| 2006-10-21 | Engine Components Incorporated (ECi) Reciprocating Engine Connecting Rods | Jun 22, 2006 | Engine (O-360-J2A)Only with: ECi connecting rods P/N AEL11750 (forging P/N AEL11488) installed, rod serial numbers 54/6 and below, produced between January 2002 and January 2004. |
| 2006-06-16 | Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and… | Apr 27, 2006 | Engine (O-360-J2A)Only with: Engines manufactured new or rebuilt, overhauled, or that had a crankshaft installed after March 1, 1999. |
| 2005-19-11 | Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360… | Oct 21, 2005 | Engine (O-360-J2A)Only with: Engines rated at 300 HP or lower, manufactured new, rebuilt, or overhauled after March 1, 1999, or that had a crankshaft installed after March 1, 1999. |
| 2005-16-05 | Robinson Helicopter Company Model R-22 Series Helicopters | Aug 26, 2005 | Airframe (R22)Only with: Modified with a door assembly manufactured by Tech-Tool Plastics, Inc., in accordance with STC No. SR09189RC. |
| 2004-19-09 | Robinson Helicopter Company Model R22-Series Helicopters | Oct 7, 2004 | Airframe (R22)Only with: Main rotor blade P/N A016-1 or A016-2 installed. |
| 2003-04-04 | Robinson Helicopter Company Model R22 Helicopters | Mar 26, 2003 | Airframe (R22)Certain serial numbers: R22 …–3328. Only with: Pitch control assembly P/N A031-1, Revision J or prior, installed; serial numbers 3167, 3326, and 3327 excluded. |
| 2000-20-51 | Robinson Helicopter Company Model R22 Helicopters | Nov 22, 2000 | Airframe (R22)Only with: Yoke half assembly (yoke) P/N A203-5 installed. |
| 2000-08-09 | Robinson Helicopter Company Model R22 Helicopters | May 5, 2000 | Airframe (R22)Certain serial numbers: R22 0002–2862. Only with: Sprag clutch P/N A188-2, S/N 3708 through 3757, 3808 through 3893, or 3908 through 4207 inclusive, installed. |
| 99-07-17 | Robinson Helicopter Company Model R22 Helicopters | Apr 28, 1999 | Airframe (R22)Certain serial numbers: R22 0002–2862. Only with: With sprag clutch P/N A188-2, S/N 3708 through 3757, 3808 through 3893, and 3908 through 4207, installed. |
| 99-02-02 | Robinson Helicopter Company (RHC) Model R22 Helicopters | Feb 1, 1999 | Airframe (R22)Only with: Forward flexplate P/N A947-1, revisions A through D, or P/N A193-1 installed. |
| 98-21-09 | Robinson Helicopter Company Model R22 Helicopters | Dec 9, 1998 | Airframe (R22)Certain serial numbers: R22 0002–1451 |
| 97-25-05 | Robinson Helicopter Company Model R22 Helicopters | Jan 12, 1998 | Airframe (R22)Certain serial numbers: R22 2571–2664 |