| 2021-22-11 | MD Helicopters Inc. (MDHI) Helicopters | Jan 10, 2022 | Airframe (369HS)Only with: Pilot-to-copilot tail rotor torque tube P/N 369H7531-9, -11, or -13 installed. |
| 2020-18-20 | MD Helicopters Inc. (MDHI), Helicopters | Oct 28, 2020 | Airframe (369HS)Only with: With MR blade P/N 500P2100-105, 500P2100-305, 500P2300-505, 369D21120-505, 369D21121-505, or 369D21123-505 having a 1.25 inch chord nickel abrasion strip manufactured or installed by HTC or of unknown manufacturer, with less than 700 hours TIS on the abrasion strip. |
| 2019-05-04 | MD Helicopters, Inc. (MDHI), Helicopters | Apr 17, 2019 | Airframe (369HS)Only with: Main rotor blade P/N 369A1100, 369D21100, 369D21102, 369D21120, 369D21121, 369D21123, 500P2100, or 500P2300, all dash numbers, installed. |
| 2016-04-15 | MD Helicopters Inc., Helicopters | Mar 31, 2016 | Airframe (369HS)Only with: Aerometals main rotor blade attach pin P/N 369X1004-5 installed. |
| 2013-19-24 | MD Helicopters, Inc., Helicopters | Dec 5, 2013 | Airframe (369HS)Only with: Tail rotor blade P/N 369D21640-501, -503, 369D21641-501, -503, 369D21642-501, -503, 369D21643-501, -503, or Helicopter Technology Company blade P/N 500P3100-101, 500P3100-301, 500P3300-501, or 500P3500-701 installed. |