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LEARJET INC 31A

104 registered · 1991–2002 · 1 NTSB events · 36 ADs

About this data

Fixed Wing Multi Engine · GARRETT TFE731 SERIES · as of Sep 21, 2026

Distribution · currently registered

By state (top 10)

  • DE 18.3% 19
  • CA 9.6% 10
  • NY 8.7% 9
  • UT 6.7% 7
  • TX 6.7% 7
  • PA 4.8% 5
  • OK 4.8% 5
  • OH 4.8% 5
  • FL 4.8% 5
  • AZ 3.8% 4

+19 more states

By decade of manufacture

  • 1990s 62.5% 65
  • 2000s 23.1% 24
  • Unknown 14.4% 15

NTSB records

1 event(s) on file. Showing the most recent 1.

Airworthiness directives

36 directive(s) on file. Showing the most recent 25 · 11 more in the Federal Register.

  • Apr 24, 2019

    Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units

    We are adopting a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This AD requires removing certain LCR-100 AHRS units from service. This AD was prompted by test results showing loss of or invalid data. The actio…

  • Sep 18, 2018

    Airworthiness Directives; Learjet, Inc. Airplanes

    We are adopting a new airworthiness directive (AD) for certain Learjet, Inc. Models 28, 29, 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and 60 airplanes. This AD was prompted by fatigue cracks initiating in the flap support structure due to repetitive flap loads, which has caused flap nose roller support bracket failure.…

  • May 8, 2018

    Airworthiness Directives; Learjet, Inc. Airplanes

    We propose to adopt a new airworthiness directive (AD) for certain Learjet, Inc. Models 28, 29, 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and 60 airplanes. This proposed AD was prompted by fatigue cracks initiating in the flap support structure due to repetitive flap loads, which has caused flap nose roller support bra…

  • Jun 5, 2017

    Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units

    We propose to adopt a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This proposed AD would require removing certain LCR-100 AHRS units from service. This proposed AD is prompted by test results showing loss of…

  • Nov 18, 2016

    Airworthiness Directives; Learjet Inc. Airplanes

    We propose to adopt a new airworthiness directive (AD) for certain Learjet Inc. Model 36A airplanes. This proposed AD was prompted by a report indicating that an aileron cable failed on an airplane during a tension check and a determination that Model 36A airplanes were not included in AD 2005-13-36, which addresses t…

  • Mar 17, 2010

    Airworthiness Directives; Honeywell International Inc. TFE731 Series Turbofan Engines

    The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. TFE731 series turbofan engines with certain second stage low-pressure compressor rotor (LPCR) discs and/or certain third stage LPCR discs installed. This AD requires removing from service certain second stage LPCR discs and/or cert…

  • Dec 11, 2009

    Airworthiness Directives; Honeywell International Inc. TFE731 Series Turbofan Engines

    This supplemental NPRM revises an earlier proposed airworthiness directive (AD), for Honeywell International Inc. TFE731 series turbofan engines with certain second stage low-pressure compressor rotor (LPCR) discs and/or certain third stage LPCR discs installed. That proposed AD would have required removing from servi…

  • Apr 13, 2009

    Airworthiness Directives; Honeywell International Inc. TFE731 Series Turbofan Engines

    The FAA proposes to adopt a new airworthiness directive (AD) for Honeywell International Inc. TFE731 series turbofan engines with certain second and third stage low-pressure compressor rotor (LPCR) discs installed. This proposed AD would require removing from service, certain second and third stage LPCR discs, part nu…

  • Aug 28, 2007

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes, and Model 45 Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C airplanes, and Model 45 airplanes. This AD requires inspecting for unsealed gaps on the pylon side of the engine firewall and cleaning/ sealing any unsealed gap; and, for certain airplan…

  • Apr 26, 2007

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes, and Model 45 Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C airplanes, and Model 45 airplanes. This proposed AD would require inspecting for unsealed gaps on the pylon side of the engine firewall and cleaning/sealing any unsealed gap; and,…

  • Feb 16, 2007

    Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C- 21A), 36, 36A, 55, 55B, and 55C airplanes. This AD requires modifying the left- and right-hand standby fuel pump switches…

  • Aug 16, 2006

    Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C airplanes. This proposed AD would require modifying the left- and right-hand standby…

  • Jul 5, 2005

    Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C- 21A), and 36 airplanes. This AD requires a one-time inspection of the center ball of the aileron control cable or cables…

  • Jun 7, 2005

    Airworthiness Directives; Precise Flight, Inc. Models SVS I and SVS IA Standby Vacuum Systems

    The FAA adopts a new airworthiness directive (AD) for all airplanes equipped with Precise Flight, Inc. (Precise Flight) Models SVS I and SVS IA standby vacuum systems (SVS) installed under certain supplemental type certificates or through field approval. This AD requires you to replace the airplane flight manual suppl…

  • Apr 6, 2005

    Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, 25F, 28, 29, 31, 31A, 35, 35A (C-21A), and 36 airplanes. This proposed AD would require a one-time inspection of the center ball of the aileron contr…

  • Mar 4, 2005

    Airworthiness Directives; Precise Flight, Inc. Models SVS I and SVS IA Standby Vacuum Systems

    The FAA proposes to adopt a new airworthiness directive (AD) for all airplanes equipped with Precise Flight, Inc. (Precise Flight) Models SVS I and SVS IA standby vacuum systems (SVS) installed under certain supplemental type certificates or through field approval. This proposed AD would require you to replace the air…

  • Jan 19, 2005

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD a…

  • Oct 7, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA proposes to supersede Airworthiness Directive (AD) 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This proposed AD applies to certain GTX 33…

  • May 21, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA adopts a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders that are installed on aircraft. This AD requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD is the result of observations that the GTX 330 and GTX 330D may…

  • Feb 9, 2004

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A (C-21A), 36, and 36A Airplanes

    This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 31, 31A, 35, 35A (C-21A), 36, and 36A airplanes, that requires modification of the drag angles of the fuselage and engine pylons to gain access to the shear webs of the forward engine beams; repetitive inspections of the shea…

  • Dec 30, 2003

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA proposes to adopt a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders. This proposed AD would require you to install GTX 330/ 330D Software Upgrade Version 3.03. This proposed AD is the result of observations that the GTX 330 and GTX 330D may detect, fr…

  • Nov 13, 2003

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A (C-21A), 36, and 36A Airplanes

    This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Learjet Model 31, 31A, 35, 35A (C-21A), 36, and 36A airplanes. This proposal would require modification of the drag angles of the fuselage and engine pylons to gain access to the shear webs of the forward engine bea…

  • Apr 16, 2001

    Airworthiness Directives; Learjet Model 23, 24, 25, 28, 29, 31, 35, 36, and 55 Series Airplanes

    This amendment adopts a new airworthiness directive (AD) that is applicable to all Learjet Model 23, 24, 25, 28, 29, 31, 35, 36, and 55 series airplanes. This action requires an inspection to determine if tires on the main landing gear have a certain part number and certain serial numbers, and replacement with a tire…

  • Nov 16, 1999

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A, and 60 Airplanes

    This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 31, 31A, 35, 35A, and 60 airplanes, that requires a visual inspection of the spoiler actuators to determine the serial number of the spoiler actuators; and replacement of the spoiler actuators with new actuators, if necessary…

  • Aug 30, 1999

    Airworthiness Directives; Learjet Model 31, 31A, 35, 35A, and 60 Airplanes

    This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Learjet Model 31, 31A, 35, 35A, and 60 airplanes. This proposal would require a visual inspection of the spoiler actuators to determine the serial number of the spoiler actuators; and replacement of the spoiler actu…

Type certificate data sheets · 1 match in the FAA catalog

  • A10CE Learjet Inc. Historical Rev 64 · 12/28/2010

    Models: 25B, 24F-A, 36A, 24A + 25 more

Supplemental type certificates · 227 on file

+ 197 more STCs on file

PMA replacement parts · 29 on file

Registered N-numbers · 104

104 of 104 ● NTSB events on file · orange tails have Atlas pages · Look up queries the live FAA registry (owner, address, last airworthiness)
N-number St Year NTSB FAA
N121LJ NY 1996 · Look up ↗
N125FS DE 1996 · Look up ↗
N127VL DE 1991 · Look up ↗
N128BG DE 2000 · Look up ↗
N139LR UT 1997 · Look up ↗
N154RT TX 1998 · Look up ↗
N171AR NY 1999 · Look up ↗
N1926S CA 1999 · Look up ↗
N1932K DE 1994 · Look up ↗
N200KB DE 1994 · Look up ↗
N204RT CA 2000 · Look up ↗
N20XP PA 2000 · Look up ↗
N218NB NE 1998 · Look up ↗
N229LJ AR 2001 · Look up ↗
N239AY TX — · Look up ↗
N239CA CA 1996 · Look up ↗
N239JC DE 2002 · Look up ↗
N240B NY 1999 · Look up ↗
N255TK OK 2000 · Look up ↗
N25BB CA 1995 · Look up ↗
N260LF NE 2001 · Look up ↗
N260RC WY 1993 · Look up ↗
N269HP CA 1998 · Look up ↗
N278TT NY 1995 · Look up ↗
N29SN PA — · Look up ↗
N2SM WY 1991 · Look up ↗
N312TL CA 1999 · Look up ↗
N314SG UT 1997 · Look up ↗
N31DT OK 1997 · Look up ↗
N31EA DE 1996 · Look up ↗
N31KH DE 1999 · Look up ↗
N31LJ DE 1994 · Look up ↗
N31TK CO 1992 · Look up ↗
N31ZV DE 1996 · Look up ↗
N322PR AZ 1991 · Look up ↗
N32HH AZ 2000 · Look up ↗
N331JA AR 2001 · Look up ↗
N331US OR 2000 · Look up ↗
N342JP GA 1994 · Look up ↗
N351AC HI — · Look up ↗
N352EF KS 1992 · Look up ↗
N365GL DE 1996 · Look up ↗
N36BL CA 1994 · Look up ↗
N37BM NV 1994 · Look up ↗
N405VS NY 2001 · Look up ↗
N406VS NY — · Look up ↗
N40LJ TN 1998 · Look up ↗
N412SW DC 2002 · Look up ↗
N418DL PA 1999 · Look up ↗
N431DA OH 1998 · Look up ↗
N444HC NC 1992 · Look up ↗
N45LJ FL 1998 · Look up ↗
N480ME AZ 1993 · Look up ↗
N484BA UT 1998 · Look up ↗
N500MP MI 2000 ● Look up ↗
N500WF PA 1996 · Look up ↗
N501RS NV 2001 · Look up ↗
N50LJ FL — · Look up ↗
N511KD UT 1994 · Look up ↗
N515CS AL 1999 · Look up ↗
N524HC TX 1995 · Look up ↗
N535PS KS 1999 · Look up ↗
N548LM KS 1992 · Look up ↗
N54AP NY — · Look up ↗
N5695B FL 1999 · Look up ↗
N57TS DE — · Look up ↗
N616LK ME 2002 · Look up ↗
N61VW DE 1991 · Look up ↗
N631KA DE 2000 · Look up ↗
N633PJ OK 2002 · Look up ↗
N638HP UT — · Look up ↗
N645HA MO 1996 · Look up ↗
N64NB TX — · Look up ↗
N659BX OK — · Look up ↗
N669MD AZ 1992 · Look up ↗
N68VP TX — · Look up ↗
N699GG NC 1999 · Look up ↗
N702GW CA — · Look up ↗
N70AY DE 1999 · Look up ↗
N711FG TX 1994 · Look up ↗
N71AL OK — · Look up ↗
N724SA VA 1993 · Look up ↗
N729WL OH 2000 · Look up ↗
N732SC CA — · Look up ↗
N744N NY 1993 · Look up ↗
N76CD SC — · Look up ↗
N784AM CA 1995 · Look up ↗
N789SR UT 1993 · Look up ↗
N800CK DE 1998 · Look up ↗
N821SE DE 2001 · Look up ↗
N834AF OH 2001 · Look up ↗
N840SW FL 1994 · Look up ↗
N895DM AL 2000 · Look up ↗
N8TG NY 1999 · Look up ↗
N900EL UT 2000 · Look up ↗
N90VJ PA 2002 · Look up ↗
N91DP OH 1993 · Look up ↗
N929JH FL 1997 · Look up ↗
N931ED DE 1996 · Look up ↗
N931RS MO 1999 · Look up ↗
N977JP TX 1997 · Look up ↗
N980BG IL 1996 · Look up ↗
N989CG OH 1998 · Look up ↗
N99AT DE 2000 · Look up ↗

Source — FAA Aircraft Registry

Sources