Co MD-88 1Douglas DC-9 1
2003-10-23ST00231LA-D · Installation of PTC Model 950 first class seats modified for aft facing and provisions only modification for GTE... · DC-9-11, DC-9-12, DC-9-13
2002-09-18ST01179LA · Installation of interior modification. · DC-9-81 (MD-81)
2001-03-05SA9048NM-D · Installation of PTC model 850 business class seats with provisions only modification for GTE Airfone Installation.... · DC-9-10 Series, DC-9-32
2001-03-05ST00287LA-D · Installation of PTC model 950 business class seats with provisions only modification for GTE Airfone Installation... · MD-88
1998-11-12ST01729AT · Install business class seats. · DC-9-81 (MD-81), DC-9-82 (MD-82)
1998-09-04ST00927CH · Installation of a Honeywell electronic flight instrument system, digital flight guidance computer, and central aural... · DC-9-82 (MD-82), DC-9-81 (MD-81)

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.