| 2021-19-08 | Robinson Helicopter Company Helicopters | Sep 22, 2021 | Airframe (R44 II)Only with: Tail rotor blade P/N C029-3 with S/N 9410 through 9909 inclusive installed. |
| 2020-18-08 | Robinson Helicopter Company | Aug 27, 2020 | Airframe (R44 II)Only with: Orange silicone engine air induction hose P/N A785-31 installed; does not apply to helicopters with black neoprene hose P/N A785-31 installed. |
| 2020-08-10 | Robinson Helicopter Company Helicopters | May 22, 2020 | Airframe (R44 II)Only with: Tail rotor blade P/N C029-1 or C029-2 installed. |
| 2020-05-11 | Robinson Helicopter Company Helicopters | Apr 16, 2020 | Airframe (R44 II)Only with: Agricultural spray system (Simplex Model 244) installed by STC SR00286BO with spray system serial numbers 0045 through 0178 inclusive. |
| 2016-26-04 | Robinson Helicopter Company Helicopters | Feb 8, 2017 | Airframe (R44 II)Only with: R44/R44 II with main rotor blade P/N C016-7 Revision AA through AE installed; R66 with main rotor blade P/N F016-2 Revision A through E installed. |
| 2013-05-15 | Robinson Helicopter Company Helicopters | Apr 30, 2013 | Airframe (R44 II)Only with: Emergency floats equipped with inflation valve assembly P/N D757-1 not engraved with "D758-4" or modified with modification B900-8, and containing housing assembly P/N D758-1 Revision C or prior. |
| 2011-12-10 | Robinson Helicopter Company Model (Robinson) R22, R22 Alpha, R22 Beta, R22 Mariner, R44… | Jul 5, 2011 | Airframe (R44 II)Only with: R22 models with main rotor blade P/N A016-4 installed; R44 models with main rotor blade P/N C016-2 or C016-5 installed. |
| 2010-24-03 | Robinson Helicopter Company (Robinson) Model R22, R22 Alpha, R22 Beta, and R22 Mariner… | Dec 29, 2010 | Airframe (R44 II)Certain serial numbers: R22 0002–3325; R22 Alpha 0002–3325; R22 Beta 0002–3325; R22 Mariner 0002–3325; R44 0001–1200; R44 II 0001–1200. Only with: Helicopters with more than 2,200 hours total time-in-service. |
| 2007-11-01 | Robinson Helicopter Company Model R44 and R44 II Helicopters | Jun 27, 2007 | Airframe (R44 II)Certain serial numbers: R44 …–1576; R44 II …–11107. Only with: Seat belt buckle assembly P/N C628-4, revision M or prior, installed. |