STC SA4-1578
FAA DRS lists SA4-1578 as Current · Reissued, held by SOUTHWESTERN AERO EXCHANGE INC., for Raytheon Aircraft D18C and Raytheon Aircraft D18S. Recorded change: Removal of the main cabin entrance door and installation of stair door. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
SA4-1578 identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Raytheon Aircraft D18C and Raytheon Aircraft D18S. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related cabin and interiors STCs
Installation of an interior reconfiguration.
FAA holder: AAR Engineering Services
Installation of video entertainment system.
FAA holder: Rockwell Collins Inc