| 2007-17-17 | Learjet Model 31, 31A, 35, 35A (C-21A), 36, 36A, 55, 55B, and 55C Airplanes, and Model… | Oct 2, 2007 | Airframe (31A)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 |
| 2005-13-36 | Learjet Model 23, 24, 24A, 24B, 24B-A, 24C, 24D, 24D-A, 24E, 24F, 24F-A, 25, 25A, 25B… | Aug 9, 2005 | Airframe (31A)Serial numbers per Bombardier Alert Service Bulletins A23/24/25-27-17, A28/29-27-24, A31-27-25, A35/36-27-42 (Table 1 of this AD) |
| 2005-13-07 | Honeywell International Inc. (Formerly AlliedSignal Inc. and Garrett Turbine Engine Co.)… | Jul 27, 2005 | Engine (TFE731-2-3B)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 (TFE731-2-3B)Only with: LPT stage 1 disks P/Ns 3072070-All, 3072351-All, 3073013-All, 3073113-All, 3073497-All, and 3074103-All installed. |
| 2001-07-11 | Learjet Model 23, 24, 25, 28, 29, 31, 35, 36, and 55 Series Airplanes | May 1, 2001 | Airframe (31A) |