| 2017-19-01 | Sikorsky Aircraft Corporation Helicopters | Jan 2, 2018 | Airframe (S-76C)Certain serial numbers: …–761075. Only with: Main rotor servo pushrod assembly P/N 76400-00034-059, 76400-00014-074, 76400-00014-076, or 76400-00014-077 installed. |
| 2016-25-13 | Safran Helicopter Engines, S.A. (Formerly Turbomeca S.A.) Turboshaft Engines | Feb 3, 2017 | Engine (ARRIEL 2S1)Only with: Engine accessory gearbox (AGB) P/N 0292120650 with a machined front casing installed. |
| 2016-03-02 | Turbomeca S.A. Turboshaft Engines | Mar 15, 2016 | Engine (ARRIEL 2S1)Only with: Engines with modification TU34 or TU34A installed. |
| 2015-26-10 | Sikorsky Aircraft Corporation Helicopters | Feb 9, 2016 | Airframe (S-76C)Only with: Main gearbox P/N 76351-09000 series, 76351-09500 series, or 76351-09600 series installed that has been repaired in accordance with Sikorsky ORI No. 76350-065 (original or Revision A). |
| 2015-19-51 | Sikorsky Aircraft Corporation Helicopters | Nov 10, 2015 | Airframe (S-76C)Only with: Main rotor servo input control pushrod assembly P/N 76400-00034-059 or tail rotor pushrod assembly P/N 76400-00014-071 installed. |
| 2015-13-04 | Turbomeca S.A. Turboshaft Engines | Sep 1, 2015 | Engine (ARRIEL 2S1) |
| 2014-12-05 | Turbomeca S.A. Turboshaft Engines | Aug 4, 2014 | Engine (ARRIEL 2S1) |
| 2013-22-15 | Sikorsky Aircraft Corporation (Sikorsky) Helicopters | Dec 13, 2013 | Airframe (S-76C)Certain serial numbers: …–760822. Only with: With spindle cuff assembly P/N 76102-08001-043, -045 or -046, or blade fold cuff assembly P/N 76150-09601-041 installed. |
| 2012-22-13 | Sikorsky Aircraft Corporation Helicopters | Dec 20, 2012 | Airframe (S-76C)Certain serial numbers: S-76C 760506; S-76C 760607–760812 |
| 2010-26-09 | Sikorsky Aircraft Corporation (Sikorsky) Model S76A, B, and C Helicopters | Jan 12, 2011 | Airframe (S-76C)Only with: LITEF LCR-100 Attitude Heading and Reference System (AHRS) Unit P/N 145130-7100 installed |
| 2010-10-02 | Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters | Jun 17, 2010 | Airframe (S-76C)Only with: Main rotor servo actuator Sikorsky P/N 76650-09805-109 or -110 (also marked HR Textron or Woodward HRT P/N 3006760-109 or -110) installed. |
| 2010-06-08 | Sikorsky Aircraft Corporation Model S-76C Helicopters | Apr 1, 2010 | Airframe (S-76C)Certain serial numbers: S-76C 760501; S-76C 760506–760761. Only with: With Option Code 88051 Flotation System installed by Keystone Helicopter Corporation. |
| 2010-04-07 | Turbomeca Arriel 2S1 Turboshaft Engines | Mar 23, 2010 | Engine (ARRIEL 2S1)Only with: Engines that have not incorporated Modification TU 109. |
| 2007-24-10 | Turbomeca Arriel 2S1 and 2S2 Turboshaft Engines | Dec 14, 2007 | Engine (ARRIEL 2S1)Only with: Engines with a hydro mechanical unit (HMU) installed that was manufactured, or repaired/overhauled, before December 8, 2006. |
| 2005-22-01 | Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters | Nov 10, 2005 | Airframe (S-76C)Only with: Main rotor hub pilot fitting P/N 76103-08003-101 with 1500 or more hours TIS installed. |
| 2003-04-15 | Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters | Feb 27, 2003 | Airframe (S-76C) |
| 2002-15-51 | Sikorsky Aircraft Corporation Model S76A, B, and C Helicopters | Oct 18, 2002 | Airframe (S-76C) |
| 2001-25-06 | Sikorsky Aircraft Corporation Model S-76B and S-76C Helicopters | Jan 4, 2002 | Airframe (S-76C)Certain serial numbers: S-76B 760430; S-76B 760441–760445; S-76B 760448–760452; S-76B 760454; S-76B 760455; S-76B 760458; … |
| 2001-10-06 | Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters | May 17, 2001 | Airframe (S-76C)Only with: Main rotor shaft assembly P/N 76351-09030 (all dash numbers) installed. |
| 2001-01-04 | Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters | Feb 2, 2001 | Airframe (S-76C)Certain serial numbers: …–760513. Only with: Positioning rod assembly P/N 1945E-31A or 2071-31, or side brace rod end P/N 1945E-235 or 2071-235, installed. |
| 2000-11-52 | Sikorsky Aircraft Corporation Model S-76 Series Helicopters | Aug 31, 2000 | Airframe (S-76C) |
| 99-19-30 | Sikorsky Aircraft Corp. Model S76A, B, and C Helicopters | Oct 4, 1999 | Airframe (S-76C) |
| 99-07-01 | Sikorsky Aircraft Corporation (Sikorsky) Model S-76C Helicopters | Apr 7, 1999 | Airframe (S-76C)Only with: Turbomeca Arriel 2S1 engines with HMU P/N 0.292.92.822.0, 0.292.92.808.0, 0.292.92.813.0, or 0.292.92.828.0 installed. |
| 99-01-09 | Sikorsky Aircraft Corporation Model S- 76C Helicopters | Mar 3, 1999 | Airframe (S-76C)Certain serial numbers: S-76C 760477; S-76C 760479; S-76C 760481–760487; S-76C 760490; S-76C 760491; S-76C 760493 |