# STCs that may be installed: Gates Learjet 25D

A list on [Gates Learjet 25D](https://openairdocs.org/model/gates-learjet-25d.md).

In force first, then newest. The registry doesn’t record which STCs an aircraft has.

Page 1 of 2 · 100 STCs

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D.md): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. · Rockwell Collins Inc
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc.
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT.md): Installation of an Avionica, Inc. avCM Cellular Module · Aircraft Systems and Manufacturing Inc.
- [STC ST12087CH](https://openairdocs.org/stc/ST12087CH.md): Installation replacement Cabin/Cockpit Handheld Fire Extinguishers · Avcon Industries Inc.
- [STC ST02097SE](https://openairdocs.org/stc/ST02097SE.md): Installation of replacement circuit boards for the FC-110 autopilot · Symetric Industries, DBA Extant Aerospace
- [STC ST02416SE](https://openairdocs.org/stc/ST02416SE.md): Installation of the replacement rate gyro, Butler National Part Number 501-1169-01 MOD A or 501-1169-02 MOD A · Symetric Industries, DBA Extant Aerospace
- [STC ST02417SE](https://openairdocs.org/stc/ST02417SE.md): Installation of the replacement stall warning vertical accelerometer, Butler National Part Number 02904001-101 · Symetric Industries, DBA Extant Aerospace
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT.md): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII · Aircraft Systems and Manufacturing Inc.
- [STC ST00738WI](https://openairdocs.org/stc/ST00738WI.md): Increased service life. Data required. · Phoenix Air Group Inc.
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI.md): Installation of LED lights · AeroLED's Holdings LLC
- [STC ST01138DE](https://openairdocs.org/stc/ST01138DE.md): Installation of MidContinent MD23 standby altimeter and/or attitude indicators · Butler National Corporation
- [STC ST04728NY](https://openairdocs.org/stc/ST04728NY.md): Installation of LAI CoolView Cabin Window · Lee Aerospace Inc.
- [STC ST00814WI](https://openairdocs.org/stc/ST00814WI.md): Landing Gear Life Extension. · Phoenix Air Group Inc.
- [STC ST00999WI](https://openairdocs.org/stc/ST00999WI.md): Installation of Special Mission Power and Control Wiring, provisions for Carriage of Mission Stores with Hardpoints installed by STC SA1604SO or SA1670CE, and Takeoff weight increased to 16,300 lbs. · Phoenix Air Group Inc.
- [STC ST03424CH](https://openairdocs.org/stc/ST03424CH.md): Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders · CMD Flight Solutions LLC
- [STC ST04575AT](https://openairdocs.org/stc/ST04575AT.md): Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering · Chippewa Aerospace Inc.
- [STC ST01682WI](https://openairdocs.org/stc/ST01682WI.md): Installation of Heads Up Technologies (HUT) Cabin Entertainment System (CES) · Heads Up Technologies Inc.
- [STC ST00098IB](https://openairdocs.org/stc/ST00098IB.md): Introduction of ADS-B Out · STC Twenty One Limited
- [STC ST02004WI](https://openairdocs.org/stc/ST02004WI.md): Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI) · Peregrine
- [STC ST02230SE](https://openairdocs.org/stc/ST02230SE.md): 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 · Butler National Corporation
- [STC ST01930LA](https://openairdocs.org/stc/ST01930LA.md): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI) · Sandel Avionics LLC
- [STC ST04177AT](https://openairdocs.org/stc/ST04177AT.md): Installation of a Talon Aerospace LED Replacement General Purpose Lamps · Aaxico Technical Services Inc.
- [STC ST02635LA](https://openairdocs.org/stc/ST02635LA.md): Modification to replace the existing Mode S Transponder system with the ACSS NXT-600 Mode S Transponder with ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST02681AT-D](https://openairdocs.org/stc/ST02681AT-D.md): Installation of Cockpit / Cabin Blower Assy · Summit Aviation Inc
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH.md): Installation of an air ambulance conversion kit. · Med-Pac Inc.
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY.md): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0 · Scandinavian Avionics Design ApS
- [STC ST00835DE](https://openairdocs.org/stc/ST00835DE.md): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out and In functionality using the Garmin GTX 335R and GTX 345R Transponders plus qualified position sensor · Peregrine
- [STC SA1670SW](https://openairdocs.org/stc/SA1670SW.md): Installation of engine thrust reversers. · The NORDAM Group LLC
- [STC ST10472SC](https://openairdocs.org/stc/ST10472SC.md): Replacement Thrust Reverser Accumulator for the TR3000 Thrust Reverser System. · The NORDAM Group LLC
- [STC SA4999NM](https://openairdocs.org/stc/SA4999NM.md): Installation of lifeport patient loading and support system. · LifePort LLC
- [STC SA01213CH](https://openairdocs.org/stc/SA01213CH.md): Install air ambulance conversion in accordance with Spectrum Aeromed Inc. Drawings as listed on AML SA01213CH, or later FAA approved revision. · Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SA1639GL](https://openairdocs.org/stc/SA1639GL.md): Install air ambulance conversion. · Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC ST00790DE](https://openairdocs.org/stc/ST00790DE.md): Installation of BendixKing CAS 67B Traffic Alert and Collision Avoidance System (TCAS) II Version 7.1 · Peregrine
- [STC ST02636LA](https://openairdocs.org/stc/ST02636LA.md): Modification to upgrade the existing XS-950 Mode S Transponder system to add ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST00347BO](https://openairdocs.org/stc/ST00347BO.md): Modification to upgrade a BendixKing CAS 67A TCAS II system to CAS 67B TCAS II Change 7.1 · Pro Star Aviation, LLC
- [STC ST00373BO](https://openairdocs.org/stc/ST00373BO.md): Installation of Rockwell Collins TDR-94D Transponders with ADS-B Out · Pro Star Aviation, LLC
- [STC ST00226BO](https://openairdocs.org/stc/ST00226BO.md): Installation of Honeywell CAS-67A Airborne Collision Avoidance System (ACAS II) with dual MST-67A Mode S Transponders and copilot's Intercontinental Dynamics Corporation encoding altimeter with Static Defect Correction Module. · Pro Star Aviation, LLC
- [STC ST11071SC](https://openairdocs.org/stc/ST11071SC.md): Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs) · Liberty Partners Inc
- [STC ST02632LA](https://openairdocs.org/stc/ST02632LA.md): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out and optionally install ACSS NXG-900 GPS as a position source for ADS-B Out · Aviation Communications and Surveillance Systems
- [STC ST02609LA](https://openairdocs.org/stc/ST02609LA.md): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST03776NY](https://openairdocs.org/stc/ST03776NY.md): Modification to upgrade existing Rockwell Collins TCAS (Model: TTR-920, TTR-921, and TTR-4000) at VERSION 7.0 to Rockwell Collins TCAS (Model: TTR-921, TTR-4000, and TTR-4100) at VERSION 7.1 (ACAS II) · Scandinavian Avionics Design ApS
- [STC ST02500SE](https://openairdocs.org/stc/ST02500SE.md): The installation of the Garmin GDL-88 with the Flight Stream 210 to allow ADS-B(In) Flight Information Service Broadcast (FIS-B), independent of the ADS-B(Out) solution compliance. · Butler National Corporation
- [STC SA1170GL](https://openairdocs.org/stc/SA1170GL.md): Except Model 55: Install Egan Aviation air ambulance stretcher P/N 125 using installation kit P/N 803, inverter/pump kit No. 808, 809, or 810. For Model 55, install air ambulance stretcher P/N 125 using installation kit P/N 804, medical oxygen system kit P/N 807, inverter/pump kit No. 808, 809, or810. · Paul/ Lanna Egan LLC
- [STC ST02583LA](https://openairdocs.org/stc/ST02583LA.md): Modification of the Engine Exhaust system that installs the Alloy Aerospace, Inc. hush kit on Learjet 20 series aircraft · Alloy Aerospace Inc
- [STC ST02121CH](https://openairdocs.org/stc/ST02121CH.md): Certification for Reduced Vertical Separation Minimum (RVSM) operational capability and installation of dual Honeywell AM-250 Altimeters and Rosemount model 0856NA Pitot-Static Probes · Flight Test Aerospace, Inc
- [STC ST01733WI](https://openairdocs.org/stc/ST01733WI.md): Installation of the Quiet Lear Hushkit or Avcon Noise Suppressor · Butler National Corporation
- [STC ST04238AT](https://openairdocs.org/stc/ST04238AT.md): Upgrade of Honeywell Traffic Collision Avoidance Systems II (TCAS II) Processor Software from TCAS II Version 7.0 to TCAS II Version 7.1 · Aviation Partners Group Inc
- [STC ST01783WI](https://openairdocs.org/stc/ST01783WI.md): Installation of Internal Wing Hardpoints · Avcon Industries Inc
- [STC ST02316LA](https://openairdocs.org/stc/ST02316LA.md): Installation of a Crane Aerospace & Electronics Tire Sensor Assembly · ELDEC Corporation
- [STC ST01734WI](https://openairdocs.org/stc/ST01734WI.md): Installation of an Emergency Pneumatic Reservoir Assembly, EAS P/N 1260001-02 · EAS Corporation

Next page: https://openairdocs.org/model/gates-learjet-25d/stcs.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
  SELECT stc_number, min(matched_model) AS matched_model
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('5170514')
  GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number
```

This list as a web page: https://openairdocs.org/model/gates-learjet-25d/stcs

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