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

Bertram Marvin L

Holds 1 approved modification. FAA spelling: Bertram Marvin L.

Approved modifications 1 · newest first

1960-01-01SA207WE · Removal of cabin doors for parachute jumping and aerial photography operations. · JR. SR-4

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.