# N74HT: 2007 Learjet 60 - Status: Valid registration - Airframe: [Learjet 60](https://openairdocs.org/model/learjet-60) (registry code 5170707, 11 seats) - Engine: [Pratt & Whitney Canada PW305A](https://openairdocs.org/engine/pratt-whitney-canada-pw305a) (registry code 52190) - Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (Learjet Inc.), [TCDS E35NE](https://openairdocs.org/tcds/E35NE) (Pratt & Whitney Canada Corp.) (OpenAirDocs) - Serial number: 324 - Year built: 2007 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: September 24, 2007 - Certificate issued: May 6, 2022 - Expires: May 31, 2029 - Mode S code: A9F0F2 - Registered owner: [American Jet International Corp](https://openairdocs.org/faa-owner/AMERICAN%20JET%20INTERNATIONAL%20CORP) - Location: [Houston, TX](https://openairdocs.org/faa-place/TX/Houston) - Owner type: Corporation - Owner's area on the map: 29.6462° N, 95.2771° W: Placed by OpenAirDocs at the center of ZIP code 77061, 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=74HT - Page: https://openairdocs.org/aircraft/N74HT From the FAA registry file of October 21, 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): 23 in force ### Matched by airframe (Learjet 60) - [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 2020-11-04](https://openairdocs.org/ad/2020-11-04): Engine Exhaust · Learjet 60. Effective Jun 25, 2020 - [AD 2019-17-01](https://openairdocs.org/ad/2019-17-01): Fuselage · Learjet 60. Effective Oct 2, 2019 - [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 2013-24-04](https://openairdocs.org/ad/2013-24-04): Fuel · Learjet 60. Effective Mar 14, 2014 - [AD 2013-13-09](https://openairdocs.org/ad/2013-13-09): Landing gear, Wings, Engine exhaust · Learjet 60. Effective Aug 6, 2013 - [AD 2012-08-16](https://openairdocs.org/ad/2012-08-16): Extinguishing system · Learjet 60. Effective May 29, 2012 - [AD 2010-11-11](https://openairdocs.org/ad/2010-11-11): Landing gear · Learjet 60. Effective Jul 13, 2010 - [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 2002-14-19](https://openairdocs.org/ad/2002-14-19): Collins Air Data Computers (ADC) · Boeing DC-8-11, DC-8-12, DC-8-21 and 36 more. Effective Aug 23, 2002 - [AD 2001-12-02](https://openairdocs.org/ad/2001-12-02): Brake Valve · Learjet 55, 55B, 55C and 1 more. Effective Jul 18, 2001 - [AD 2000-23-18](https://openairdocs.org/ad/2000-23-18): Oxygen Tubing · Learjet 60. Effective Dec 26, 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 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 98-16-18](https://openairdocs.org/ad/98-16-18): Brake Wear Dimension · Learjet 60. Effective Aug 24, 1998 - [AD 96-18-01](https://openairdocs.org/ad/96-18-01): Aft Core Cowl Nozzle of Engine Nacelles · Learjet 60. Effective Oct 2, 1996 - [AD 95-21-03](https://openairdocs.org/ad/95-21-03): Engine Fire Pull Switch Assembly · Learjet 31A and 60. Effective Oct 26, 1995 - [AD 94-01-06](https://openairdocs.org/ad/94-01-06): Traffic Alert and Collision Avoidance System II Processors · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 176 more. Effective Feb 4, 1994 - [AD 93-23-12](https://openairdocs.org/ad/93-23-12): Heating Systems · Learjet 60. Effective Dec 15, 1993 ### Matched by engine (Pratt & Whitney Canada PW305A) - [AD 2010-24-05](https://openairdocs.org/ad/2010-24-05): Failure of the impeller · Pratt & Whitney Canada PW305A and PW305B. Effective Jan 3, 2011 - [AD 2009-14-12](https://openairdocs.org/ad/2009-14-12): High Pressure Compressor (HPC) · Pratt & Whitney Canada PW305A and PW305B. Effective Aug 13, 2009 - [AD 2008-13-16](https://openairdocs.org/ad/2008-13-16): Fan blade · Pratt & Whitney Canada PW305A and PW305B. Effective Jul 10, 2008 - [AD 2001-04-10](https://openairdocs.org/ad/2001-04-10): Low Pressure Turbine (LPT) Disks · Pratt & Whitney Canada PW305 and PW305A. Effective Apr 6, 2001 ### Historical (superseded or no longer in force) - [AD 2017-11-09](https://openairdocs.org/ad/2017-11-09) (historical): Fuselage · Learjet 60. Effective May 30, 2017 - [AD 2017-08-07](https://openairdocs.org/ad/2017-08-07) (historical): Fuselage · Learjet 60. Effective May 22, 2017 - [AD 2003-19-11](https://openairdocs.org/ad/2003-19-11) (historical): Fuel crossflow tube · Learjet 60. Effective Nov 3, 2003 - [AD 95-14-09](https://openairdocs.org/ad/95-14-09) (historical): Fuel Crossflow Tube · Learjet 60. Effective Aug 3, 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-12-25](https://openairdocs.org/saib/NM-12-25): Auto Flight: Altitude Controller. Issued Apr 16, 2012 - [SAIB 2024-04](https://openairdocs.org/saib/2024-04): Electronic Engine Control Units. Issued Oct 29, 2024 ## NTSB investigations None matched to N74HT. ## FAA accident and incident reports None matched to N74HT. ## Service difficulty reports (4) As reported by operators and repair stations. - [SDR 9JLA2021110234478](https://openairdocs.org/sdr/9JLA2021110234478), Oct 26, 2021: CIRCUIT BREAKER. BROKEN. THE MAINTENANCE TECH REPORTED THAT DURING TROUBLESHOOTING OF APU SYSTEM IT WAS DISCOVERED THAT AN APU CIRCUIT BREAKER ON THE APU START PANEL WAS FOUND TO BE BRO - [SDR 9JLA2021110226495](https://openairdocs.org/sdr/9JLA2021110226495), Aug 1, 2021: COMPUTER. DEFECTIVE. THE FLIGHT CREW REPORTED THE THE ENGINE DIAGNOSTIC SYSTEM (EDS) ANNUNCIATOR WAS ILLUMINATED. OPERATIONS WERE CONTINUED ON MEL. AT THE MAINTENANCE OPPORTUNITY, T - [SDR 9JLA2021062126474](https://openairdocs.org/sdr/9JLA2021062126474), May 22, 2021: BRACKET. MISSING. FLIGHT CREW REPORTED THAT UPON LANDING THE LEFT THRUST REVERSER DID NOT DEPLOY, NO TR LIGHTS ON LEFT SIDE. THE MAINTENANCE TEAM FOUND THE LEFT MAIN LANDING GEAR - [SDR 9JLA2021052526474](https://openairdocs.org/sdr/9JLA2021052526474), May 22, 2021: RETAINER. MISSING. THE FLIGHT CREW REPORTED THAT DURING LANDING THE LEFT THRUST REVERSER DID NOT DEPLOY, NO TR LIGHTS ON LEFT SIDE. THE MAINTENANCE TEAM TROUBLESHOT AND FOUND LEFT ## Related - Other Learjet 60 aircraft: https://openairdocs.org/model/learjet-60/aircraft.md - STCs for the Learjet 60: https://openairdocs.org/model/learjet-60/stcs.md - The Pratt & Whitney Canada PW305A engine: https://openairdocs.org/engine/pratt-whitney-canada-pw305a.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.