Learjet 23 Airworthiness Directives

Every AD in the library whose text names the Learjet 23, of which 5 are registered in the US.

28 not superseded, 1 of them with a repeat action. 29 listed in all, newest published February 28, 2017.

Published sinceHide 1 supersededOnly repeat actions28 of 29

2005-16-09Requires an inspection of the flappers and flapper assemblies of the tip tank in each wing or a review of the airplane maintenance records to determine the part numbers, and replacement of certain flappers or flapper...Learjet Model 23, 24, 25, 35, and 36 Airplanes · AirplaneSupersedes 95-25-03Repeat actionAug 9, 2005
2017-04-15Requires a one-time inspection of the center ball of the aileron control cables for a defective swage, and corrective actions if necessaryFlight controls · AirplaneFeb 28, 2017
2007-04-18Requires modifying the left- and right-hand standby fuel pump switchesLearjet 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 · AirplaneFeb 16, 2007
2005-23-06Requires removing the thrust reverser accumulator, and making the thrust reverser hydraulic system and the thrust reversers inoperableLearjet 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 · AirplaneNov 14, 2005
2005-23-03Requires replacement of the spherical accumulator for the main hydraulic system with a new cylindrical accumulatorLearjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B, 25C, 25D, and 25F Airplanes · AirplaneNov 14, 2005
2005-13-36Requires a one-time inspection of the center ball of the aileron control cable or cables for a defective swage, and corrective actions if necessaryLearjet 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 · AirplaneJul 5, 2005
2001-07-11Learjet Model 23, 24, 25, 28, 29, 31, 35, 36, and 55 Series AirplanesAirplaneApr 16, 2001
99-16-03Requires a one-time detailed visual inspection of the electrical wire leads of the horizontal stabilizer anti-ice system to verify that the numbers on the wire leads correctly correspond to the numbers on the...Learjet Model 23, 24, 25, 28, 29, 31, 55, and 60 Series Airplanes · AirplaneAug 2, 1999
92-19-12Learjet Inc. AirplanesAirplaneNov 17, 1992
86-05-05 R1Learjet Inc. AirplanesAirplaneJan 19, 1988
86-22-05Learjet Inc. AirplanesAirplaneNov 10, 1986
82-01-05 R2Learjet Inc. AirplanesAirplaneApr 10, 1986
80-19-11 R1Learjet Inc. AirplanesAirplaneMay 20, 1985
81-13-07Learjet Inc. AirplanesAirplaneJun 25, 1981
80-26-02Learjet Inc. AirplanesAirplaneJan 15, 1981
80-19-09 R1Learjet Inc. AirplanesAirplaneDec 11, 1980
80-07-09Learjet Inc. AirplanesAirplaneMay 1, 1980
78-16-03Learjet Inc. AirplanesAirplaneAug 17, 1978
77-19-02Learjet Inc. AirplanesAirplaneJul 20, 1978
75-15-06Learjet Inc. AirplanesAirplaneJul 25, 1975
74-23-01Learjet Inc. AirplanesAirplaneNov 5, 1974
72-05-01Learjet Inc. AirplanesAirplaneFeb 29, 1972
71-16-04Learjet Inc. AirplanesAirplaneAug 3, 1971
69-15-06Learjet Inc. AirplanesAirplaneAug 15, 1969
66-14-02Learjet Inc. AirplanesAirplaneJun 1, 1966
66-13-04Learjet Inc. AirplanesAirplaneMay 17, 1966
65-26-03Learjet Inc. AirplanesAirplane1965
65-26-02Learjet Inc. AirplanesAirplane1965

Listed by the model designations in each AD's text. An AD written for a part number, or for "all" engines of a maker, may name no model and so not appear here: search the library for the part or the maker as well.