Learjet 23
6 on the U.S. register. Built from 1965. Montana has the most (1). 67% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the 23 from the FAA's model table
- Type
- Fixed-wing, multi-engine · Business jets
- Power
- Turbojet, 2 engines
- Common engines
- Ge Cj610-Ser (4), Ge Cj-610-4 (2)
- Seats
- 8
- Cruise speed
- about 315 mph
- Built of
- aluminium
- Maker on the register
- Learjet Inc
- Registered
- earliest certificate September 12, 2007; newest August 18, 2026
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| LLC | 2 | 33% |
| Individual | 2 | 33% |
| Corporation | 2 | 33% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| 23 | 6 | 1965 | 100.0% |
Airworthiness certificate class
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| Yanks Air Museum | 1 |
| Classic Lear Jet Foundation | 1 |
| Artemis Aviation Group LLC | 1 |
Fleet pages: Yanks Air Museum · Artemis Aviation Group LLC
Accident history NTSB records · 8 cases since 1982, 3 fatal
The 8 most recent of 8 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Learjet 23 aircraft are registered in the U.S.?
6 as of November 2, 2026, counting 1 version the FAA records separately.
Which state has the most Learjet 23s?
Montana, with 1.
Who owns the Learjet 23?
67% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Learjet 23s on the register built?
In 1965.
How many Learjet 23 accidents has the NTSB recorded?
8 accidents and incidents since 1982, 3 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Learjet 23 made of?
The airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Learjet 23 the component layer
The airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. The design is held under 1 type certificate (A5CE, held by Learjet INC.). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name this model, most of them about other and general. Operators and repair shops have filed 17 failure reports with the FAA since 1995, 7 of them in the last ten years: about 58.3 a year for every 100 aircraft on the register; the system most often named is engine. 18 approved modifications exist for it, the most by The Nordam Group LLC.
FAA orders 29 airworthiness directives · newest first
All orders naming the Learjet 23
By system
Orders by system, as a table
| orders | share | |
|---|---|---|
| Other and general | 7 | 24% |
| Flight controls | 6 | 21% |
| Airframe structure | 3 | 10% |
| Landing gear | 3 | 10% |
| Heating, ice protection and utility systems | 2 | 7% |
| Electrical power | 2 | 7% |
| Cabin, seats and restraints | 2 | 7% |
| Fuel system | 1 | 3% |
Failure reports 17 since 1995 · what operators and shops told the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 95 | 4 |
| 97 | 1 |
| 98 | 1 |
| 99 | 2 |
| 00 | 2 |
| 21 | 2 |
| 22 | 5 |
By system
Failure reports by system, as a table
| reports | share | |
|---|---|---|
| Engine | 7 | 41% |
| Heating, ice protection and utility systems | 4 | 24% |
| Flight controls | 2 | 12% |
| Airframe structure | 2 | 12% |
| Instruments and avionics | 1 | 6% |
| Electrical power | 1 | 6% |
Parts most often reported as the reports name them
Parts most reported, as a table
| reports | |
|---|---|
| Engine | 4 |
| Battery | 1 |
| Bleed Valve | 1 |
| Fuel Control | 1 |
| Hose | 1 |
| Lever | 1 |
| Line | 1 |
| Regulator | 1 |
| Tach Generator | 1 |
Latest reports
Approved replacement parts 271 parts manufacturer approvals
Parts a company other than the maker may make for this design and sell as FAA-approved. The companies holding the most:
Most often: windshield (12), fuel filter (11), washer (8), cable (8), provisions for (7), valve (6), rod end (6), nut (6), gauge (6), structural provisions (5).
Approved modifications 18 supplemental type certificates
Changes the FAA has approved for this design, from new avionics and engines to floats and parachutes. The companies holding the most:
Latest
Certificates and bulletins
Safety bulletins 2 · advice, not orders
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the 23 links to the rest of the register
- Learjet 0 aircraft on the register
- Learjet 23 6 registered
- Built of aluminium
- General Electric CJ610-series 4 of these aircraft · 2700 hp
- General Electric CJ-610-4 2 of these aircraft
- Montana 1 of these aircraft
- Kansas 1 of these aircraft
- California 1 of these aircraft
- Arizona 1 of these aircraft
- Arkansas 1 of these aircraft
- Yanks Air Museum 1 of these aircraft
- Classic Lear Jet Foundation 1 of these aircraft
- Artemis Aviation Group LLC 1 of these aircraft
- NTSB accidents and incidents involving the 23 8 cases since 1982 · 3 fatal
- FAA filings this year on these aircraft 2 filings · 2 bill of sale
- FAA orders naming the 23 29 airworthiness directives
- Failure reports filed on the 23 17 reports since 1995
- Approved modifications for the 23 18 supplemental type certificates
The whole map of how records connect · these connections as data: /graph/model/learjet/23.json.
Aircraft newest certificates first · 6
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N823LJ | Learjet Inc 23 |
Artemis Aviation Group LLC Kalispell, Montana |
Standard | 2026-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N200Y | Learjet Inc 23 |
Classic Lear Jet Foundation Wichita, Kansas |
Standard | 2023-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N477K | Learjet Inc 23 |
Standard | 2021-06-15 | ValidFAA registration status code V: Valid registration. All codes | |
| N23BY | Learjet Inc 23 |
Individual owner Arkansas |
Standard | 2015-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N73CE | Learjet Inc 23 |
Yanks Air Museum Baldwin Park, California |
Standard | 2007-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N119BA | Learjet Inc 23 |
Individual owner Arizona |
Standard | PendingFAA registration status code R: Registration pending. All codes |