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Avionics

STC ST00228DE-D

FAA DRS lists ST00228DE-D as Current · Reissued, held by Learjet Inc., for Learjet Learjet 35, Learjet Learjet 35A (C-21A), and Learjet Learjet 36, and 3 more aircraft configurations. Recorded change: Installation of a Universal Avionics Systems Corporation UNS-1M Navigation Management System (NMS). Snapshot dated June 30, 2026.

FAA-listed holder
Learjet Inc.
Aircraft configurations
6
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of a Universal Avionics Systems Corporation UNS-1M Navigation Management System (NMS).

ST00228DE-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 35, Learjet Learjet 35A (C-21A), and Learjet Learjet 36, and 3 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet Learjet 35A10CELearjet Learjet 35A (C-21A)A10CELearjet Learjet 36A10CELearjet Learjet 36AA10CELearjet Learjet 35 SeriesA10CELearjet Learjet 36 SeriesA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet Learjet 35 and Learjet Learjet 35A (C-21A), and 4 more aircraft configurations model, serial range, and configuration?
  2. 02Which part numbers, software versions, interfaces, and manual changes apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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