STC ST00423DE-D
FAA DRS lists ST00423DE-D as Current · Amended, held by Learjet Inc, for Learjet 31, Learjet 35, and Learjet 35A (C-21A), and 2 more aircraft configurations. Recorded change: Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS). Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST00423DE-D 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: Learjet 31, Learjet 35, and Learjet 35A (C-21A), and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related safety and emergency equipment STCs
Installation of Floor Proximity Emergency Escape Path Marking System.
FAA holder: Bruce Aerospace Inc.
Installation of Floor Proximity Emergency Escape Path Marking System.
FAA holder: Bruce Aerospace Inc.
Installation of floor proximity emergency escape marking system.
FAA holder: Bruce Aerospace Inc.
Installation of floor proximity emergency escape path marking system.
FAA holder: Bruce Aerospace Inc.
FAA record reference
- STC number
- ST00423DE-D
- Product
- Aircraft · Small Multi-Engine
- Country
- United States
- Application date
- June 23, 2000
- Revision date
- January 31, 2006
- CFR references
- Part 21