STC ST04198AT
FAA DRS lists ST04198AT as Current · Issued, held by Stevens Aviation Inc., for Learjet 35 and Learjet 35A (C-21A). Recorded change: Installation of a single Universal Avionics UNS-1Lw Flight Management System (FMS) with LPV monitor to provide WAAS capability. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST04198AT 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 35 and Learjet 35A (C-21A). Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related avionics STCs
Installation of Collins FDS-2000 Flight Display System (FDS).
FAA holder: Duncan Aviation Inc
Installation of Matsushita Avionics Systems MPES MK II Video Entertainment System.
FAA holder: Delta Engineering
Installation of Sextant AFDS 95-1 autopilot system for IFR operations.
FAA holder: Thales Avionics Inc.
FAA record reference
- STC number
- ST04198AT
- Product
- Aircraft · Small/Large Airplane
- Country
- United States
- Application date
- September 29, 2010
- Revision date
- February 6, 2015
- CFR references
- Part 21, Part 25, Part 26, Part 36