LEARJET INC 25D

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered LEARJET INC 25D aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving LEARJET INC 25D aircraft

No NTSB-recorded events match LEARJET INC 25D in the indexed corpus.

03 /  Airworthiness Directives

FAA directives applicable to LEARJET INC 25D

10 directive(s) on file. Showing the most recent 10.

• 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…

  Atlas AD → Federal Register ↗

• 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…

  Atlas AD → Federal Register ↗

• 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…

  Atlas AD → Federal Register ↗

• Nov 14, 2005

  Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, and 25F 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, and 25F airplanes. This AD requires replacement of the spherical accumulator for the main hydraulic system with a new cylindrical accumulator. For certain…

  Atlas AD → Federal Register ↗

• Nov 14, 2005

  Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24D, 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, and 25F Airplanes Modified by Supplemental Type Certificate SA1731SW, SA1669SW, or SA1670SW

  The FAA is adopting a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24D, 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, and 25F airplanes. This AD requires removing the thrust reverser accumulator, and making the thrust reverser hydraulic system and the thrust reversers inoperable. This…

  Atlas AD → Federal Register ↗

• Aug 23, 2005

  Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, and 25F 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, and 25F airplanes. This proposed AD would require replacement of the spherical accumulator for the main hydraulic system with a new cylindrical accum…

  Atlas AD → Federal Register ↗

• 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…

  Atlas AD → Federal Register ↗

• Apr 14, 2005

  Airworthiness Directives; Learjet Model 23, 24, 24A, 24B, 24B-A, 24D, 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, and 25F Airplanes Modified by Supplemental Type Certificate SA1731SW, SA1669SW, or SA1670SW

  The FAA proposes to adopt a new airworthiness directive (AD) for certain Learjet Model 23, 24, 24A, 24B, 24B-A, 24D, 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, and 25F airplanes. This proposed AD would require removing the thrust reverser accumulator, and making the thrust reverser hydraulic system and the thrust revers…

  Atlas AD → Federal Register ↗

• 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…

  Atlas AD → Federal Register ↗

• 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…

  Atlas AD → Federal Register ↗

04 /  Type Certificate Data Sheets

FAA TCDS for LEARJET INC 25D

The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.

• A10CE Historical Rev 64 · 12/28/2010

  Learjet Inc.

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

  Atlas TCDS → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for LEARJET INC 25D

239 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

• 03/06/2026

  STC SA2622NM

  Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101)

  Precise Flight Inc.

  Atlas STC → DRS ↗

• 09/26/2025

  STC ST03885AT

  Installation of an Avionica, Inc. avCM Cellular Module

  Aircraft Systems and Manufacturing Inc.

  Atlas STC → DRS ↗

• 09/15/2025

  STC ST12087CH

  Installation replacement Cabin/Cockpit Handheld Fire Extinguishers

  Avcon Industries Inc.

  Atlas STC → DRS ↗

• 04/09/2025

  STC ST02416SE

  Installation of the replacement rate gyro, Butler National Part Number 501-1169-01 MOD A or 501-1169-02 MOD A

  Symetric Industries, DBA Extant Aerospace

  Atlas STC → DRS ↗

• 04/09/2025

  STC ST02097SE

  Installation of replacement circuit boards for the FC-110 autopilot

  Symetric Industries, DBA Extant Aerospace

  Atlas STC → DRS ↗

• 04/09/2025

  STC ST02417SE

  Installation of the replacement stall warning vertical accelerometer, Butler National Part Number 02904001-101

  Symetric Industries, DBA Extant Aerospace

  Atlas STC → DRS ↗

• 03/24/2025

  STC ST02472AT

  Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII

  Aircraft Systems and Manufacturing Inc.

  Atlas STC → DRS ↗

• 03/24/2025

  STC ST03885AT

  Installation of an Avionica, Inc. avCM Cellular Module

  Aircraft Systems and Manufacturing Inc.

  Atlas STC → DRS ↗

• 02/27/2025

  STC ST00738WI

  Increased service life. Data required.

  Phoenix Air Group Inc.

  Atlas STC → DRS ↗

• 08/27/2024

  STC ST01936WI

  Installation of LED lights

  AeroLED's Holdings LLC

  Atlas STC → DRS ↗

• 07/27/2024

  STC ST01138DE

  Installation of MidContinent MD23 standby altimeter and/or attitude indicators

  Butler National Corporation

  Atlas STC → DRS ↗

• 07/02/2024

  STC ST01138DE

  Installation of MidContinent MD23 standby altimeter and/or attitude indicators

  Cert Works LLC

  Atlas STC → DRS ↗

• 05/30/2024

  STC ST04728NY

  Installation of LAI CoolView Cabin Window

  Lee Aerospace Inc.

  Atlas STC → DRS ↗

• 05/29/2024

  STC ST00738WI

  Increased service life. Data required.

  Phoenix Air Group Inc.

  Atlas STC → DRS ↗

• 05/29/2024

  STC ST00814WI

  Landing Gear Life Extension.

  Phoenix Air Group Inc.

  Atlas STC → DRS ↗

• 05/29/2024

  STC ST00999WI

  Installation of Special Mission Power and Control Wiring, provisions for Carriage of Mission Stores with Hardpoints installed by STC SA1604SO or SA1670CE, and Takeoff weight increa…

  Phoenix Air Group Inc.

  Atlas STC → DRS ↗

• 05/13/2024

  STC ST03424CH

  Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders

  CMD Flight Solutions LLC

  Atlas STC → DRS ↗

• 12/05/2023

  STC ST04575AT

  Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering

  Chippewa Aerospace Inc.

  Atlas STC → DRS ↗

• 11/22/2023

  STC ST03885AT

  Installation of an Avionica, Inc. avCM Cellular Module

  Archeion Holdings LLC

  Atlas STC → DRS ↗

• 06/09/2023

  STC ST02472AT

  Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII

  Archeion Holdings LLC

  Atlas STC → DRS ↗

• 06/09/2023

  STC ST02472AT

  Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII

  Archeion Holdings LLC

  Atlas STC → DRS ↗

• 03/01/2023

  STC ST01682WI

  Installation of Heads Up Technologies (HUT) Cabin Entertainment System (CES)

  Heads Up Technologies Inc.

  Atlas STC → DRS ↗

• 02/22/2023

  STC ST00098IB

  Introduction of ADS-B Out

  STC Twenty One Limited

  Atlas STC → DRS ↗

• 12/02/2022

  STC ST02004WI

  Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI)

  Peregrine

  Atlas STC → DRS ↗

• 09/21/2022

  STC ST00814WI

  Landing Gear Life Extension.

  Vertex Aerospace LLC

  Atlas STC → DRS ↗

• 09/21/2022

  STC ST00738WI

  Increased service life. Data required.

  Vertex Aerospace LLC

  Atlas STC → DRS ↗

• 09/21/2022

  STC ST00999WI

  Installation of Special Mission Power and Control Wiring, provisions for Carriage of Mission Stores with Hardpoints installed by STC SA1604SO or SA1670CE, and Takeoff weight increa…

  Vertex Aerospace LLC

  Atlas STC → DRS ↗

• 07/22/2022

  STC ST02893AT

  Installation of a Boom Beam Taxi/Landing Light System

  Whelen Aerospace Technologies

  Atlas STC → DRS ↗

• 06/22/2022

  STC ST02893AT

  Installation of a Boom Beam Taxi/Landing Light System

  Whelen Aerospace Technologies

  Atlas STC → DRS ↗

• 02/17/2022

  STC ST03885AT

  Installation of an Avionica, Inc. avCM Cellular Module

  Archeion Holdings LLC

  Atlas STC → DRS ↗

+ 209 more STCs on file

07 /  PMA replacement parts

FAA-approved replacement parts for LEARJET INC 25D

15 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.

• 60405#https://drs.faa.gov/browse/excelExternalWindow/2333698F3BC0C35C862576C50058B843.0001##

  Cargo Restraint System

  Avcon Industries Inc replaces Modification Part

  PMA holder →

• 35001-068#https://drs.faa.gov/browse/excelExternalWindow/97AE8EA7363150C486257C9400674AD3.0001##

  Skin

  Waypoint Aeronautical replaces 35001-068

  PMA holder →

• 35001-067#https://drs.faa.gov/browse/excelExternalWindow/DDD175917872B67186257C9400674A8B.0001##

  Skin

  Waypoint Aeronautical replaces 35001-067

  PMA holder →

• 35001-066#https://drs.faa.gov/browse/excelExternalWindow/B180AE68A39BCB2C86257C9400674A43.0001##

  Skin

  Waypoint Aeronautical replaces 35001-066

  PMA holder →

• 35001-065#https://drs.faa.gov/browse/excelExternalWindow/F2DE627500BC115086257C94006749FF.0001##

  Skin

  Waypoint Aeronautical replaces 35001-065

  PMA holder →

• 35001-040#https://drs.faa.gov/browse/excelExternalWindow/83EB43551D94FEB386257C94006749BA.0001##

  Skin

  Waypoint Aeronautical replaces 35001-040

  PMA holder →

• 35001-039#https://drs.faa.gov/browse/excelExternalWindow/721851B6AE2C876186257C9400674972.0001##

  Skin

  Waypoint Aeronautical replaces 35001-039

  PMA holder →

• 35001-038#https://drs.faa.gov/browse/excelExternalWindow/92195715B2E4714586257C940067492C.0001##

  Skin

  Waypoint Aeronautical replaces 35001-038

  PMA holder →

• 35001-037#https://drs.faa.gov/browse/excelExternalWindow/49D0F9A761E4888686257C94006748E7.0001##

  Skin

  Waypoint Aeronautical replaces 35001-037

  PMA holder →

• AG844000-23#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113381563120220809102536.0001##

  Gasket – UHF/VHF Antenna

  Aviation Devices & Electronic Components LLC (Av-DEC) replaces Modification Article

  PMA holder →

• AG844000-15#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170561690420220408135755.0001##

  Gasket – UHF/VHF Antenna

  Aviation Devices & Electronic Components, LLC replaces Modification Article

  PMA holder →

• AG728000-52#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169881027220220408135718.0001##

  Gasket – Satcom Antenna

  Aviation Devices & Electronic Components, LLC replaces Modification Article

  PMA holder →

• AG627000-23#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199458991220220408135653.0001##

  Gasket – Marker Beacon

  Aviation Devices & Electronic Components, LLC replaces Modification Article

  PMA holder →

• 1737760-12 Dwg No 1737760-12, Rev E, dtd 4/9/90 or later FAA approval#https://drs.faa.gov/browse/excelExternalWindow/2837B87AEAA2D90F86257870004CDED8.0001##

  Fuel Filter

  Purolator Facet Inc (formerly Facet Filter Products) replaces Learjet P/N 6600488-1

  PMA holder →

• 213526#https://drs.faa.gov/browse/excelExternalWindow/B061E043D76B36C3862573CC005993F7.0001##

  SYNCHRONIZER KITS

  Woodward Inc replaces -

  PMA holder →

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for LEARJET INC 25D

05 /  Aircraft of this type

All 1 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

05 /  Sources & Methodology

Every count traces back to a primary US-government source

• FAA Aircraft Registry →

  Refreshed Apr 27, 2026

  Available

• NTSB CAROL →

  Refreshed Apr 27, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed Apr 27, 2026

  Available

We render counts and lists as the agency publishes them. Read the methodology →