# N73CE: 1965 Learjet 23 - Status: Valid registration - Airframe: [Learjet 23](https://openairdocs.org/model/learjet-23) (registry code 5170102, 8 seats) - Engine: [GE CJ-610-4](https://openairdocs.org/engine/ge-cj-610-4) (registry code 30034) - Data sheets: [TCDS A5CE](https://openairdocs.org/tcds/A5CE) (Learjet Inc.), [TCDS 1E16](https://openairdocs.org/tcds/1E16) (General Electric Company) (OpenAirDocs) - Serial number: 23068 - Year built: 1965 - Type: Fixed wing multi engine - Engine type: Turbo-jet - Airworthiness: Standard, normal - Airworthiness date: January 3, 2001 - Certificate issued: September 12, 2007 - Expires: April 30, 2028 - Mode S code: A9C8E9 - Registered owner: [Yanks Air Museum](https://openairdocs.org/faa-owner/YANKS%20AIR%20MUSEUM) - Location: [Baldwin Park, CA](https://openairdocs.org/faa-place/CA/Baldwin%20Park) - Owner type: Corporation - Owner's area on the map: 34.0974° N, 117.9683° W: Placed by OpenAirDocs at the center of ZIP code 91706, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=73CE - Page: https://openairdocs.org/aircraft/N73CE 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. ## ADs that may apply (OpenAirDocs): 34 in force ### Matched by airframe (Learjet 23) - [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 2005-23-06](https://openairdocs.org/ad/2005-23-06): Thrust reverser hydraulic system · Engine thrust reversers (NORDAM Group STC SA1669SW or 2 others). Effective Dec 19, 2005 - [AD 2005-23-03](https://openairdocs.org/ad/2005-23-03): Spherical accumulator for the main hydraulic system · Learjet 23, 24, 24A and 14 more. Effective Dec 19, 2005 - [AD 2005-16-09](https://openairdocs.org/ad/2005-16-09): Flappers. · Learjet 23, 24, 25 and 2 more. Effective Sep 13, 2005 - [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 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005 - [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 99-16-03](https://openairdocs.org/ad/99-16-03): Horizontal Stabilizer Anti-Ice System · Learjet 23, 24, 24A and 22 more. Effective Sep 7, 1999 - [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 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 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 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 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 80-26-02](https://openairdocs.org/ad/80-26-02): AFCS/AFC-SS Pitch Function · Learjet 23, 24, 24A and 16 more. Effective Jan 15, 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 80-07-09](https://openairdocs.org/ad/80-07-09): Cabin Main Entrance Upper Door · Learjet 23, 24, 24A and 20 more. Effective May 1, 1980 - [AD 78-20-12](https://openairdocs.org/ad/78-20-12): Aircraft Tires · Cessna 336, 337, T337B and 15 more. Effective Oct 5, 1978 - [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 - [AD 77-19-02](https://openairdocs.org/ad/77-19-02): Cabin Door Locking Mechanism · Learjet 23, 24, 24A and 14 more. Effective Jul 20, 1978 - [AD 75-15-06](https://openairdocs.org/ad/75-15-06): Landing Gear Struts · Learjet 23, 24, 24A and 14 more. Effective Jul 25, 1975 - [AD 74-23-01](https://openairdocs.org/ad/74-23-01): External Power Receptacle · Learjet 23 and 24. Effective Nov 5, 1974 - [AD 72-05-01](https://openairdocs.org/ad/72-05-01): Flap Actuator Rod End · Learjet 23. Effective Feb 29, 1972 - [AD 71-16-04](https://openairdocs.org/ad/71-16-04): Battery Change or Modification of Comb · Learjet 23, 24 and 25. Effective Aug 3, 1971 - [AD 69-15-06](https://openairdocs.org/ad/69-15-06): Engine Throttle Cable · Learjet 23, 24 and 25. Effective Aug 15, 1969 - [AD 66-14-02](https://openairdocs.org/ad/66-14-02): Windshield Deicing Systems · Learjet 23 and 24. Effective Jun 1, 1966 - [AD 66-13-04](https://openairdocs.org/ad/66-13-04): Pressure Control Static Air System · Learjet 23 and 24. Effective May 17, 1966 - [AD 65-26-03](https://openairdocs.org/ad/65-26-03): Baggage Compartment · Learjet 23 - [AD 65-26-02](https://openairdocs.org/ad/65-26-02): Control Column Covers · Learjet 23 ### Matched by engine (GE CJ-610-4) - [AD 2010-09-08](https://openairdocs.org/ad/2010-09-08): AFT Technologies combustion liners · General Electric CF700-2C, CF700-2D, CF700-2D-2 and 7 more. Effective May 28, 2010 - [AD 2001-10-12](https://openairdocs.org/ad/2001-10-12): Unapproved Parts · General Electric CF700-2C, CF700-2D, CF700-2D-2 and 7 more. Effective Jun 7, 2001 - [AD 98-23-06](https://openairdocs.org/ad/98-23-06): Combustion Liner Assemblies · General Electric CF700-2C, CF700-2D, CF700-2D-2 and 7 more. Effective Nov 20, 1998 - [AD 97-25-08](https://openairdocs.org/ad/97-25-08): General Electric CF700-2C, CF700-2D, CF700-2D-2 and 7 more. Effective Jan 2, 1998 - [AD 73-23-05](https://openairdocs.org/ad/73-23-05): First Stage Turbine Discs · General Electric CF700-2C, CJ610-1, CJ610-4 and 2 more ### Historical (superseded or no longer in force) - [AD 95-25-03](https://openairdocs.org/ad/95-25-03) (historical): Deterioration of Flapper Valves of Tip Tank · Learjet 23, 24, 25 and 2 more. Effective Dec 27, 1995 ## Information bulletins (advisory) (3 in force) - [SAIB 2026-07](https://openairdocs.org/saib/2026-07): MAIN LANDING GEAR ATTACH SECTION, Trunnion Pins. Issued Mar 19, 2026 - [SAIB NM-13-38](https://openairdocs.org/saib/NM-13-38): Flight Controls Control Column Section. Issued Jun 24, 2013 - [SAIB NE-08-49R1](https://openairdocs.org/saib/NE-08-49R1): Turbine Engine Combustion Section. Issued Sep 17, 2008 - [SAIB NE-08-49](https://openairdocs.org/saib/NE-08-49) (historical): Turbine Engine Combustion Section. Issued Sep 9, 2008 ## NTSB investigations None matched to N73CE. ## FAA accident and incident reports None matched to N73CE. ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (54, 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 (Learjet 23) - [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 SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc - [STC SA09856AC](https://openairdocs.org/stc/SA09856AC): Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments. Honeywell International Inc (Bendix King) - [STC ST01930LA](https://openairdocs.org/stc/ST01930LA): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI). Sandel Avionics LLC - [STC SA02075SE](https://openairdocs.org/stc/SA02075SE): Installation of a Mid-Continent MD835( ) Lithium Ion Battery. Mid-Continent Instrument Co. Inc - [STC SA04514NY](https://openairdocs.org/stc/SA04514NY): Single/Dual Transponder System ADS-B Upgrade. Scandinavian Avionics Design ApS - [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc - [STC SA1731SW](https://openairdocs.org/stc/SA1731SW): Installation of engine thrust reversers. The NORDAM Group LLC - [STC ST10472SC](https://openairdocs.org/stc/ST10472SC): Replacement Thrust Reverser Accumulator for the TR3000 Thrust Reverser System. The NORDAM Group LLC - [STC SA04165NY](https://openairdocs.org/stc/SA04165NY): Installation of Latitude Technologies Skynode S200 Satcom system must be performed. Latitude Technologies Corporation - [STC SA01933LA-D](https://openairdocs.org/stc/SA01933LA-D): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation - [STC SA00352BO PAGE 1](https://openairdocs.org/stc/SA00352BO%20PAGE%201): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation - [STC SA01229SE PAGE 1](https://openairdocs.org/stc/SA01229SE%20PAGE%201): Installation of GNS 480 (CNX80) GPS WAAS Navigator with integrated VHF Navigation and Communication radios. Garmin International Inc - [STC SA01933LA-D PAGE 1](https://openairdocs.org/stc/SA01933LA-D%20PAGE%201): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc - [STC SA00269BO](https://openairdocs.org/stc/SA00269BO): Installation of Avidyne Corporation TWX 670 Tactical Weather Detection System P/N 850-00026-000-( ) consisting of Avidyne Processor P/N 700-00033-000-( ), Sensor Systems Inc. Antenna P/N S72-1715-1 with doubler plate P/N S72-171530-1, and Avidyne Mounting Tray P/N 700-00034-000. Avidyne Corporation - [STC SA01692SE](https://openairdocs.org/stc/SA01692SE): Installation of a Garmin GMX 200 Multi-Function Display. Garmin International Inc - [STC SA03148NY](https://openairdocs.org/stc/SA03148NY): The installation of the Latitude Technologies Corporation S100 Tracking System. Latitude Technologies Corporation - [STC SA01487SE-D](https://openairdocs.org/stc/SA01487SE-D): Installation of a GDL 69 or GDL 69A XM Satellite Receiver. Garmin International Inc - [STC SA00281BO](https://openairdocs.org/stc/SA00281BO): Installation of Avidyne Corporation MLX770 MultiLink Broadcast Transceiver P/N 700-00163-( ), Sensor Systems Inc. Antenna P/N S67-1575-109, or equivalent, and optional Avidyne Mounting Tray P/N 700-00165-000. Avidyne Corporation - [STC ST00462LA](https://openairdocs.org/stc/ST00462LA): Modification of the engine exhaust system. Rooke Corporation dba Aviation Equipment - [STC SA00243BO](https://openairdocs.org/stc/SA00243BO): Installation of Centurion Consulting, Inc. GPS Steering Assist Module (SAM) with roll steering (p/n 0025-5100), or without roll steering (p/n 0025-5200). Icarus Avionics, LLC - [STC SA996EA](https://openairdocs.org/stc/SA996EA): Installation of Shaw Aero fuel filler cap P/Ns 457-2, -266, -370, 431, -9R, -125, -1251. Parker Hannifin Fluid Systems Division - [STC SA00290BO](https://openairdocs.org/stc/SA00290BO): Installation of Avidyne Corporation Part Number 700-00167-XXX Multi-Function Display and Mounting Tray Assembly Part Number 700-00168-XXX. Avidyne Corporation - [STC ST02540AT-D](https://openairdocs.org/stc/ST02540AT-D): Installation of replacement fuel tank sealant system. FFC Manufacturing - [STC SA01473SE](https://openairdocs.org/stc/SA01473SE): Installation of a GTX 32 (mode C), GTX 33 (mode S), or GTX 33D (mode S with diversity) Remote Transponde. Garmin AT Inc - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SA30GL](https://openairdocs.org/stc/SA30GL): Installation of electronic engine synchronizer system. Ontic Engineering and Manufacturing Inc - [STC SA412CE](https://openairdocs.org/stc/SA412CE): Installation of Woodward Electronic Engine synchronizer system. Ontic Engineering and Manufacturing Inc - [STC SA01695SE](https://openairdocs.org/stc/SA01695SE): Installation of an antenna. Garmin AT Inc - [STC SA01401WI](https://openairdocs.org/stc/SA01401WI): Installation of Rosemount Pitot/Static Probes, altimeters, and associated equipment. Avcon Industries Inc - [STC SA01487SE](https://openairdocs.org/stc/SA01487SE): Installation of a GDL 69 or GDL 69A XM Satellite Receiver in accordance with Garmin Supplemental Type Certificate Master Data List, P/N 005-C0217-00, Revision A, dated December 20, 2004, or later FAA approved revision. Garmin AT Inc - [STC SA00161BO](https://openairdocs.org/stc/SA00161BO): Installation of Avidyne Corporation FlightMax 700-00007-( ) EX500 Multi-Function Display. Avidyne Corporation - [STC SA02154AK](https://openairdocs.org/stc/SA02154AK): Installation of the UPS Aviation Technologies Inc. Apollo MX20 multi-function display, P/N 430-0270-500. Garmin AT Inc - [STC SA02217AK](https://openairdocs.org/stc/SA02217AK): Installation of Garmin AT Model GDL90 UAT Data Link System, in accordance with Garmin AT, Inc., GDL 90 UAT Master Data List, P/N 560-0278-01, Revision A, dated November 12, 2004, or later FAA approved revision. Garmin AT Inc - [STC SA3342NM](https://openairdocs.org/stc/SA3342NM): Cockpit sun visor installation. Rosen Sunvisor Systems LLC - [STC SA00165BO](https://openairdocs.org/stc/SA00165BO): Installation of Avidyne Corporation Datalink Coupler, part number 700-00015-000 per Avidyne Corporation Master Document List, Document No. AVACP-006 dtd 1/2/93 or later FAA-approved revisions. Avidyne Corporation - [STC SA2992WE](https://openairdocs.org/stc/SA2992WE): Installation of logo lights on horizontal stabilizer lower surface. DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SA2304SW](https://openairdocs.org/stc/SA2304SW): Replacement of plunger type landing gear squat switch with rotary type switch. Sierra Industries, Inc - [STC SA2726SW](https://openairdocs.org/stc/SA2726SW): Installation of 6-pole rotary squat switches. Sierra Industries, Inc - [STC SA5656NM](https://openairdocs.org/stc/SA5656NM): Installation of burglar alarm system. Thompson Harold S - [STC SA2661SW](https://openairdocs.org/stc/SA2661SW): Installation of Ray Model 7507A battery monitoring system. Zee Company, Inc - [STC SA2657SW](https://openairdocs.org/stc/SA2657SW): Modification of air conditioner motor. Zee Systems, Inc - [STC SA639AL](https://openairdocs.org/stc/SA639AL): Installation of Model EP-110 starter/generator decoupler system on Models 23, 24, 25 airplanes using Bendix Model30B-37 starter generators. Jet Accessories Inc - [STC SA2861SW](https://openairdocs.org/stc/SA2861SW): Addition of Hydro seal fluid additive to nose and main gear shock struts. Granville Lasseter/dba Granville's Aircraft Strut Sealant - [STC SA175RM](https://openairdocs.org/stc/SA175RM): Replacement of throttle knob, Model EP-004, for 20 series Learjet equipped with Dee Howard thrust reversers. Jet Accessories Inc - [STC SA00281BO PAGE 2](https://openairdocs.org/stc/SA00281BO%20PAGE%202) (historical): Installation of Avidyne Corporation MLX770 MultiLink Broadcast Transceiver P/N 700-00163-( ), Sensor Systems Inc. Antenna P/N S67-1575-109, or equivalent, and optional Avidyne Mounting Tray P/N 700-00165-000. Avidyne Corporation - [STC SA01933LA](https://openairdocs.org/stc/SA01933LA) (historical): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin AT Inc - [STC SA01229SE](https://openairdocs.org/stc/SA01229SE) (historical): Installation of CNX80 GPS WAAS Navigator with integrated VHF Navigation and Communication radios. UPS Aviation Technologies ### Approved for the engine (GE CJ-610-4) - [STC SE976SO](https://openairdocs.org/stc/SE976SO): Installation of an oil tank sight gauge on a G.E. oil tank, P/N6003T09P04. JSF Aviation Services Inc. Lists CJ610 Series All 54: https://openairdocs.org/aircraft/N73CE/stcs.md ## Earlier aircraft with N73CE The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N73CE before. - [Cancelled 1994-03-03](https://openairdocs.org/deregistered/N73CE-1994-03-03): Cessna P210N, S/N P21000369. Owner: [Yankee Sooner Charters Inc](https://openairdocs.org/faa-owner/YANKEE%20SOONER%20CHARTERS%20INC), [South Burlington, VT](https://openairdocs.org/faa-place/VT/South%20Burlington) ## Related - Other Learjet 23 aircraft: https://openairdocs.org/model/learjet-23/aircraft.md - The GE CJ-610-4 engine: https://openairdocs.org/engine/ge-cj-610-4.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.