# N50FN: 1976 Gates Learjet 35A

- Status: Valid registration
- Airframe: [Gates Learjet 35A](https://openairdocs.org/model/gates-learjet-35a) (registry code 5170602, 10 seats)
- Engine: [Garrett TFE731 series](https://openairdocs.org/engine/garrett-tfe731-series) (registry code 29001)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (Learjet Inc.), [TCDS E6WE](https://openairdocs.org/tcds/E6WE) (Honeywell Aerospace US LLC) (OpenAirDocs)
- Serial number: 070
- Year built: 1976
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Multiple
- Airworthiness date: December 18, 2019
- Certificate issued: August 25, 2021
- Expires: August 31, 2028
- Mode S code: A63821
- Registered owner: [Gh Equipment LLC](https://openairdocs.org/faa-owner/GH%20EQUIPMENT%20LLC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: LLC
- Owner's area on the map: 39.7236° N, 75.5412° W: Placed by OpenAirDocs at the center of ZIP code 19801, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=50FN
- Page: https://openairdocs.org/aircraft/N50FN

From the FAA registry file of October 22, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Garrett TFE731 model are included.

## ADs that may apply (OpenAirDocs): 67 in force

### Matched by airframe (Gates Learjet 35A)

- [AD 2022-05-01](https://openairdocs.org/ad/2022-05-01): Spoilers · Learjet 35, 35A (C-21A), 36 and 5 more. Effective Mar 9, 2022
- [AD 2018-19-04](https://openairdocs.org/ad/2018-19-04): TE Flap Control System · Learjet 28, 29, 31 and 9 more. Effective Oct 23, 2018
- [AD 2007-17-17](https://openairdocs.org/ad/2007-17-17): Unsealed gaps on the pylon side of the engine firewall · Learjet 31, 31A, 35 and 7 more. Effective Oct 2, 2007
- [AD 2007-04-18](https://openairdocs.org/ad/2007-04-18): Left- and right-hand standby fuel pump switches · Learjet 23, 24, 24A and 25 more. Effective Mar 23, 2007
- [AD 2005-13-36](https://openairdocs.org/ad/2005-13-36): Center ball of the aileron control cable · Learjet 23, 24, 24A and 21 more. Effective Aug 9, 2005
- [AD 2004-03-08](https://openairdocs.org/ad/2004-03-08): Drag Angles of Fuselage and Engine Pylons · Learjet 31, 31A, 35 and 3 more. Effective Mar 15, 2004
- [AD 2001-07-11](https://openairdocs.org/ad/2001-07-11): Main Landing Gear Tires · Learjet 23, 24, 24A and 25 more. Effective May 1, 2001
- [AD 2000-24-19](https://openairdocs.org/ad/2000-24-19): Flightcrew Oxygen Masks · Learjet 35, 35A (C-21A), 36 and 1 more. Effective Jan 4, 2001
- [AD 95-19-04 R1 RES](https://openairdocs.org/ad/95-19-04-R1-RES): Omega Navigation System · Learjet 35, 35A (C-21A), 36 and 4 more. Effective Mar 27, 2000
- [AD 99-23-19](https://openairdocs.org/ad/99-23-19): Spoiler Actuator · Learjet 31, 31A, 35 and 2 more. Effective Dec 21, 1999
- [AD 97-05-03 R1](https://openairdocs.org/ad/97-05-03-R1): Global Positioning Systems · BAE Systems Avro 146-RJ100A, BAe 146-200A, Jetstream Model 4101 and 27 more. Effective Apr 20, 1999
- [AD 98-06-28](https://openairdocs.org/ad/98-06-28): Auxiliary Cabin Heater Relay Box AWG Wire · Learjet 31 and 35A (C-21A). Effective Apr 24, 1998
- [AD 96-19-13](https://openairdocs.org/ad/96-19-13): Operating Mach Limit · Learjet 35, 35A (C-21A), 36 and 1 more. Effective Oct 22, 1996
- [AD 95-22-01](https://openairdocs.org/ad/95-22-01): Fluorescent Lighting System · Aerospace Lighting Fluorescent lighting systems, A310-203, A310-204 and 74 more. Effective Dec 4, 1995
- [AD 95-20-03](https://openairdocs.org/ad/95-20-03): Airplane Flight Manual (AFM) - Altitude Limitations · Learjet 24, 24A, 24B and 24 more. Effective Nov 2, 1995
- [AD 92-19-12](https://openairdocs.org/ad/92-19-12): Oxygen Plumbing & Map Light Wires · Learjet 23, 24, 24A and 22 more. Effective Nov 17, 1992
- [AD 91-03-08](https://openairdocs.org/ad/91-03-08): Fluorescent Lighting Systems · Learjet 31, 35, 35A (C-21A) and 5 more. Effective Feb 12, 1991
- [AD 89-12-01](https://openairdocs.org/ad/89-12-01): Drag Chute Riser · Learjet 24, 24A, 24B and 22 more. Effective Jul 3, 1989
- [AD 86-05-05 R1](https://openairdocs.org/ad/86-05-05-R1): Battery Vent System · Learjet 23, 24, 24A and 20 more. Effective Jan 19, 1988
- [AD 87-04-06](https://openairdocs.org/ad/87-04-06): Autopilot/Flight Director · Learjet 35, 35A (C-21A), 36 and 4 more. Effective Mar 9, 1987
- [AD 87-02-06](https://openairdocs.org/ad/87-02-06): Engine Mounts · Learjet 35, 35A (C-21A), 36 and 4 more. Effective Feb 6, 1987
- [AD 86-22-05](https://openairdocs.org/ad/86-22-05): Flap Sector Mounting Brackets Inspection · Learjet 23, 24, 24A and 23 more. Effective Nov 10, 1986
- [AD 82-01-05 R2](https://openairdocs.org/ad/82-01-05-R2): Stall Warning Accelerometer Unit · Learjet 23, 24, 24A and 16 more. Effective Apr 10, 1986
- [AD 85-16-04](https://openairdocs.org/ad/85-16-04): Aileron · Raisbeck Mark IV performance system (STC SA766NW). Effective Sep 6, 1985
- [AD 80-19-11 R1](https://openairdocs.org/ad/80-19-11-R1): Automatic Flight Control and Stall Warning Systems · Learjet 23, 24, 24A and 20 more. Effective May 20, 1985
- [AD 84-19-06](https://openairdocs.org/ad/84-19-06): Tab Control System · Learjet 24, 24A, 24B and 22 more. Effective Oct 22, 1984
- [AD 79-08-01 R1](https://openairdocs.org/ad/79-08-01-R1): Thrust Reversers · Learjet 35, 35A (C-21A), 36 and 1 more. Effective Apr 19, 1982
- [AD 81-13-07](https://openairdocs.org/ad/81-13-07): Change to AFM Fuel Starvation · Learjet 23, 24, 24A and 20 more. Effective Jun 25, 1981
- [AD 80-19-09 R1](https://openairdocs.org/ad/80-19-09-R1): Jet Pumps · Learjet 23, 24, 24A and 20 more. Effective Dec 11, 1980
- [AD 80-17-11](https://openairdocs.org/ad/80-17-11): Airspeed Warning Placard · Learjet 35, 35A (C-21A), 36 and 1 more. Effective Aug 28, 1980
- [AD 80-07-09](https://openairdocs.org/ad/80-07-09): Cabin Main Entrance Upper Door · Learjet 23, 24, 24A and 20 more. Effective May 1, 1980
- [AD 80-06-02](https://openairdocs.org/ad/80-06-02): Electrical System · Learjet 35, 35A (C-21A), 36 and 1 more. Effective Mar 24, 1980
- [AD 78-16-03](https://openairdocs.org/ad/78-16-03): Refrigeration Condenser Fan · Learjet 23, 24, 24A and 18 more. Effective Aug 17, 1978

### Matched by engine (Garrett TFE731 series)

- [AD 2016-07-02](https://openairdocs.org/ad/2016-07-02): Failure of the interstage turbine transition duct · Honeywell International TFE731-4, TFE731-4R, TFE731-5AR and 2 more. Effective May 5, 2016
- [AD 2014-12-52](https://openairdocs.org/ad/2014-12-52): Engines · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 11 more. Effective Jul 28, 2014
- [AD 2012-17-05](https://openairdocs.org/ad/2012-17-05): First stage low-pressure turbine (LPT1) rotor assembly · Honeywell International TFE731-4, TFE731-4R, TFE731-5 and 3 more. Effective Oct 2, 2012
- [AD 2010-06-11](https://openairdocs.org/ad/2010-06-11): Second stage low-pressure compressor rotor (LPCR) discs · Honeywell International TFE731-2, TFE731-2A, TFE731-2C and 16 more. Effective Apr 21, 2010
- [AD 2008-19-12](https://openairdocs.org/ad/2008-19-12): ITT duct · Honeywell International TFE731-4, TFE731-4R, TFE731-5 and 3 more. Effective Oct 27, 2008
- [AD 2008-02-19](https://openairdocs.org/ad/2008-02-19): High pressure (HP) turbine rotor assemblies · Honeywell International TFE731-20AR, TFE731-20BR, TFE731-20R and 15 more. Effective Mar 6, 2008
- [AD 2005-13-07](https://openairdocs.org/ad/2005-13-07): Turbine rotor discs. · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Jul 27, 2005
- [AD 2005-05-15](https://openairdocs.org/ad/2005-05-15): (LPT) stage 1 disks · Honeywell International TFE731-2, TFE731-2C, TFE731-3 and 5 more. Effective Apr 18, 2005
- [AD 2001-23-09](https://openairdocs.org/ad/2001-23-09): Fan Rotor Discs · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Dec 21, 2001
- [AD 2000-15-09](https://openairdocs.org/ad/2000-15-09): HPC Impeller · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 20 more. Effective Oct 10, 2000
- [AD 98-17-01 R1](https://openairdocs.org/ad/98-17-01-R1): Flex Fuel Tube · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Nov 29, 1999
- [AD 97-04-03](https://openairdocs.org/ad/97-04-03): First stage low pressure turbine (LPT) seal plates · Honeywell International TFE731-2A, TFE731-3C and TFE731-3CR. Effective May 5, 1997
- [AD 96-05-03](https://openairdocs.org/ad/96-05-03): Fan rotor disks · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 13 more. Effective Apr 2, 1996
- [AD 96-04-01](https://openairdocs.org/ad/96-04-01): Fan Rotor Assembly · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Mar 15, 1996
- [AD 95-07-02](https://openairdocs.org/ad/95-07-02): Low Pressure Turbine Disks · Honeywell International TFE731-3, TFE731-3A, TFE731-3AR and 3 more. Effective Jun 19, 1995
- [AD 94-23-05](https://openairdocs.org/ad/94-23-05): Honeywell International TFE731-3A and TFE731-3AR. Effective Dec 1, 1994
- [AD 94-07-03](https://openairdocs.org/ad/94-07-03): Turbine Nozzles · Honeywell International TFE731-2A, TFE731-3, TFE731-3A and 4 more. Effective Jun 6, 1994
- [AD 92-02-18](https://openairdocs.org/ad/92-02-18): Inflight Operation · Honeywell International TFE731-5BR. Effective Feb 10, 1993
- [AD 92-21-06](https://openairdocs.org/ad/92-21-06): Low Pressure Turbine (LPT) Rotor Disks · Honeywell International TFE731-2, TFE731-3, TFE731-3A and 2 more. Effective Nov 27, 1992
- [AD 90-24-06](https://openairdocs.org/ad/90-24-06): Thermocouple Lead Assemblies · Honeywell International TFE731-2, TFE731-2A, TFE731-3 and 8 more. Effective Nov 13, 1990
- [AD 90-03-04](https://openairdocs.org/ad/90-03-04): High Pressure Turbine Rotor Discs · Honeywell International TFE731-3, TFE731-3A, TFE731-3AR and 1 more. Effective Feb 22, 1990
- [AD 88-18-03](https://openairdocs.org/ad/88-18-03): High Pressure Turbine Rotor Disc · Honeywell International TFE731-3, TFE731-3A, TFE731-3AR and 1 more. Effective Jul 21, 1989
- [AD 86-03-01](https://openairdocs.org/ad/86-03-01): Turbine Interstage Transition Ducts · Honeywell International TFE731-2, TFE731-3, TFE731-3A and 4 more. Effective Feb 24, 1986
- [AD 82-23-03 R1](https://openairdocs.org/ad/82-23-03-R1): High Pressure Compressor Impellers · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective Dec 9, 1983
- [AD 81-24-08](https://openairdocs.org/ad/81-24-08): Turbine Interstage Transition Ducts · Honeywell International TFE731-2, TFE731-3, TFE731-3A and 2 more. Effective Jan 6, 1982
- [AD 80-16-04](https://openairdocs.org/ad/80-16-04): Tie Rod · Honeywell International TFE731-2, TFE731-3 and TFE731-3R. Effective Aug 7, 1980
- [AD 78-22-10](https://openairdocs.org/ad/78-22-10): Low Pressure Rotor Thrust Ball Bearings · Honeywell International TFE731-2, TFE731-3 and TFE731-3R. Effective Nov 13, 1978
- [AD 75-07-10](https://openairdocs.org/ad/75-07-10): Transfer Gearbox Vertical Bevel Gear Bearing · Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 12 more. Effective May 1, 1975
- [AD 74-23-05](https://openairdocs.org/ad/74-23-05): Fuel Pumps · Honeywell International TFE731-2. Effective Nov 14, 1974
- [AD 74-11-06](https://openairdocs.org/ad/74-11-06): Fuel Control Computer · Honeywell International TFE731-2. Effective Sep 23, 1974
- [AD 74-18-16](https://openairdocs.org/ad/74-18-16): Fuel Control Computer · Honeywell International TFE731-2. Effective Sep 6, 1974
- [AD 74-18-12](https://openairdocs.org/ad/74-18-12): Fuel Control Orifice Assembly · Honeywell International TFE731-2. Effective Sep 3, 1974
- [AD 74-13-09](https://openairdocs.org/ad/74-13-09): Fuel Pump Assemblies · Honeywell International TFE731-2. Effective Jul 31, 1974
- [AD 89-22-16](https://openairdocs.org/ad/89-22-16): Engine Acceleration or Deceleration · Honeywell International TFE731-2, TFE731-5, TFE731-5AR and 1 more

### Historical (superseded or no longer in force)

- [AD 96-11-07](https://openairdocs.org/ad/96-11-07) (historical): Auxiliary Cabin Heater Relay Box AWG Wire · Learjet 31 and 35A (C-21A). Effective Jun 28, 1996
- [AD 95-19-04](https://openairdocs.org/ad/95-19-04) (historical): Omega Navigation System · Learjet 35, 35A (C-21A), 36 and 4 more. Effective Oct 12, 1995
- [AD 98-17-01](https://openairdocs.org/ad/98-17-01) (historical): Honeywell International TFE731-2, TFE731-2A, TFE731-2B and 14 more. Effective Oct 13, 1998
- [AD 96-18-13](https://openairdocs.org/ad/96-18-13) (historical): Fan rotor disk · Honeywell International TFE731-2, TFE731-2A, TFE731-3 and 10 more. Effective Nov 12, 1996
- [AD 86-11-05](https://openairdocs.org/ad/86-11-05) (historical): Fan Rotor Discs · Honeywell International TFE731-2, TFE731-3 and TFE731-3R

## Information bulletins (advisory) (5 in force)

- [SAIB 2026-07](https://openairdocs.org/saib/2026-07): MAIN LANDING GEAR ATTACH SECTION, Trunnion Pins. Issued Mar 19, 2026
- [SAIB NM-16-24](https://openairdocs.org/saib/NM-16-24): Fuselage: Main Plate/Skin. Issued Sep 15, 2016
- [SAIB NM-13-38](https://openairdocs.org/saib/NM-13-38): Flight Controls  Control Column Section. Issued Jun 24, 2013
- [SAIB NM-11-48](https://openairdocs.org/saib/NM-11-48): Ice and Rain Protection: Wing Transverse Duct Assembly. Issued Aug 22, 2011
- [SAIB NE-06-70](https://openairdocs.org/saib/NE-06-70): . Issued Sep 25, 2006

## NTSB investigations

None matched to N50FN.

## FAA accident and incident reports

None matched to N50FN.

## Service difficulty reports (2)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR BHKRSDR0110](https://openairdocs.org/sdr/BHKRSDR0110), Mar 26, 2010: FIRE DETECTOR. FALSE ACTIVATION. AFTER SIMULATED EMERGENCY DECENT TO 19K, LT FIRE WARNING LIGHT ILLUMINATED. EMERGENCY CHECKLIST MEMORY ITEMS COMPLETED (ENGINE FIRE-SHUTDOWN). LT FIRE WARNING L
- [SDR 2009F00078](https://openairdocs.org/sdr/2009F00078), Aug 25, 2009: BLOWER MOTOR. BURNED OUT. WHEN ARRIVING AT 27000 FT, NOTICED A SLIGHT ODOR COMING FROM THE CABIN. TURNED OFF THE CABIN BLOWER AND COCKPIT BLOWER TO TRY AND ISOLATE FROM WHERE THE SMELL W

## STCs that may be installed (OpenAirDocs) (230, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Gates Learjet 35A)

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D): 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 ST12461IB](https://openairdocs.org/stc/ST12461IB): Installation of Cockpit Voice Recorder with optional RIPS Upgrade. Mid- Canada Mod Center
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): 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): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC ST12087CH](https://openairdocs.org/stc/ST12087CH): Installation replacement Cabin/Cockpit Handheld Fire Extinguishers. Avcon Industries Inc
- [STC ST02416SE](https://openairdocs.org/stc/ST02416SE): 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): Installation of the replacement stall warning vertical accelerometer, Butler National Part Number 02904001-101. Symetric Industries, DBA Extant Aerospace
- [STC ST02515SE](https://openairdocs.org/stc/ST02515SE): Installation of the replacement vertical accelerometer, Butler National Part Number 501-1287-02 MOD A. Symetric Industries, DBA Extant Aerospace
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): 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): Increased service life. Data required. Phoenix Air Group Inc
- [STC ST02036WI](https://openairdocs.org/stc/ST02036WI): Installation of an additional Garmin G700 TXi Primary Flight Display or Multifunction Display. Butler National Corporation
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC
- [STC ST01138DE](https://openairdocs.org/stc/ST01138DE): Installation of MidContinent MD23 standby altimeter and/or attitude indicators. Butler National Corporation
- [STC ST01083DE](https://openairdocs.org/stc/ST01083DE): Installation of the Aviation Clean Air Airborne Air & Surface Purification System. Lee Aerospace, Inc
- [STC ST04728NY](https://openairdocs.org/stc/ST04728NY): Installation of LAI CoolView Cabin Window. Lee Aerospace Inc
- [STC SA709NE](https://openairdocs.org/stc/SA709NE): Installation of Marquardt MTR-101 Tow Reel System. Phoenix Air Group Inc
- [STC ST00814WI](https://openairdocs.org/stc/ST00814WI): Landing Gear Life Extension. Phoenix Air Group Inc
- [STC ST00999WI](https://openairdocs.org/stc/ST00999WI): 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 ST10217SC](https://openairdocs.org/stc/ST10217SC): Approval of underwing stores including carriage of the MTR101 Tow Reel System (and targets) on the Strongback-Lear (Sentel) hardpoint. Phoenix Air Group Inc
- [STC ST03424CH](https://openairdocs.org/stc/ST03424CH): Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders. CMD Flight Solutions LLC
- [STC ST01517WI](https://openairdocs.org/stc/ST01517WI): Installation of the Glareshield LED Lighting System. Global Aviation Tech LLC
- [STC ST01602WI](https://openairdocs.org/stc/ST01602WI): Installation of Luminescent Overlay panels upgrade. Global Aviation Tech LLC
- [STC ST04393CH](https://openairdocs.org/stc/ST04393CH): Avionics upgrade installation of a Garmin GTN (TM) 750 Touchscreen Navigator interfaced to existing pilot side instruments and existing FC-200 or FC-530/-550 Autopilot and added GWX (TM) 70 Weather Radar. The Garmin GTN (TM) 750 GPS is paired with the added GTX (TM) 345R (or GTX 33/33D) Transponders for Automatic Broadcast Surveillance (ADS-B) OUT and ADS-B IN (GDL-88) capability with wireless download connectivity utilizing Garmin Connext®. Optional second Garmin GTN (TM) 650/750 interfaced to existing copilot side instruments only. Royal Air Inc
- [STC ST04575AT](https://openairdocs.org/stc/ST04575AT): Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering. Chippewa Aerospace Inc
- [STC ST00223MC](https://openairdocs.org/stc/ST00223MC): Cockpit Cooling System Modification. Duncan Aviation Inc
- [STC ST01070DE](https://openairdocs.org/stc/ST01070DE): Installation of the Curtiss-Wright Fortress Flight Data Recorder (with Cockpit Voice Recorder). Peregrine
- [STC ST01682WI](https://openairdocs.org/stc/ST01682WI): Installation of Heads Up Technologies (HUT) Cabin Entertainment System (CES). Heads Up Technologies Inc
- [STC ST00098IB](https://openairdocs.org/stc/ST00098IB): Introduction of ADS-B Out. STC Twenty One Limited
- [STC ST04221NY](https://openairdocs.org/stc/ST04221NY): Installation of LAI Heated Windshields. Lee Aerospace Inc
- [STC ST02004WI](https://openairdocs.org/stc/ST02004WI): Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI). Peregrine
- [STC ST02635AT](https://openairdocs.org/stc/ST02635AT): Deactivation of Aeronca (Learjet) Thrust Reversers. Summit Aviation Inc
- [STC ST01881WI](https://openairdocs.org/stc/ST01881WI): Installation of the Garmin GTS 8000 TCAS II System and Dual GTX 3000 Transponders for ADS-B Out Compliance and Interface of factory installed FC-530 Autopilot System to Single/Dual GTN 7XX/6XX Navigators. Avcon Industries Inc
- [STC ST02230SE](https://openairdocs.org/stc/ST02230SE): 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): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI). Sandel Avionics LLC
- [STC ST01102WI](https://openairdocs.org/stc/ST01102WI): Installation of a Universal Avionics MFD-640 Multi-Function Display. Blackhawk Aerospace Technologies Inc
- [STC ST01103WI](https://openairdocs.org/stc/ST01103WI): Installation of a Universal Avionics (TAWS) Terrain Awareness and Avoidance System. Blackhawk Aerospace Technologies Inc
- [STC ST04481CH](https://openairdocs.org/stc/ST04481CH): Replacement of similar functioning circuit and switch for obsolete steering interface unit (SIU) in accordance with Butler National Master Data List 0200 I 020 Revisio n (A) , dat ed 14 MAY 2021, or later FAA Approved Revision. Butler National Corporation
- [STC ST04177AT](https://openairdocs.org/stc/ST04177AT): Installation of a Talon Aerospace LED Replacement General Purpose Lamps. Aaxico Technical Services Inc
- [STC ST00155MC](https://openairdocs.org/stc/ST00155MC): Installation of the Items. Global Aviation Technologies
- [STC ST01926WI](https://openairdocs.org/stc/ST01926WI): Interface of factory installed FC-530/FC-535 Autopilot System to Single/Dual GTN 750/650 Navigators. Avcon Industries Inc
- [STC ST04447CH](https://openairdocs.org/stc/ST04447CH): Installation of Garmin GTS (TM) 8000 TCAS/ACAS II Traffic Surveillance system, dual GTX (TM) 3000 Mode-S Extended Squitter Transponders and GDL® 88 receiver for a complete ADS-B In/Out capability and a Flight Stream 210 for wireless download connectivity using Garmin Connext®. Installation in accordance with Royal Air Master Document List No. RACB-MDL-3000, Revision A, dated January 06, 2020, or later FAA approved revision. Royal Air Inc
- [STC ST02635LA](https://openairdocs.org/stc/ST02635LA): 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): Installation of Cockpit / Cabin Blower Assy. Summit Aviation Inc
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH): Installation of an air ambulance conversion kit. Med-Pac Inc
- [STC ST01178WI](https://openairdocs.org/stc/ST01178WI): Installation of PWI Electrode Inverter, Glareshield Lighting System. PWI Inc
- [STC ST00882DE](https://openairdocs.org/stc/ST00882DE): Installation of Becker Avionics BXT6553 transponder. Peregrine
- [STC ST02455SE](https://openairdocs.org/stc/ST02455SE): Installation of Dual GTX-3000 Transponders, GDL-88 Automatic Dependent Surveillance-Broadcast (ADS-B) (In) with Wide Area Augmentation System (WAAS) Global Positioning System (GPS) sensor and Flight Stream 210 Bluetooth Connectivity installed for ADS-B (Out) compliance. Butler National Corporation
- [STC ST09366SC](https://openairdocs.org/stc/ST09366SC): Installation of an Electric-Driven Vapor Cycle air conditioning system. Air Comm Corporation
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY): 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): 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

All 230: https://openairdocs.org/aircraft/N50FN/stcs.md

## Related

- Other Gates Learjet 35A aircraft: https://openairdocs.org/model/gates-learjet-35a/aircraft.md
- The Garrett TFE731 series engine: https://openairdocs.org/engine/garrett-tfe731-series.md

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