SIKORSKY S-76

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered SIKORSKY S-76 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving SIKORSKY S-76 aircraft

4 event(s) on file. Showing the most recent 4.

• Jul 21, 1997

  N919SF

  BUTTONWILLOW, California

  NTSB Docket →

• Oct 31, 1992

  N919SF

  GONZALES, California Minor

  NTSB Docket →

• Jan 25, 1975

  N919SF

  ARROYO GRANDE, California

  NTSB Docket →

• Jan 1, 1972

  N919SF

  CHULA VISTA, California

  NTSB Docket →

03 /  Airworthiness Directives

FAA directives applicable to SIKORSKY S-76

28 directive(s) on file. Showing the most recent 25 · 3 more in the Federal Register.

• Jun 22, 2023

  Airworthiness Directives; Various Helicopters

  The FAA is superseding Airworthiness Directive (AD) 2021-23- 13, which applied to all helicopters equipped with a radio (also known as radar) altimeter. AD 2021-23-13 required revising the limitations section of the existing rotorcraft flight manual (RFM) for your helicopter to incorporate limitations prohibiting cert…

  Atlas AD → Federal Register ↗

• Feb 22, 2021

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters Modified by Supplemental Type Certificate SR09211RC

  The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to adopt a new airworthiness directive (AD) that would have applied to all Sikorsky Aircraft Corporation (Sikorsky) S-76 model helicopters with a certain life raft deployment system (LRDS) installed per Supplemental Type Certificate (STC) SR09…

  Atlas AD → Federal Register ↗

• Oct 4, 2019

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  The FAA is superseding Airworthiness Directive (AD) 2018-10-07 for Sikorsky Aircraft Corporation (Sikorsky) Model S-76C helicopters. AD 2018-10-07 required inspecting the engine collective position transducer (CPT). This new AD retains the requirements of AD 2018-10-07 and expands the applicability. This AD is prompte…

  Atlas AD → Federal Register ↗

• May 23, 2019

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We propose to supersede Airworthiness Directive (AD) 2018-10- 07, which applies to Sikorsky Aircraft Corporation (Sikorsky) Model S- 76C helicopters. AD 2018-10-07 requires inspecting the engine collective position transducer (CPT). Since we issued AD 2018-10-07, we determined that an additional part-numbered engine C…

  Atlas AD → Federal Register ↗

• Apr 24, 2019

  Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units

  We are adopting a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This AD requires removing certain LCR-100 AHRS units from service. This AD was prompted by test results showing loss of or invalid data. The actio…

  Atlas AD → Federal Register ↗

• May 21, 2018

  Airworthiness Directives; Sikorsky Aircraft Corporation

  We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76C helicopters. This AD requires inspecting the engine collective position transducer (CPT). This AD was prompted by reports of wear of the CPT that has resulted in several One Engine Inoperative (OEI) incidents. T…

  Atlas AD → Federal Register ↗

• Nov 28, 2017

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, S-76C, and S-76D helicopters. This AD requires inspecting the main rotor (M/R) servo pushrod (pushrod) assembly and applying slippage marks. This AD was prompted by an accident of a Sikorsky Model S-76C…

  Atlas AD → Federal Register ↗

• Sep 14, 2017

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We propose to adopt a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76C helicopters. This proposed AD would require inspecting the engine collective position transducer (CPT). This proposed AD is prompted by reports of wear of the CPT that has resulted in several One Engine Inop…

  Atlas AD → Federal Register ↗

• Jun 5, 2017

  Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units

  We propose to adopt a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This proposed AD would require removing certain LCR-100 AHRS units from service. This proposed AD is prompted by test results showing loss of…

  Atlas AD → Federal Register ↗

• Jun 5, 2017

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We propose to adopt a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, S-76C, and S-76D helicopters. This proposed AD would require inspecting the main rotor (M/R) servo pushrod (pushrod) assembly and applying slippage marks. This proposed AD is prompted by an accident…

  Atlas AD → Federal Register ↗

• Jan 5, 2016

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We are adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, and S-76C helicopters. This AD requires inspecting the main gearbox (MGB) lower housing jet bores for leaks, paint or caulk blistering, and liner protrusion. This AD was prompted by several repor…

  Atlas AD → Federal Register ↗

• Jun 2, 2014

  Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

  We propose to adopt a new airworthiness directive (AD) for Sikorsky Model S-76A, S-76B, and S-76C helicopters with a main gearbox (MGB) installed that has undergone certain repairs. This proposed AD would require inspecting the MGB lower housing jet bores for leaks, paint or caulk blistering, and liner protrusion. Thi…

  Atlas AD → Federal Register ↗

• Apr 28, 2014

  Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

  We are superseding Airworthiness Directive (AD) 2005-22-01 for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters. AD 5002-22-01 required inspecting the main rotor lower bifilar arm assembly (bifilar arm assembly) for a crack, and if there is a crack, replacing the bifilar arm assembly. AD 2005…

  Atlas AD → Federal Register ↗

• Nov 8, 2013

  Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

  We are adopting a new airworthiness directive (AD) for Sikorsky Model S-76A, B, and C helicopters to require certain inspections of each spindle cuff assembly or blade fold cuff assembly for a crack. If there is a crack, this AD requires replacing the cracked part. If there is no crack, this AD requires applying white…

  Atlas AD → Federal Register ↗

• Jul 23, 2013

  Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

  We propose to supersede an existing airworthiness directive (AD) for Sikorsky Model S-76A, B, and C helicopters. The existing AD currently requires inspecting the main rotor lower bifilar arm assembly (bifilar arm assembly) for a crack, and if there is a crack, replacing the bifilar arm assembly. The AD also requires…

  Atlas AD → Federal Register ↗

• Jun 20, 2013

  Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model Helicopters

  We propose to adopt a new airworthiness directive (AD) for Sikorsky Model S-76A, B, and C helicopters to require certain inspections of each spindle cuff assembly or blade fold cuff assembly for a crack. If there is a crack, this proposed AD would require replacing the cracked part. If there is no crack, this AD would…

  Atlas AD → Federal Register ↗

• Mar 1, 2011

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters Modified by Supplemental Type Certificate SR09211RC

  We propose to adopt a new airworthiness directive (AD) for all Sikorsky Aircraft Corporation (Sikorsky) S-76 model helicopters with a certain life raft deployment system (LRDS) installed per Supplemental Type Certificate (STC) SR09211RC. This proposed AD would require removing and replacing the pilot or co-pilot life…

  Atlas AD → Federal Register ↗

• Sep 13, 2010

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters

  We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, and S-76C helicopters. This AD requires an initial and recurring inspections of the tail rotor vertical stabilizer aft spar assembly (aft spar assembly) for a crack, loose or working fasteners, and corro…

  Atlas AD → Federal Register ↗

• May 13, 2010

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters

  This amendment adopts a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters that requires inspecting each installed Woodward HRT (formerly HR Textron) main rotor servo actuator (servo actuator) for a high rate of leakage and replacing each affected servo actu…

  Atlas AD → Federal Register ↗

• Feb 11, 2009

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters

  This document revises an earlier proposed airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S- 76A, B, and C helicopters. That AD proposed to require inspecting each installed HR Textron main rotor servo actuator (servo actuator) for a high rate of leakage and for contaminated hydraulic f…

  Atlas AD → Federal Register ↗

• Jun 4, 2008

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, and S-76C helicopters. The AD would require an initial and recurring inspections of the tail rotor vertical stabilizer aft spar assembly (aft spar assembly) for a crack, loose or working…

  Atlas AD → Federal Register ↗

• May 31, 2007

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters

  This amendment adopts a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters. This action requires a one-time ultrasonic inspection of the main rotor shaft assembly (M/R shaft) for cracking. This amendment is prompted by the discovery of cracking that occurred…

  Atlas AD → Federal Register ↗

• May 2, 2006

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76A, B, and C Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters. The AD would require inspecting all installed HR Textron main rotor servo actuators (servo actuators) for a high rate of leakage and also inspecting for contaminated hydrau…

  Atlas AD → Federal Register ↗

• Mar 31, 2004

  Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76 A, B, and C Helicopters

  This amendment adopts a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76 A, B, and C helicopters with dual channel autopilot and dual inverters installed. This action requires a test to determine if the No. 1 inverter is wired to the DC essential bus, and if so, it requires modi…

  Atlas AD → Federal Register ↗

• Aug 8, 2003

  Airworthiness Directives; Turbomeca Arriel 1 Series Turboshaft Engines

  This amendment supersedes an existing airworthiness directive (AD) that applies to Turbomeca Arriel 1A, 1 A1, 1 A2, 1 B, 1 C, 1 C1, 1 C2, 1 D, and 1 D1 turboshaft engines. That AD currently requires repetitive checks for engine rubbing noise during gas generator rundown following engine shutdown, and for free rotation…

  Atlas AD → Federal Register ↗

05 /  Special Airworthiness Information Bulletins

Advisories applicable to SIKORSKY S-76

1 SAIB on file. SAIBs are FAA advisory notices — not mandatory like ADs, but worth reviewing for service bulletins and emerging issues.

• 12/16/2005

  SAIB SW-06-15

  SAIB SW-06-15 —

  Read → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for SIKORSKY S-76

16 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

• 06/04/2009

  STC SR02446NY-D

  Installation of Replacement LED External Lights

  Keystone Helicopter Corp.

  Atlas STC → DRS ↗

• 05/21/2009

  STC SR02581NY-D

  Installation of Northern Airborne Technologies (NAT) NPX138N FM Transceiver.

  Keystone Helicopter Corp.

  Atlas STC → DRS ↗

• 05/20/2009

  STC SR02580NY-D

  Installation of Keystone Helicopter Corp. ELTA ADT 406 AF Emergency Locator Transmitter.

  Keystone Helicopter Corp.

  Atlas STC → DRS ↗

• 05/21/2008

  STC SR02446NY-D

  Installation of Replacement LED External Lights

  Keystone Helicopter Corp.

  Atlas STC → DRS ↗

• 08/09/2007

  STC SR03333AT

  Installation of the SkyConnect Satellite Phone and automated position reporting system including the installation of an Iridium Satellite antenna, Transceiver, aircraft GPS interfa…

  Icarus Instruments

  Atlas STC → DRS ↗

• 10/20/2006

  STC SR03333AT

  Installation of the SkyConnect Satellite Phone and automated position reporting system including the installation of an Iridium Satellite antenna, Transceiver, aircraft GPS interfa…

  Icarus Instruments

  Atlas STC → DRS ↗

• 01/24/2005

  STC SA2693NM

  Installation of Electronics International digital volt/amp gauges and accessories.

  Electronics International Inc.

  Atlas STC → DRS ↗

• 09/16/2002

  STC SR01127NY-D

  Installation of a Keystone Medical Interior.

  Keystone Helicopter Corp

  Atlas STC → DRS ↗

• 09/13/2002

  STC SR01126NY-D

  Installation of a Garmin GPS500.

  Keystone Helicopter Corp

  Atlas STC → DRS ↗

• 05/20/2002

  STC SR01122NY-D

  Installation of an Avionics Innovations Digital Media Player Model DMP-100.

  Avionics Innovations

  Atlas STC → DRS ↗

• 04/02/2002

  STC SR01120NY-D

  Installation of a Wescam 12DS200 Imaging System.

  Keystone Helicopter Corp

  Atlas STC → DRS ↗

• 05/14/2001

  STC SR01348NY

  Installation of boarding steps IAW Key Tech Engineering Services Installation Drawing List IDL00203, Rev B, dated 1/16/01.

  Keystone Helicopter Corp

  Atlas STC → DRS ↗

• 12/04/2000

  STC SR01141NY

  Installation of Wire Strike Protection System (WSPS).

  Bristol Aerospace Ltd

  Atlas STC → DRS ↗

• 08/21/2000

  STC SR01112NY

  Installation of Keystone Helicopter cabin door pop-out window.

  Keystone Helicopter Corp

  Atlas STC → DRS ↗

• 08/16/1995

  STC SR00091LA

  Installation of an RG-380/40B battery.

  Concorde Battery Corporation

  Atlas STC → DRS ↗

• 01/26/1988

  STC SA2693NM

  Installation of Electronics International digital volt/amp gauges and accessories.

  Electronics International

  Atlas STC → DRS ↗

07 /  PMA replacement parts

FAA-approved replacement parts for SIKORSKY S-76

26 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.

• 1117105-01#https://drs.faa.gov/browse/excelExternalWindow/3F409A4DBF4895FD86257DFD0070274D.0001##

  Restraint System

  Meggitt Safety Systems Inc replaces 1117105-01

  PMA holder →

• 1106142-01#https://drs.faa.gov/browse/excelExternalWindow/8D0FCC9495F7DA9C86257DFD0070274B.0001##

  Restraint System

  Meggitt Safety Systems Inc replaces 1106142-01

  PMA holder →

• 1117105-03#https://drs.faa.gov/browse/excelExternalWindow/715A9D3C781E001786257DFD0070274E.0001##

  Restraint System

  Meggitt Safety Systems Inc replaces 1117105-03

  PMA holder →

• 1106142-03#https://drs.faa.gov/browse/excelExternalWindow/F2D909EC8B14625E86257DFD0070274C.0001##

  Restraint System

  Meggitt Safety Systems Inc replaces 1106142-03

  PMA holder →

• ACA902F815#https://drs.faa.gov/browse/excelExternalWindow/B5503FDC2CDD288386257A010056FF92.0001##

  Filter Element

  Pall Aeropower Corporation replaces 0711311-861

  PMA holder →

• ADA1941Y1#https://drs.faa.gov/browse/excelExternalWindow/38FD5564547B75FB86257A010056FF91.0001##

  Lube Filter

  Pall Aeropower Corporation replaces 76351-09083-102

  PMA holder →

• ADB25810#https://drs.faa.gov/browse/excelExternalWindow/B565B4FDA24B302386257A010056FF6B.0001##

  Lube Oil Filter Assembly

  Pall Aeropower Corporation replaces ADB25810

  PMA holder →

• RG-380E/40B#https://drs.faa.gov/browse/excelExternalWindow/C6B060B91F00C9B18525703F004DD030.0001##

  Battery

  Concorde Battery Corp replaces Modification Part

  PMA holder →

• 07600002-5#https://drs.faa.gov/browse/excelExternalWindow/161B577F89358733862578960072641B.0001##

  UNDER FUSELAGE & ROTOR DISC LIGHT'S INST'L [KIT]

  Devore Aviation Corp of America replaces Modification Part

  PMA holder →

• 07600002-5#https://drs.faa.gov/browse/excelExternalWindow/9535FD34DF6BA2918625782300508278.0001##

  UNDER FUSELAGE & ROTOR DISC LIGHTS INST'L [KIT]

  Devore Aviation Corp of America replaces Modification Part

  PMA holder →

• D-7T#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID798199493202106071448390.0001##

  Contactor-2 SPST 1NO-1NC

  Hartman Electrical Mfg replaces D-7T

  PMA holder →

• RG380E/40#https://drs.faa.gov/browse/excelExternalWindow/A417A45383857E448525703F004DD146.0001##

  Battery

  Concorde Battery Corp replaces Modification Part

  PMA holder →

• 06076A10A013#https://drs.faa.gov/browse/excelExternalWindow/F8110A6776F6FE9F862572ED004D6341.0001##

  Cabin FLIR Monitor, Bracket Assembly

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A10A010#https://drs.faa.gov/browse/excelExternalWindow/BB35C8027BF93A2F862572ED004D630C.0001##

  FLIR Monitor Assy, Cabin

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A10A020#https://drs.faa.gov/browse/excelExternalWindow/76FC15F861D91B3E862572ED004D6368.0001##

  FLIR Gimbal Assy

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A10A101#https://drs.faa.gov/browse/excelExternalWindow/699985DF92AB3496862572ED004D63AA.0001##

  FLIR Collar Mod

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A50A102#https://drs.faa.gov/browse/excelExternalWindow/66E656844F136CB2862572ED004D63E9.0001##

  Back Plate, FLIR CEU Rack

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A80A100#https://drs.faa.gov/browse/excelExternalWindow/62D001F86C6D24B5862572ED004D6400.0001##

  Placards

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A50A020#https://drs.faa.gov/browse/excelExternalWindow/33B6A045969E27F0862572ED004D63C5.0001##

  FLIR CEU Rack Modification

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A10A100#https://drs.faa.gov/browse/excelExternalWindow/25601D7F1A6A13B0862572ED004D6388.0001##

  FLIR Monitor Components

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 06076A10A011#https://drs.faa.gov/browse/excelExternalWindow/1DA7D426187C5F42862572ED004D6327.0001##

  Cabin FLIR Monitor, Support Assembly

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 08076A20E100#https://drs.faa.gov/browse/excelExternalWindow/9A3E6F7521DB0D2686257552006EC05A.0001##

  30-2351 Light Dam

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 56776-64893#https://drs.faa.gov/browse/excelExternalWindow/11CE49ECE8BB36B286257552006EC0AE.0001##

  Rotor Tip Light

  Sikorsky Global Helicopters replaces Modification Part

  PMA holder →

• 1211206-013#https://drs.faa.gov/browse/excelExternalWindow/64486DF475BFB4CC8625728A00510528.0001##

  Pedal Damper/ Trim Actuator

  Arkwin Industires Inc replaces 76900-01810-110

  PMA holder →

• 1211206-019#https://drs.faa.gov/browse/excelExternalWindow/7E65268F02E5D36986257689006E0842.0001##

  Pedal Damper/Trim Actuator

  Arkwin Industires Inc replaces Sikorsky P/N 76900-01810-116

  PMA holder →

• 9750W0538#https://drs.faa.gov/browse/excelExternalWindow/0F669128083B2005862570670060CF94.0001##

  Sealed Lead-Acid Battery, 24V/40Ah

  EnerSys Energy Products Inc replaces Concorde RG380E/40B

  PMA holder →

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for SIKORSKY S-76

05 /  Aircraft of this type

All 4 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

05 /  Sources & Methodology

Every count traces back to a primary US-government source

• FAA Aircraft Registry →

  Refreshed Apr 27, 2026

  Available

• NTSB CAROL →

  Refreshed Apr 27, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed Apr 27, 2026

  Available

We render counts and lists as the agency publishes them. Read the methodology →