| 2012-16-14 | Honeywell International Inc. Turbofan Engines | Oct 1, 2012 | Engine (TFE731-20AR)Serial numbers per Table 4 of Honeywell Service Bulletin TFE731-72-5221, Revision 0. Only with: Engines listed in Table 4 of the SB, or with LPT2 rotor assembly P/N 3060608-2, -3, or -5 that had LPT2 rotor blades P/N 3075424-2 replaced between March 2009 and September 2010, or P/N 3075424-3 replaced between July 2010 and September 2010. |
| 2012-08-08 | Periodic Inspections | May 29, 2012 | Airframe (45) |
| 2011-25-03 | Landing Gear | Jan 23, 2012 | Airframe (45) |
| 2011-13-10 | Learjet Inc. Model 45 Airplanes | Aug 1, 2011 | Airframe (45)Certain serial numbers: 45 45-005–45-405; 45 45-2001–45-2126 |
| 2011-04-08 | Learjet Inc. Model 45 Airplanes | Mar 31, 2011 | Airframe (45)Certain serial numbers: 45 45-2001–45-2114; 45 45-2116–45-2120; 45 45-2122; 45 45-2125; 45 45-2126; 45 45-005–45-380; … |
| 2010-21-19 | Learjet Inc. Model 45 Airplanes | Nov 18, 2010 | Airframe (45)Serial numbers per Bombardier Service Bulletins 40-26-05 and 45-26-9, both Revision 2, dated May 4, 2009 |
| 2010-06-13 | Learjet Inc. Model 45 Airplanes | Apr 1, 2010 | Airframe (45)Certain serial numbers: 45 45-005–45-380; 45 45-2001–45-2111 |
| 2009-24-22 | Learjet Inc. Model 45 Airplanes | Jan 8, 2010 | Airframe (45)Certain serial numbers: 45 45-005–45-321; 45 45-323–45-332; 45 45-2001–45-2075 |
| 2008-01-03 | Learjet Model 45 Airplanes | Feb 14, 2008 | Airframe (45)Certain serial numbers: 45 45-002–45-302; 45 45-2001–45-2049 |
| 2007-17-17 | Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes, and Model… | Oct 2, 2007 | Airframe (45)Serial numbers per Table 1 of this AD: Bombardier Service Bulletins 31-54-2 Rev 1 and 45-54-3 Rev 2; Learjet Service Bulletins 35/36-54-3 and 55-54-3 |
| 2007-09-03 | Learjet Model 45 Airplanes | May 11, 2007 | Airframe (45)Certain serial numbers: 45 45-005–45-321. Only with: Equipped with an auxiliary power unit (APU). |
| 2006-10-15 | Learjet Model 45 Airplanes | May 31, 2006 | Airframe (45)Certain serial numbers: 45 45-005–45-295; 45 45-2001–45-2044 |
| 2005-24-13 | Learjet Model 45 Airplanes | Dec 20, 2005 | Airframe (45)Certain serial numbers: 45 45-005–45-273; 45 45-2001–45-2029 |
| 2005-13-07 | Honeywell International Inc. (Formerly AlliedSignal Inc. and Garrett Turbine Engine Co.)… | Jul 27, 2005 | Engine (TFE731-20AR)Serial numbers per Tables 1, 2, and 3 of Honeywell International Inc. SB No. TFE731-72-3682, dated November 26, 2002. Only with: Engines with LP 1st and 2nd stage turbine rotor discs P/Ns 3072069, 3073014, 3072070, 3073113, 3072351, 3071114, 3072542, 3074103, 3073013, 3074105 (all dash numbers) initially installed as new parts before April 1, 1991. |
| 2005-05-15 | Honeywell International Inc. TFE731-2 and -3 Series Turbofan Engines | Apr 18, 2005 | Engine (TFE731-20AR)Only with: LPT stage 1 disks P/Ns 3072070-All, 3072351-All, 3073013-All, 3073113-All, 3073497-All, and 3074103-All installed. |
| 2003-17-08 | Learjet Model 45 Airplanes | Sep 24, 2003 | Airframe (45)Certain serial numbers: 45 45-005–45-071; 45 45-072–45-114. Only with: S/Ns 45-005 through 45-071 only if modified per Bombardier Service Bulletin 45-32-3. |
| 2003-16-19 | Learjet Model 45 Airplanes | Aug 13, 2003 | Airframe (45) |
| 2003-16-09 | Learjet Model 45 Airplanes | Aug 27, 2003 | Airframe (45)Certain serial numbers: 45 45-005–45-208; 45 45-210–45-222; 45 45-224; 45 45-225; 45 45-227; 45 45-229–45-231 |
| 2003-06-51 | Learjet Model 45 Airplanes | Apr 28, 2003 | Airframe (45)Certain serial numbers: 45 45-001–45-232 |
| 2002-17-01 | Learjet Model 45 Airplanes | Sep 12, 2002 | Airframe (45)Certain serial numbers: 45 45-005–45-213 |
| 2001-03-05 | Learjet Model 45 Airplanes | Feb 20, 2001 | Airframe (45)Certain serial numbers: 45 45-002–45-004; 45 45-006–45-121; 45 45-124–45-129 |
| 2000-08-13 | Learjet Model 45 Airplanes | May 15, 2000 | Airframe (45)Only with: Crane Hydro-Aire brake control unit P/N 42-933-2 installed. |