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Avionics

STC ST02230SE

FAA DRS lists ST02230SE as Current · Amended, held by Butler National Corporation, for Learjet 24, Learjet 24A, and Learjet 24B-A, and 18 more aircraft configurations. Recorded change: The installation of dual Garmin GTX-33ES Mode-S transponders and single or dual Garmin GTN 650/750 panel mounted navigation and global positioning system (GPS) units, or dual Garmin GTX-335R and/or GTX-345R Mode-S transponders and single or dual Garmin GTN 650/750/625/725 panel mounted navigation and GPS units. Snapshot dated June 30, 2026.

FAA-listed holder
Butler National Corporation
Aircraft configurations
21
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

The installation of dual Garmin GTX-33ES Mode-S transponders and single or dual Garmin GTN 650/750 panel mounted navigation and global positioning system (GPS) units, or dual Garmin GTX-335R and/or GTX-345R Mode-S transponders and single or dual Garmin GTN 650/750/625/725 panel mounted navigation and GPS units.

ST02230SE 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 24, Learjet 24A, and Learjet 24B-A, and 18 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet 24A10CELearjet 24AA10CELearjet 24B-AA10CELearjet 24BA10CELearjet 24CA10CELearjet 24DA10CELearjet 24EA10CELearjet 24F-AA10CELearjet 24FA10CELearjet 25A10CELearjet 25AA10CELearjet 25BA10CELearjet 25CA10CELearjet 25DA10CELearjet 25FA10CELearjet 31A10CELearjet 31AA10CELearjet 35A10CELearjet 35A (C-21A)A10CELearjet 36A10CELearjet 36AA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 24 and Learjet 24A, and 19 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?

Related avionics STCs

SA3038WE-DAvionics

Installation of dual Collins FD-109 Flight Director System in accordance with master list of drawings and related documents for United Air Lines Change Order Authorization No. 2-4950 dated April 27, 1977 or later FAA approved revision. Each system consists of one each of the following components. Roll computer P/N 522-4428-008, Pitch Computer P/N 522-4892-008, Instrument Amplifier P/N 522-3874-005, Control Panel P/N 522-4431-001, Horizon Flight Director Indicator P/N 522-4430-002, Course Deviation\nIndicator P/N 522-2782-004, Pitch Mode Annunciator P/N R2901-159 and Roll Mode Annunciator P/N R2901-160. The Boeing DC-8-61 FAA Approved Aircraft Flight Manual DAC-33161 has been reviewed and no revision is required as a result of this change.

FAA holder: United Airlines Inc

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