| 2009-12-01 | Bell Helicopter Textron, Inc. Model 47, 47B, 47B3, 47D, 47D1, 47E, 47G, 47G-2, 47G-2A… | Jun 29, 2009 | Airframe (47G-3B-1)Only with: Main rotor blade installed: P/N 047-110-250-021 with S/N A-303, A-304, A-312, or A-316; or P/N 047-110-250-023 with S/N A-298, A-301, or A-305. |
| 2006-16-04 | Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division… | Sep 7, 2006 | Engine (250-C20) |
| 2006-13-06 | Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division… | Jul 26, 2006 | Engine (250-C20)Only with: Engines with gas producer rotor assembly tie bolt P/Ns A23008020, E23008020 (EXTEX), 23008020, 6843388, 6876991 (RRC), A23008020 (SAP), or 23008020P (Pacific Sky Supply) installed. |
| 2005-10-13 | Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E… | Jun 22, 2005 | Engine (250-C20)Only with: Engines that do not have turbine energy absorbing ring RRC P/N 23035175, or an equivalent FAA-approved serviceable ring, installed. |
| 2001-17-17 | Bell Helicopter Textron, Inc. Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2, 47G2A, 47G-2A-1… | Aug 29, 2001 | Airframe (47G-3B-1)Only with: Main rotor blade grips P/N 47-120-135-2, 47-120-135-3, 47-120-135-5, 47-120-252-1, 47-120-252-7, 47-120-252-11, 74-120-252-11, 74-120-135-5, R47-120-252-11, or R47-120-135-5 installed. |