Learjet 23 airworthiness directives

Aircraft by year built · 49

1919Registered nowDeregistered2026

Aircraft by the year they were built: 49 aircraft
1919	1
1964	1
1965	35
1966	10
1983	1
2002	1

Airworthiness directives that may apply · 29

ADs whose products match this airframe model. Each AD’s applicability may narrow it by serial number, part number or configuration.

1966In forceSuperseded2026

ADs by the year they took effect: 28 ADs
1966	2
1969	1
1971	1
1972	1
1974	1
1975	1
1978	3
1980	2
1981	2
1985	1
1986	2
1988	1
1992	1
1995	1
1999	1
2001	1
2005	5
2007	1

Airframe · Learjet 23

AD 2007-04-18Left- and right-hand standby fuel pump switchesEffective Mar 23, 2007 AD 2005-23-06Thrust reverser hydraulic systemEffective Dec 19, 2005 AD 2005-23-03Spherical accumulator for the main hydraulic systemEffective Dec 19, 2005

See all 30 ADs

Query with SQL

duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('5170102'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('5170102'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

Information bulletins that may apply · 2

Airframe · Learjet 23

SAIB 2026-07MAIN LANDING GEAR ATTACH SECTION, Trunnion PinsIssued Mar 19, 2026 SAIB NM-13-38Flight Controls Control Column SectionIssued Jun 24, 2013

Query with SQL

duckdb -csv -c "SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
  FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
  WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_saib.parquet' WHERE aircraft_model_code IN ('5170102'))
  GROUP BY s.saib_number ORDER BY issue_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_saib.parquet' WHERE aircraft_model_code IN ('5170102'))
GROUP BY s.saib_number ORDER BY issue_date DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

Registered aircraft · 6

N119BARegistration Pending · Tucson, AZRegistration pendingBuilt 1965 · S/N 23-084 N200YClassic Lear Jet Foundation · Wichita, KSS/N 23-003 N23BYYounkin Matthew A · Siloam Springs, ARBuilt 1965 · S/N 23-009 N477KRegistered aircraftBuilt 1965 · S/N 23036 N73CEYanks Air Museum · Baldwin Park, CABuilt 1965 · S/N 23068 N823LJArtemis Aviation Group LLC · Kalispell, MTS/N 23-082A

Query with SQL

duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
  WHERE aircraft_model_code IN ('5170102')
  ORDER BY n_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
WHERE aircraft_model_code IN ('5170102')
ORDER BY n_number

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB investigations · 25

Aircraft matched to this model through the registry, by N-number and event date, checked against the reported serial number, make and model.

First occurrence, 1982 to 2007

Of 7 cases with NTSB’s older coding, defined in its coding manual.

NTSB LAX98LA105Accident · No injuriesLimited investigationFinal reportLearjet 23 · Oakdale, CAfailure of the flight crew to extend the landing gear before landing.Mar 4, 1998 · N37BL · Substantial damage NTSB CHI95LA013Accident · No injuriesLimited investigationFinal reportLearjet 23 · Holland, MIThe copilot's misjudgment of the touchdown point, and the pilot in command's inadequate supervision to avoid the accident.Oct 14, 1994 · N20TA · Substantial damage NTSB CHI91MA224Accident · 3 fatalMajor investigationFinal reportLearjet 23 · Detroit, MIImproper preflight by the pilot, his failure to abort the takeoff while there was sufficient runway remaining, and his failure to assure that the aircraft attained sufficient airspeed for lift-off and climb. Factors related to the accident were: the pilot's…Jul 23, 1991 · N959SC · Destroyed

See all 25 investigations

Query with SQL

SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey WHERE a.aircraft_model_code IN ('5170102') ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
  WHERE a.aircraft_model_code IN ('5170102')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey
WHERE a.aircraft_model_code IN ('5170102')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

FAA incident reports · 29

Matched to this model through the registry, by N-number and event date, checked against the reported make and model.

Accident 19980304002559ALear 23LEAR · Oakdale, CAStudent and CFI failed to extend the landing gear. Landed gear up. (.4)the pilot stated in his accident report that there was no crew action to extend the landing gear prior to touchdown. (-23)PIC reported that flt crew failed to extend landing gear.Mar 4, 1998 · N37BL · Substantial damage Incident 19950517015009ILear 23LEAR · Decatur, ILNarrative: a mechanical reliability report will be submitted to the chdo as required by FAR 135.415 (a)(6). During a repositioning flight from sus to ord on may 17, 1995, N154AG, a Lear 23, experienced an engine flameout on the left engine. According to the…May 17, 1995 · N154AG Accident 19941014038049ALear 23LEAR · Holland, MISIC landed short in a yaw. Damaged left main gear. Pilot flew back home base. Left main collapsed landing.Oct 14, 1994 · N20TA · Substantial damage

See all 29 incident reports

Query with SQL

duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
  FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
  WHERE aircraft_model_code IN ('5170102')
  ORDER BY event_date DESC, report_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
WHERE aircraft_model_code IN ('5170102')
ORDER BY event_date DESC, report_number DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

Service difficulty reports · 7

SDR 2023FA0000798Control Tube · shearedAIRCRAFT WAS IN DECENT, WHEN PILOT INPUTTED 1/4 TO 1/2 INCH MOVEMENT OF THE CONTROL WHEEL, CONTROLS BECAME LIGHT FOLLOWED BY THE AIRCRAFT SHAKING VIOLENTLY. THE CONTROL YOKE FLUCTUATED BETWEEN FULL FORWARD AND FULL AFT REQUIRING BOTH PILOT AND INSTRUCTOR PILOTNov 29, 2023 · N2358Z · Beech 23 · Flight Controller SDR 2011FA0000706Structure · misinstalledON 1/2011 DURING A WALK AROUND PRIOR TO AN ANNUAL INSPECTION THE RT WING LE WAS FOUND LOOSE. INSPECTION OF THIS AREA DISCLOSED THAT THE LE WAS MISINSTALLED. THE DISCREPANCY WAS CORRECTED.Oct 26, 2011 · N2310Q · Beech 23 · Wing Main, Frame Structure SDR 2005FA0001228Control Cable · fracturedTHE PILOT LOST ENGINE POWER DURING TAKEOFF. EXAM FOUND MIXTURE CONTROL CABLE FRACTURED AT 90-DEGREE ANGLE NEAR SET SCREW TO CARBURETOR. FATIGUE ON CABLE INDICATES INSTALLATION ERROR. FRACTURE COULD NOT BE SEEN DUE TO OUTER SHEATH ON MIXTURE CONTROL CABLE.Aug 29, 2005 · N2388Q · Beech 23 · Mixture Control SDR 99ZZZX1566Rudder Assy · out of adjustRUDDER SKIN BINDING AGAINST VERTICAL STABILIZER SKIN DURING FULL DEFLECTION.Mar 25, 1999 · N8761M · Beech 23 · Rudder, Plate/Skin SDR 97ZZZX3743Duct · collapsedENGINE LOST RPM AND STOPPED. INSPECTION REVEALED AIR INTAKE DUCT COLLAPSED BETWEEN CARB AIRBOX AND CARB. INCORRECT TYPE AND PART NUMBER DUCT INSTALLED PREVIOUSLY. SCAT 12 SHOULD BE SCEET 12 (DOUBLE WALL). BOTH SCAT AND SCEET ARE SAME COLOR AND SIMILAR IN AAug 11, 1997 · N6083N · Beech 23 · Engine Air Intake System SDR 97ZZZX1128Ground Wire · burnedTHIS GROUND WIRE GROUNDS THE STARTER/VIBRATOR CIRCUIT. IT WAS GROUNDED VIA A COPPER CLAMP TO THE MAG. P-LEAD SHIELDING. THE P-LEAD SHIELDING WAS GROUNDED ONLY AT THE MAGNETO. THE GROUND WIRE, J4A18N, COULD NOT HANDLE THE LOAD DURING START, AND, OVER TIME, Feb 26, 1997 · N2368L · Beech 23 · Engine Cranking SDR 96ZZZX597Generator · brushes failedGENERATOR WENT 'OFF LINE'. DISASSEMBLY FOUND BRUSH LEADS CUT AND FRAYED BY BRUSH HOLDERS. REAR BEARING FOUND LOOSE IN REAR HOUSING CAUSING ROTATIONAL VIBRATION WHICH CAUSED BRUSH LEADS TO HIT BRUSH HOLDERS.Jan 15, 1996 · N8722M · Beech 23 · DC Generator-Alternator

Query with SQL

duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE aircraft_model_key = '23'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = '23'
ORDER BY difficulty_date DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

STCs that may be installed · 49

Approved for this model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.

STC ST03424CHCertification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D TranspondersCMD Flight Solutions LLC STC SA02658SEInstallation of Garmin GI 275 Multi-Function Display SystemGarmin International Inc.STC SA09856ACInstallation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & EquipmentsHoneywell International Inc (Bendix King)

See all 49 STCs

Query with 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 ('5170102') 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

duckdb -csv -c "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 ('5170102')
    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"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

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 ('5170102')
  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

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

Beech 23147 registered aircraftRegistry code 1151202 Curtiss-Wright 230 registered aircraftRegistry code 05621CM Consolidated 230 registered aircraftRegistry code 242210A Nieuport 230 registered aircraftRegistry code 6300120

Query with SQL

duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = '23' AND m.code NOT IN ('5170102')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
WHERE m.match_key = '23' AND m.code NOT IN ('5170102')
GROUP BY ALL
ORDER BY aircraft DESC
LIMIT 12

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.