STC SA4591NM-D
FAA DRS lists SA4591NM-D as Current · Reissued, held by Learjet Inc., for Learjet Learjet 55. Recorded change: Installation of a Universal CVR 80 cockpit voice recorder. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
SA4591NM-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 Learjet 55. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related other aircraft modifications STCs
Installation of a passenger step and baggage compartment.
FAA holder: Apical Industries, Inc. dba Dart Aerospace
Installation of Challenger Reusable Air Filter.
FAA holder: Challenger Aviation Products Inc.
FAA record reference
- STC number
- SA4591NM-D
- Product
- Aircraft · Small Multi-Engine
- Country
- United States
- Application date
- June 11, 1990
- Revision date
- December 23, 2015
- CFR references
- Part 21