# Sikorsky S-76A

- Type: Aircraft model (FAA registry)
- Registry code: 8143006
- Manufacturer (registry): SIKORSKY
- Model: S-76A
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 2 · Turbo-shaft
- Seats: 14
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS H1NE](https://openairdocs.org/tcds/H1NE) (OpenAirDocs)
- Holder: Sikorsky Aircraft Corporation
- Registered aircraft: 19
- Page: https://openairdocs.org/model/sikorsky-s-76a

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024
- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023
- [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022
- [AD 2017-19-01](https://openairdocs.org/ad/2017-19-01): Rotorcraft Flight Control · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Jan 2, 2018
- [AD 2015-26-10](https://openairdocs.org/ad/2015-26-10): Main Rotor Gearbox · Sikorsky S-76A, S-76B and S-76C. Effective Feb 9, 2016
- [AD 2015-19-51](https://openairdocs.org/ad/2015-19-51): Flight Control System · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Nov 10, 2015
- [AD 2015-04-05](https://openairdocs.org/ad/2015-04-05): Tail Rotor Drive Shaft · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Mar 12, 2015
- [AD 2014-08-06](https://openairdocs.org/ad/2014-08-06): Main Rotor Head · Sikorsky S-76A, S-76B and S-76C. Effective Jun 2, 2014
- [AD 2013-22-15](https://openairdocs.org/ad/2013-22-15): Main Rotor Head · Sikorsky S-76A, S-76B and S-76C. Effective Dec 13, 2013
- [AD 2013-06-51](https://openairdocs.org/ad/2013-06-51): Equipment/Furnishings · Agusta A109, A109A, A109A II and 43 more. Effective Jul 15, 2013
- [AD 2012-15-08](https://openairdocs.org/ad/2012-15-08): Main Rotor Brake · Sikorsky S-76A. Effective Sep 21, 2012
- [AD 2010-26-09](https://openairdocs.org/ad/2010-26-09): Navigation · Sikorsky S-76A, S-76B and S-76C. Effective Jan 12, 2011
- [AD 2010-17-16](https://openairdocs.org/ad/2010-17-16): Vertical Stabilizer · Sikorsky S-76A, S-76B and S-76C. Effective Oct 18, 2010
- [AD 2010-10-02](https://openairdocs.org/ad/2010-10-02): Servo actuator · Sikorsky S-76A, S-76B and S-76C. Effective Jun 17, 2010
- [AD 2010-07-02](https://openairdocs.org/ad/2010-07-02): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 26 more. Effective May 3, 2010
- [AD 2007-11-05](https://openairdocs.org/ad/2007-11-05): Main rotor shaft assembly (M/R shaft) · Sikorsky S-76A, S-76B and S-76C. Effective Jun 15, 2007
- [AD 2004-06-04](https://openairdocs.org/ad/2004-06-04): Dual channel autopilot and dual inverters · Sikorsky S-76A, S-76B and S-76C. Effective Apr 15, 2004
- [AD 2003-14-18](https://openairdocs.org/ad/2003-14-18): Main landing gear brake discs (discs) · Sikorsky S-76A, S-76B and S-76C. Effective Aug 25, 2003
- [AD 2003-04-15](https://openairdocs.org/ad/2003-04-15): Rotor Brake Disc (RBD) · Sikorsky S-76A, S-76B and S-76C. Effective Feb 27, 2003
- [AD 2002-21-07](https://openairdocs.org/ad/2002-21-07): Main rotor spindle attachment bolt · Sikorsky S-76A, S-76B and S-76C. Effective Nov 25, 2002
- [AD 2002-15-51](https://openairdocs.org/ad/2002-15-51): Main rotor blade · Sikorsky S-76A, S-76B and S-76C. Effective Oct 18, 2002
- [AD 2002-05-06](https://openairdocs.org/ad/2002-05-06): Main and Nose Landing Gear Parts · Sikorsky S-76A. Effective Apr 22, 2002
- [AD 2001-22-14](https://openairdocs.org/ad/2001-22-14): Fire Extinguishing System Bottle Cartridges · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 105 more. Effective Dec 10, 2001
- [AD 2001-10-06](https://openairdocs.org/ad/2001-10-06): Main Rotor Shaft Assembly · Sikorsky S-76A, S-76B and S-76C. Effective Jun 21, 2001
- [AD 94-14-20 R1](https://openairdocs.org/ad/94-14-20-R1): Tail Rotor Blade Spar Elliptical Centering Plug · Sikorsky S-76A. Effective Jun 8, 2001
- [AD 2001-01-04](https://openairdocs.org/ad/2001-01-04): Rod Assembly · Sikorsky S-76A, S-76B and S-76C. Effective Feb 2, 2001
- [AD 2000-11-52](https://openairdocs.org/ad/2000-11-52): Main Rotor Blade · Sikorsky S-76A, S-76B and S-76C. Effective Aug 31, 2000
- [AD 2000-12-09](https://openairdocs.org/ad/2000-12-09): Air Conditioning System · Sikorsky S-76A. Effective Jul 28, 2000
- [AD 99-19-30](https://openairdocs.org/ad/99-19-30): Tail Gearbox Forward Fairing · Sikorsky S-76A, S-76B and S-76C. Effective Oct 4, 1999
- [AD 99-11-04](https://openairdocs.org/ad/99-11-04): Rotorcraft Flight Manual - Landing Gross Weights and Climb · Sikorsky S-76A with STC SH568NE. Effective Jul 9, 1999
- [AD 98-17-15](https://openairdocs.org/ad/98-17-15): Swashplate Assembly Uniball Bearing Retainer Inspection · Sikorsky S-76A, S-76B and S-76C. Effective Feb 1, 1999
- [AD 95-22-01](https://openairdocs.org/ad/95-22-01): Fluorescent Lighting System · Aerospace Lighting Fluorescent lighting systems, A310-203, A310-204 and 74 more. Effective Dec 4, 1995
- [AD 91-24-13](https://openairdocs.org/ad/91-24-13): Vertical Pylon Forward Spar Cap and Web · Sikorsky S-76A. Effective Dec 20, 1991
- [AD 91-08-03](https://openairdocs.org/ad/91-08-03): Forward Spar Cap · Sikorsky S-76A. Effective May 3, 1991
- [AD 89-07-12](https://openairdocs.org/ad/89-07-12): Tail Rotor Horn · Sikorsky S-76A and S-76B. Effective Apr 27, 1989
- [AD 87-23-07 R1](https://openairdocs.org/ad/87-23-07-R1): Electrical Door Locking Actuators · Sikorsky S-76A and S-76B. Effective Jan 11, 1989
- [AD 87-25-02](https://openairdocs.org/ad/87-25-02): Ground Connections · Sikorsky S-76A and S-76B. Effective Dec 31, 1987
- [AD 87-12-06](https://openairdocs.org/ad/87-12-06): Generator Control Unit · Sikorsky S-76A and S-76B. Effective Jun 10, 1987
- [AD 86-19-14](https://openairdocs.org/ad/86-19-14): Tail Rotor Assembly · Sikorsky S-76A and S-76B. Effective Jan 30, 1987
- [AD 82-25-01 R1](https://openairdocs.org/ad/82-25-01-R1): Right and Left Main Landing Gear Positioning Rod Ends · Sikorsky S-76A. Effective Dec 1, 1986
- [AD 86-14-07](https://openairdocs.org/ad/86-14-07): Push Rod Assembly · Sikorsky S-76A and S-76B. Effective Oct 20, 1986
- [AD 85-07-03 R1](https://openairdocs.org/ad/85-07-03-R1): Instrument Landing System · Sperry digital automatic flight control system, single and two… (American Eurocopter STC SH2215NM or 2 others). Effective Sep 14, 1986
- [AD 85-15-06](https://openairdocs.org/ad/85-15-06): Tail Rotor Drive Shaft Bearings · Sikorsky S-76A. Effective Nov 25, 1985
- [AD 84-19-51 R1](https://openairdocs.org/ad/84-19-51-R1): Center Firewall Supports · Sikorsky S-76A. Effective Mar 7, 1985
- [AD 84-17-01](https://openairdocs.org/ad/84-17-01): Main Rotor Pitch Horn · Sikorsky S-76A. Effective Jan 10, 1985
- [AD 84-15-04](https://openairdocs.org/ad/84-15-04): Tail Rotor Controls · Sikorsky S-76A. Effective Aug 3, 1984
- [AD 84-10-02](https://openairdocs.org/ad/84-10-02): Main Rotor Blade Spar · Sikorsky S-76A. Effective Jun 18, 1984
- [AD 84-08-01](https://openairdocs.org/ad/84-08-01): Shaft Bearing Assembly · Sikorsky S-76A. Effective Apr 24, 1984
- [AD 82-17-03](https://openairdocs.org/ad/82-17-03): Rotor Brake Assembly · Sikorsky S-76A. Effective Aug 23, 1982
- [AD 82-06-51](https://openairdocs.org/ad/82-06-51): Main Gearbox Shaft And Spur Pinions · Sikorsky S-76A. Effective Jun 3, 1982

Historical (superseded or no longer in force):

- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021
- [AD 2010-11-52](https://openairdocs.org/ad/2010-11-52) (historical): Navigation system · Sikorsky S-76A, S-76B and S-76C
- [AD 2006-22-05](https://openairdocs.org/ad/2006-22-05) (historical): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 27 more. Effective Dec 1, 2006
- [AD 2005-22-01](https://openairdocs.org/ad/2005-22-01) (historical): Main rotor lower bifilar arm assembly · Sikorsky S-76A, S-76B and S-76C. Effective Nov 10, 2005

All 62: https://openairdocs.org/model/sikorsky-s-76a/ads.md

## Information bulletins (advisory) (2)

- [SAIB AIR-20-11](https://openairdocs.org/saib/AIR-20-11): Attitude and Direction Data System, Incorrect AHRS Yaw Rate Output. Issued Jun 22, 2020
- [SAIB SW-08-37](https://openairdocs.org/saib/SW-08-37): Inoperative Cyclic Control Stick Guard. Issued Jul 22, 2008

## Registered aircraft (19)

- [N276TC](https://openairdocs.org/aircraft/N276TC): [N276tc LLC](https://openairdocs.org/faa-owner/N276TC%20LLC), [Chino, CA](https://openairdocs.org/faa-place/CA/Chino), built 1980, S/N 760061
- [N282S](https://openairdocs.org/aircraft/N282S): [Arrow Aviation Company LLC](https://openairdocs.org/faa-owner/ARROW%20AVIATION%20COMPANY%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1985, S/N 760282
- [N5294A](https://openairdocs.org/aircraft/N5294A): [Arrow Aviation Co LLC](https://openairdocs.org/faa-owner/ARROW%20AVIATION%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), S/N 760364
- [N5415X](https://openairdocs.org/aircraft/N5415X): [Connecticut Air And Space Center](https://openairdocs.org/faa-owner/CONNECTICUT%20AIR%20AND%20SPACE%20CENTER), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford), built 1981, S/N 760199
- [N576VP](https://openairdocs.org/aircraft/N576VP): [N576vp LLC](https://openairdocs.org/faa-owner/N576VP%20LLC), [Chino, CA](https://openairdocs.org/faa-place/CA/Chino), built 1980, S/N 760040
- [N60609](https://openairdocs.org/aircraft/N60609): [Turbines Ltd](https://openairdocs.org/faa-owner/TURBINES%20LTD), [West Point, NE](https://openairdocs.org/faa-place/NE/West%20Point), S/N 760077
- [N6061C](https://openairdocs.org/aircraft/N6061C): [Turbines Ltd](https://openairdocs.org/faa-owner/TURBINES%20LTD), [West Point, NE](https://openairdocs.org/faa-place/NE/West%20Point), S/N 760229
- [N644LH](https://openairdocs.org/aircraft/N644LH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), S/N 760170
- [N7266K](https://openairdocs.org/aircraft/N7266K): [Gulf Helicopters LLC](https://openairdocs.org/faa-owner/GULF%20HELICOPTERS%20LLC), [Santa Fe, TX](https://openairdocs.org/faa-place/TX/Santa%20Fe), built 1985, S/N 760283
- [N761MH](https://openairdocs.org/aircraft/N761MH): [Mansfield Heliflight Inc](https://openairdocs.org/faa-owner/MANSFIELD%20HELIFLIGHT%20INC), [Milton, VT](https://openairdocs.org/faa-place/VT/Milton), built 1981, S/N 760232
- [N762MH](https://openairdocs.org/aircraft/N762MH): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), S/N 760233
- [N763MH](https://openairdocs.org/aircraft/N763MH): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), S/N 760230
- [N765MH](https://openairdocs.org/aircraft/N765MH): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1983, S/N 760236
- [N768AL](https://openairdocs.org/aircraft/N768AL): [Sikorsky Aircraft Corp](https://openairdocs.org/faa-owner/SIKORSKY%20AIRCRAFT%20CORP), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford), S/N 760031
- [N768MH](https://openairdocs.org/aircraft/N768MH): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1981, S/N 760189
- [N769MH](https://openairdocs.org/aircraft/N769MH): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), S/N 760278
- [N8063R](https://openairdocs.org/aircraft/N8063R): [Turbines Ltd](https://openairdocs.org/faa-owner/TURBINES%20LTD), [West Point, NE](https://openairdocs.org/faa-place/NE/West%20Point), S/N 760064
- [N80EX](https://openairdocs.org/aircraft/N80EX): [Island Express Holding Corp](https://openairdocs.org/faa-owner/ISLAND%20EXPRESS%20HOLDING%20CORP), [Fillmore, CA](https://openairdocs.org/faa-place/CA/Fillmore), S/N 760258
- [N90EV](https://openairdocs.org/aircraft/N90EV): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 1984, S/N 760264

## NTSB investigations (29)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA18LA053](https://openairdocs.org/ntsb/ERA18LA053), Dec 15, 2017: Sikorsky S76 (N911FK), Islamorada, FL, substantial damage. Probable cause: The pilot's activation of the rotor brake while the No. 2 engine was still set to govern the power turbine speed, which resulted in continuous power being applied to the rotor while the rotor brake…
- [NTSB CEN13FA192](https://openairdocs.org/ntsb/CEN13FA192), Mar 15, 2013: Sikorsky S-76A++ (N574EH), Grand Lake, LA, destroyed, 3 fatal. Probable cause: Fracture of the red tail rotor blade spar, which resulted in the separation and departure of the red tail rotor blade from the helicopter and subsequent compromised tail gearbox. The red tail rotor…
- [NTSB CHI08FA141](https://openairdocs.org/ntsb/CHI08FA141), May 29, 2008: Sikorsky S-76A (N176SH), Grand Rapids, MI, destroyed. Probable cause: The pilot's failure to maintain tail rotor obstacle clearance from a tower during takeoff.
- [NTSB DFW07LA011](https://openairdocs.org/ntsb/DFW07LA011), Oct 22, 2006: Sikorsky S-76A++ (N22342), Eugene Isl 259, destroyed. Probable cause: The flight crew's failure to maintain clearance with the water and their diverted attention to secondary tasks while preparing to land. Contributing factor were the low ceilings and the heavy rains…
- [NTSB DFW06LA093](https://openairdocs.org/ntsb/DFW06LA093), Apr 19, 2006: Sikorsky S-76A (N8063R), Houston, TX, substantial damage. Probable cause: The failure by maintenance personnel to secure the tail rotor driveshaft cowling after performing maintenance which resulted in a loss of tail rotor control. A contributing factor was the pilot's…
- [NTSB DCA04MA030](https://openairdocs.org/ntsb/DCA04MA030), Mar 23, 2004: Sikorsky S76A++ (N579EH), Gulf of Mexico, destroyed, 10 fatal. Probable cause: the flight crew's failure to identify and arrest the helicopter's descent for undetermined reasons, which resulted in controlled flight into terrain.
- [NTSB LAX01FA252](https://openairdocs.org/ntsb/LAX01FA252), Jul 21, 2001: Sikorsky S-76A (N769BB), Los Angeles, CA, substantial damage. Probable cause: The failure of the pilot to reduce the engine power control levers to ground idle prior to leaving the helicopter, resulting in the unmanned helicopter moving on the helipad and performing a dynamic…
- [NTSB FTW01LA176](https://openairdocs.org/ntsb/FTW01LA176), Jul 10, 2001: Sikorsky SK-76A (N164AG), New Iberia, LA, substantial damage. Probable cause: the loss of control while maneuvering for undetermined reasons.
- [NTSB FTW01LA081](https://openairdocs.org/ntsb/FTW01LA081), Mar 20, 2001: Sikorsky SK-76A (N376AL), Ec 270, no damage, 1 fatal. Probable cause: the passenger's inadvertent encounter with the rotating main rotor blades.
- [NTSB NYC99FA140](https://openairdocs.org/ntsb/NYC99FA140), Jun 15, 1999: Sikorsky S-76A (N2743E), Jackson, KY, destroyed, 4 fatal. Probable cause: the failure of the PIC to adequately supervise the SIC, and maintain a positive climb. Factors were the fog and dark night.
- [NTSB FTW97LA356](https://openairdocs.org/ntsb/FTW97LA356), Sep 22, 1997: Sikorsky S-76A (N517AL), Patterson, LA, substantial damage. Probable cause: failure of the copilot to maintain a positive rate of climb after takeoff, which led to an inadvertent descent and collision with a crop of sugar cane and the ground. Factors relating to the accident…
- [NTSB NYC92GA147](https://openairdocs.org/ntsb/NYC92GA147), Aug 7, 1992: Sikorsky S-76A (N50KY), Graefenburg, KY, destroyed. Probable cause: AN INADEQUATE PREFLIGHT INSPECTION BY THE FLIGHT CREW BY FAILING TO ASSURE THAT ALL FOUR OF THE ENGINE COWLING LATCHES WERE PROPERLY SECURED, WHICH RESULTED IN SUBSEQUENT FAILURE OF SECTION II OF THE…
- [NTSB FTW91LA098](https://openairdocs.org/ntsb/FTW91LA098), Jun 17, 1991: Sikorsky S76A (N5418N), Ship Shoal 290k, destroyed. Probable cause: THE COPILOT'S REDUCTION OF POWER TO GROUND IDLE ON BOTH ENGINES. FACTORS WERE THE PILOT'S POOR LANDING TECHNIQUE AND HIS FAILURE TO ESTABLISH ADEQUATE CREW COORDINATION.
- [NTSB NYC89FA106](https://openairdocs.org/ntsb/NYC89FA106), Mar 27, 1989: Sikorsky S-76A (N586C), Manhattan, NY, substantial damage. Probable cause: THE PILOT OF THE OTHER HELICOPTER MISJUDGED CLEARANCE BETWEEN HIS AND THE OTHER HELICOPTER. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE LAYOUT (MARKINGS) OF THE HELIPORT PARKING AREA,…
- [NTSB NYC89FA088](https://openairdocs.org/ntsb/NYC89FA088), Feb 22, 1989: Sikorsky S-76A (N767SA), Washington, PA, substantial damage. Probable cause: THE PILOT'S INADVERTENT VFR FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC) WHICH RESULTED IN HIS LOSS OF AIRCRAFT CONTROL. FACTORS RELATED TO THE ACCIDENT WAS: THE PILOT'S FLIGHT INTO KNOWN…
- [NTSB BFO88LA058](https://openairdocs.org/ntsb/BFO88LA058), Jun 23, 1988: Sikorsky S-76A (N54C), Moundsville, WV, destroyed
- [NTSB FTW88LA082](https://openairdocs.org/ntsb/FTW88LA082), Mar 24, 1988: Sikorsky S-76A (N1547N), Offshore Oil, no damage
- [NTSB FTW87FA059](https://openairdocs.org/ntsb/FTW87FA059), Feb 5, 1987: Sikorsky S-76A (N767AL), Angleton, TX, destroyed, 2 fatal
- [NTSB NYC86IA109](https://openairdocs.org/ntsb/NYC86IA109), Mar 20, 1986: Sikorsky S-76 (N38), Atlantic City, NJ, incident, minor damage
- [NTSB FTW86LA032](https://openairdocs.org/ntsb/FTW86LA032), Jan 5, 1986: Sikorsky S-76A (N7612L), Grand Isle Bl73, substantial damage, 3 fatal
- [NTSB NYC85FA145](https://openairdocs.org/ntsb/NYC85FA145), Jun 11, 1985: Sikorsky S76A (N176FJ), Belmar, NJ, substantial damage, 1 fatal
- [NTSB FTW85LA119](https://openairdocs.org/ntsb/FTW85LA119), Feb 19, 1985: Sikorsky S-76A (N31223), Houma, LA, destroyed
- [NTSB NYC84FA319](https://openairdocs.org/ntsb/NYC84FA319), Sep 22, 1984: Sikorsky S-76A (N79K), Unionville, PA, substantial damage
- [NTSB FTW84FA216](https://openairdocs.org/ntsb/FTW84FA216), May 1, 1984: Sikorsky S-76A (N763AL), High Isl Blk595, substantial damage
- [NTSB CHI83FA428](https://openairdocs.org/ntsb/CHI83FA428), Sep 14, 1983: Sikorsky S-76A (N521AC), Chicago, IL, destroyed
- [NTSB FTW81FA061](https://openairdocs.org/ntsb/FTW81FA061), Mar 31, 1981: Sikorsky S-76 (N765AL), Conroe, TX, destroyed
- [NTSB FTW80FA111](https://openairdocs.org/ntsb/FTW80FA111), Sep 3, 1980: Sikorsky S-76 (N766AL), Patterson, LA, destroyed
- [NTSB FTW80FRD10](https://openairdocs.org/ntsb/FTW80FRD10), Nov 29, 1979: Sikorsky S-76A (N476AL), Intracstl City, LA, substantial damage
- [NTSB MIA78FA109](https://openairdocs.org/ntsb/MIA78FA109), Jul 28, 1978: Sikorsky S76A (N763SA), W Palm Beach, FL, substantial damage

## FAA accident and incident reports (82, newest 50)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20171215023479A](https://openairdocs.org/incident/20171215023479A), Dec 15, 2017: Sikorsky S-76A (N911FK), Islamorada, FL, Substantial damage. An S-76A++ helicopter landed on a 135 helicopter air ambulance flight at an off aiport location. The flight medic and nurse exited the aircraft to respond to…
- [Incident 20140131001079I](https://openairdocs.org/incident/20140131001079I), Jan 31, 2014: Sikorsky S-76A (N80GH), Fort Lauderdale, FL, Minor damage. N80GH was taxiing between two hangar on a taxiway, an other aircraft came on the opposite direction, the pilot in command of N80GH decided to go to the left…
- [Accident 20130315005139A](https://openairdocs.org/incident/20130315005139A), Mar 15, 2013: Sikorsky S-76A (N574EH), Cameron, LA, Destroyed, 3 fatal. Helicopter took off at 1119 from lch for a maintenance check flight. During the flight, the pilot called lch tower and era helicopter communications center to…
- [Incident 20121128025499I](https://openairdocs.org/incident/20121128025499I), Nov 28, 2012: Sikorsky S-76A (N911FK), Tavernier, FL, Minor damage. While hovering on the departure pad, the tail rotor came in contact with tree branches. Crew was unaware of the incident until post flight inspection revealed…
- [Accident 20080529834199A](https://openairdocs.org/incident/20080529834199A), May 29, 2008: Skrsky S76A (N176SH), Grand Rapids, MI, Destroyed. (-23) The airman was receiving his scheduled part 135 checkride from an FAA inspector. A review of the videotape of the accident and witness statements…
- [Accident 20061022021829A](https://openairdocs.org/incident/20061022021829A), Oct 22, 2006: Skrsky S76A (N22342), Houma, LA, Destroyed. (-23) On October 22, 2006 at approximately 0630 LCL, N22342, a Sikorsky SK-76A++ aircraft crashed while approaching a helideck for landing. The prevailing…
- [Accident 20060419004609A](https://openairdocs.org/incident/20060419004609A), Apr 19, 2006: Skrsky S76A (N8063R), Houston, TX, Substantial damage. (-23) On April 19, 2006, a Sikorsky sk 76-A, N8063R, departed on a flight from high island A-139 to west Houston airport (kiws), TX, at approximately 16:52,…
- [Incident 20041222033379I](https://openairdocs.org/incident/20041222033379I), Dec 22, 2004: Skrsky S76A (N574EH), Lake Charles, LA. (-23) Engine had a chip light with T5 temperature indications. Pilot shut down engine and returned to Lake Charles airport.
- [Accident 20040323007699A](https://openairdocs.org/incident/20040323007699A), Mar 23, 2004: Skrsky S76A (N579EH), Galveston, TX, Destroyed, 10 fatal. (-23) The aircraft, chartered by unocal of houston, Texas, departed scholes international airport near Galveston, Texas at approximately 6:45 pm CST. Its…
- [Accident 20010721022359A](https://openairdocs.org/incident/20010721022359A), Jul 21, 2001: Skrsky S76A (N769BB), Losangeles, CA, Substantial damage. (-23) Pilot stated that after deplanning passengers, he was preparing for departure to vny when he noticed the left rear cabin door open light illuminated. He…
- [Accident 20010710038129A](https://openairdocs.org/incident/20010710038129A), Jul 10, 2001: Skrsky S76A (N164AG), Sabine Pass, TX, No damage. (-23) The pilot-in-command stated that the helicopter seemed to have a bit of a ground track problem (rough on the ground at full RPM). He proceeded to Sabine…
- [Accident 20010320004579A](https://openairdocs.org/incident/20010320004579A), Mar 20, 2001: Skrsky S76A (N376AL), No damage, 1 fatal. (-23) While deplaing passengers at an offshore heliport, a waiting passenger entered the heliport area unescorted. The passenger was struck in the head by the…
- [Incident 20000106001109I](https://openairdocs.org/incident/20000106001109I), Jan 6, 2000: Skrsky S76A (N1545K), Galveston, TX, Minor damage. (-23) The pilot-in-command (PIC) made a VFR approach to a helideck located at HI-344A. The approach was terminated at a hover on the north edge of the landing…
- [Accident 19990614007009A](https://openairdocs.org/incident/19990614007009A), Jun 14, 1999: Skrsky S76A (N2743E), Jackson, KY, Destroyed, 4 fatal. (.4)The S-76A departed on a positioning flight with two pilots and two medical personnel onboard. Night instrument meteorological conditions prevailed with…
- [Incident 19980629035139I](https://openairdocs.org/incident/19980629035139I), Jun 29, 1998: Skrsky S76A (N164AG), Lake Charles, LA. (-5)On June 29, 1998, at 0620 local time, a Sikorsky, model S-76A, helicopter, N164AG, operated by air logistics, l.l.c., new iberia, Louisiana, experienced a…
- [Incident 19980424026029I](https://openairdocs.org/incident/19980424026029I), Apr 24, 1998: Skrsky S76A (N710AL), Patterson, LA, Minor damage. Dragging rotor brake.
- [Incident 19980130011159I](https://openairdocs.org/incident/19980130011159I), Jan 30, 1998: Skrsky S76A (N768AL), Gulf Mexico, LA, Minor damage. Narrative: on 30 jan 1998, at 0900 CT, a Sikorsky SK-76-A N768AL, operated by offshore logistics, inc., certificate no. ALGA151C, struck a safety fence with…
- [Accident 19970922027889A](https://openairdocs.org/incident/19970922027889A), Sep 22, 1997: Skrsky S76A (N517AL), Patterson, LA, Substantial damage. On departure, high hover, disappeare in fog, hit ground, over fence into field. (-23) on September 22, 1997, at 0530 central daylight time, a Sikorsky S-76-A…
- [Incident 19960731043039I](https://openairdocs.org/incident/19960731043039I), Jul 31, 1996: Skrsky S76A (N1546G), LA, Minor damage. Narrative: while the pilot was taxiing the helicopter to the takeoff area, the left main landing gear ran off the taxiway, causing damage to the gear. [privacy…
- [Incident 19950801033209I](https://openairdocs.org/incident/19950801033209I), Aug 1, 1995: Skrsky S76A (N1546G), Sabine, TX. NR1 fuel pressure and engine surging. Returned Sabine pass phi. Found defective fuel selector valve. Replaced.
- [Incident 19950608029529I](https://openairdocs.org/incident/19950608029529I), Jun 8, 1995: Skrsky S76A (N1546G), Sabine, TX, No damage. Fuel pressure light NR1 engine and surging. Shutdown. Landed private strip. No defects. Replaced fuel controls.
- [Incident 19950531027259I](https://openairdocs.org/incident/19950531027259I), May 31, 1995: Skrsky S76A (N1546K), Houma, LA. Oil pressure light came on. Low oil pressure smelled oil, shut engine down. Defective oil filter cap.
- [Incident 19950228011059I](https://openairdocs.org/incident/19950228011059I), Feb 28, 1995: Skrsky S76C (N1545K), Venice, LA. Narrative: on short final to a customer's heliport in Venice, Louisiana aircraft N1545K experienced a large torque split which could not be corrected. Just…
- [Incident 19950126006739I](https://openairdocs.org/incident/19950126006739I), Jan 26, 1995: Skrsky S76A (N1545K), New Orleans, LA. Narrative: five minutes after takeoff from the New Orleans airport (msy), at 3,000 feet above ground level, the "baggage smoke detector" light illuminated. The…
- [Incident 19941217047829I](https://openairdocs.org/incident/19941217047829I), Dec 17, 1994: Skrsky S76A (N708AL), Gulf Of Mexico, LA. Offshore takeoff NR2 hydro system light came on. Gear staved down. Returned to platform. Blew gear down.
- [Incident 19941216047759I](https://openairdocs.org/incident/19941216047759I), Dec 16, 1994: Skrsky S76A (N1546G), Sabine, TX. Burning odor. Smoke. Loran failed shortly after. Reset. Water leaked into loran. Shorted control head. Fixed leak.
- [Incident 19931221050919I](https://openairdocs.org/incident/19931221050919I), Dec 21, 1993: Skrsky S76A (N1547N), New Iberia, LA. NR1 engine decelerated to flight idle. Diverted to New Iberia. Suspect moisture in engines governor system.
- [Incident 19930528024659I](https://openairdocs.org/incident/19930528024659I), May 28, 1993: Skrsky S76A (N422AL), Bermuda Dunes, CA, Minor damage. While taxiing out of parking place the rotor blades struck the vertical fin of a parked aircraft.
- [Incident 19930209011769I](https://openairdocs.org/incident/19930209011769I), Feb 9, 1993: Skrsky S76A (N22342), Clute, TX, Minor damage. Experienced sparking at electical wire bundle. Landed on road. Wire bundle chafed with radar unit.
- [Incident 19921230056699I](https://openairdocs.org/incident/19921230056699I), Dec 30, 1992: Skrsky S76A (N376LL), St Paul, MN. Pilot operated aircraft into known icing conditions. Witnessed by four persons. Verified by flight service station.
- [Accident 19920807056889A](https://openairdocs.org/incident/19920807056889A), Aug 7, 1992: Skrsky S76A (N50KY), Frankfort, KY, Destroyed. Indicates unsecured right engine cowl lifted inflight. Hit main rotors debris hit tail rotors. Lost tail rotor use.
- [Incident 19911204058019I](https://openairdocs.org/incident/19911204058019I), Dec 4, 1991: Skrsky S76A (N50KY), Lexington, KY. Cyclic control system problem. Returned. On test flight landed in field. Cable was rubbing on control tube.
- [Incident 19911014054739I](https://openairdocs.org/incident/19911014054739I), Oct 14, 1991: Skrsky S76A (N769AL), Gulf Of Mexcio, LA. NR2 engine oil pressure indicator fell to zero. Shut down. Returned. Found a broken wire at the oil transmitter plug
- [Accident 19910617022219A](https://openairdocs.org/incident/19910617022219A), Jun 17, 1991: Skrsky S76A (N5418N), Ship Shoal 209k, LA, Destroyed. Rotated right on takeoff from hover. SIC pulled engine speed levers. Impacted water.
- [Incident 19910509025569I](https://openairdocs.org/incident/19910509025569I), May 9, 1991: Skrsky S76A (N1547K), Pascagoula, MS. Aircraft vibrating in cruise. Landed without incident. Tip cap on rotor blade had separated.
- [Incident 19910423029339I](https://openairdocs.org/incident/19910423029339I), Apr 23, 1991: Skrsky S76A (N708AL), Grand Chenier, LA, Minor damage. Small hole was found in vertical fin after flight. Caused by applying aft cyclic and lowering collective full down.
- [Incident 19910416059139I](https://openairdocs.org/incident/19910416059139I), Apr 16, 1991: Skrsky S76A (N30DJ), New York, NY. NR2 engine lost power on descent. Emergency landing in water on floats. Removed passengers. Towed to pier.
- [Incident 19910111005839I](https://openairdocs.org/incident/19910111005839I), Jan 11, 1991: Skrsky S76A (N768AL), Patterson, LA. NR1 engine chip detector light on. Engine failed. Vectored for landing. Turbine wheel had burst.
- [Incident 19901212063829I](https://openairdocs.org/incident/19901212063829I), Dec 12, 1990: Skrsky S76A (N768AL), Patterson, LA. NR1 engine power surge. Secured and landed. Governor failed due to bearing failure.
- [Incident 19900820045959I](https://openairdocs.org/incident/19900820045959I), Aug 20, 1990: Skrsky S76A (N712AL), Gulf Of Mexico, TX. NR2 engine spooled down and fuel pressure light on. Landed safely. Loose fuel line fitting at pump.
- [Incident 19900612046039I](https://openairdocs.org/incident/19900612046039I), Jun 12, 1990: Skrsky S76A (N1546K), Amelia, LA, Substantial damage. On engine start helicopter began to spin. Unable to control. Tail rotor sevro rod not connected.
- [Incident 19900531034669I](https://openairdocs.org/incident/19900531034669I), May 31, 1990: Skrsky S76A (N768AL), Gulf Of Mexico, LA. Experienced limitation to left cyclic control travel on approach. Left cyclic control stop was improperly adjusted.
- [Incident 19891228063359I](https://openairdocs.org/incident/19891228063359I), Dec 28, 1989: Skrsky S76A (N7266K), Venice, LA, Minor damage. Hit a taxiway light while repositioning for takeoff. Heavy dew on taxiway.
- [Incident 19891219062619I](https://openairdocs.org/incident/19891219062619I), Dec 19, 1989: Skrsky S76A (N710AL), Gulf Of Mexico, LA. Power lost on NR1 engine. Secured and landed at destination. Allison overspeed control malfunctioned.
- [Incident 19891214062539I](https://openairdocs.org/incident/19891214062539I), Dec 14, 1989: Skrsky S76A (N376AL), Gulf Of Mexico, LA. NR1 engine oil temperature increase. Landed safely. Oil cooler blower had sheared drive shaft.
- [Incident 19891125061879I](https://openairdocs.org/incident/19891125061879I), Nov 25, 1989: Skrsky S76A (N710AL), Gulf Of Mexico, LA. NR2 engine oil temperature increased. Secured and landed. Oil cooler blower had sheared drive shaft.
- [Incident 19890919056799I](https://openairdocs.org/incident/19890919056799I), Sep 19, 1989: Skrsky S76A (N710AL), Lake Charles, LA. Partial power failure of NR2 engine secured engine. Landed safely. Found crack in the pc filter air line.
- [Incident 19890328016689I](https://openairdocs.org/incident/19890328016689I), Mar 28, 1989: Skrsky S76A (N30DJ), New York, NY, Minor damage. Main rotors struck rotor of parked helicopter while taxiing to park.
- [Accident 19890327010022A](https://openairdocs.org/incident/19890327010022A), Mar 27, 1989: Skrsky S76A (N586C), New York, NY, Substantial damage. While parked in wrong parking spot idling was struck by rotors of another S76 that was parking. Spaces not marked.
- [Accident 19890222002369A](https://openairdocs.org/incident/19890222002369A), Feb 22, 1989: Skrsky S76A (N767SA), Washington, PA, Substantial damage. Encountered instrument weather conditions. During attempted turn-around collided with trees and rolled left.

All 82: https://openairdocs.org/model/sikorsky-s-76a/incidents.md

## Service difficulty reports (2,806, newest 50)

As reported by operators and repair stations, by the model named in the report.

- [SDR YTRA202402020001](https://openairdocs.org/sdr/YTRA202402020001), Jan 24, 2024: BLADES. SEPARATED. IN FLIGHT ENGINE SHUTDOWN. ON TEARDOWN INSPECTION IT WAS DISCOVERED THAT THE 1ST STAGE TURBINE WHEEL BLADES HAD SEPARATED FORM THE BODY OF THE WHEEL. SEE BLOCK 
- [SDR YTRA2024012500001](https://openairdocs.org/sdr/YTRA2024012500001), Jan 24, 2024: ENGINE. SHUTDOWN. IN FLIGHT ENGINE SHUTDOWN.
- [SDR YTRA22336101](https://openairdocs.org/sdr/YTRA22336101), Dec 24, 2022: SMOKE DETECTOR. FALSE ACTIVATION. SMOKE DETECTOR WARNING LIGHT FOR THE BAGGAGE COMPARTMENT ILLUMINATED IN FLIGHT. ON INSPECTION BY MAINTENANCE PERSONNEL NO DAMAGE WAS NOTED AND THE CONNECTOR PLU
- [SDR YTRA2021090700001](https://openairdocs.org/sdr/YTRA2021090700001), Sep 4, 2021: INDICATION SYS. READS HIGH. PILOT REPORTED THAT IN CRUISE FLIGHT THE T5 INDICATION HIGHER THAN THE #2 ENGINE AND THE ENGINE FAILED THE TREND CHECK.
- [SDR YTRA202002205101](https://openairdocs.org/sdr/YTRA202002205101), Feb 19, 2020: TUBE. CRACKED. #2 SERVO SYSTEM LIGHT ILLUMINATED IN CRUISE FLIGHT. ON INSPECTION FOUND HYDRAULIC TUBE ASSEMBLY IN THE RIGHT HAND WHEEL WELL CRACKED AND LEAKING.
- [SDR YTRA2019031200071](https://openairdocs.org/sdr/YTRA2019031200071), Mar 12, 2019: KEELBEAM. CORRODED. DURING A VISUAL INSPECTION A CRACK WAS NOTED ON THE KEEL BEAM CONDUIT ON THE LOWER FUSELAGE.
- [SDR YTRA16301](https://openairdocs.org/sdr/YTRA16301), Jun 7, 2017: AMPLIFIER. INOPERATIVE. DURING CRUISE FLIGHT, THE NR 2 ENGINE FIRE LIGHT ILLUMINATED. THERE WERE NO SECONDARY INDICATIONS OF A FIRE IN THE ENGINE COMPARTMENT. ON LANDING, MAINTENANCE F
- [SDR CA160226008](https://openairdocs.org/sdr/CA160226008), Feb 21, 2016: COMBUST CHAMBER. CRACKED. (CAN) COMBUSTION CAN FOUND CRACKED DURING 300 HR ENGINE INSPECTION. CRACK FOUND IN ARMPIT AREA EXTENDING INTO BRAZED PATCH.
- [SDR 3GMA2016012701](https://openairdocs.org/sdr/3GMA2016012701), Jan 27, 2016: UNKNOWN. ODOR. ON CLIMB OUT TO 2500, MEDICAL CREWMEMBER IN RT AFT CREW SEAT, STATED SHE SMELLED FUEL & THAT THE SMELL WAS NOT GOING AWAY. NO OTHER CREW MEMBERS SMELLED FUEL. R
- [SDR YTRA20160105001](https://openairdocs.org/sdr/YTRA20160105001), Dec 31, 2015: WIRE. CHAFED. OBSERVED SMOKE UNDER CO-PILOTS INSTRUMENT PANEL. PERFORMED EMER PROCEDURES CHECKLIST & NOTED THAT THE NR 1 N1 INDICATOR CB HAD POPPED. CONFIRMED THAT THE POPPED
- [SDR CA160105002](https://openairdocs.org/sdr/CA160105002), Dec 27, 2015: SWITCH. FAILED. (CAN) MEDIC`S VHF RADIO STATION AND SAT PHONE REPORTED FOR TEMPORARILY POWER LOSS DURING FLIGHT. DURING MAINTENANCE TROUBLESHOOTING, TESTING OF THE SYSTEMS RESU
- [SDR YTRA2015120734101](https://openairdocs.org/sdr/YTRA2015120734101), Dec 5, 2015: VALVE. FAILED. AIRCRAFT BEGAN PULLING IN PITCH FOR A TAKEOFF & WAS LIGHT ON THE WHEELS WHEN THE NR 1 FUEL PRESS LIGHT ILLUMINATED & THE NR 1 ENG FLAMED OUT. THE ACFT WAS SAFEL
- [SDR YTRA2015120233601](https://openairdocs.org/sdr/YTRA2015120233601), Nov 26, 2015: LINE. LOOSE. IN THE PROCESS OF CONDUCTING AN MOC FLIGHT FOR A FUEL CONTROL SYS ADJUSTMENT, THE PILOT EXPERIENCED AN ENG FLAMEOUT WHILE IN A 5 FT HOVER. LANDED THE ACFT WITHO
- [SDR CA151009004](https://openairdocs.org/sdr/CA151009004), Oct 8, 2015: THROTTLE CABLE. BROKEN. (CAN) ON ATTEMPTING START ON NR 2 ENGINE THE PILOT NOTICED NO T5 RISE. UPON FURTHER INVESTIGATION IT WAS REVEALED THAT WHEN THROTTLE CABLE WAS MOVED THERE WAS N
- [SDR CA151009003](https://openairdocs.org/sdr/CA151009003), Oct 8, 2015: SHAFT. SEIZED. (CAN) WHILE TROUBLESHOOTING, AN UNCOMMANDED TORQUE OSCILLATION IN FLIGHT WHICH WAS DISCOVERED TO BE A TURBINE PROBLEM, THE ANOMALY WITH THE RECENTLY REPLACED GO
- [SDR CA151005009](https://openairdocs.org/sdr/CA151005009), Oct 2, 2015: LINE. COLLAPSED. (CAN) INLET HOSE FOR FUEL, COLLAPSED CAUSING THE NR 1 ENGINE TO FLAMEOUT.
- [SDR YTRA20150618001](https://openairdocs.org/sdr/YTRA20150618001), Jun 17, 2015: RELAY. BURNED OUT. BATTERY OFF CAUTION LIGHT ILLUMINATED AFTER OBSERVING AN ELEC BURNING ODOR. NO OTHER COCKPIT INDICATIONS NOTED. DISCOVERED A BURNT BATTERY RELAY.
- [SDR CA150311005](https://openairdocs.org/sdr/CA150311005), Mar 8, 2015: LINER. DEBONDED. (CAN) DURING TAIL ROTOR DRIVESHAFT BEARING CHANGE. THE BEARING LINERS, WHICH ARE GLUED ONTO THE TAIL ROTOR DRIVESHAFT BECAME DISBANDED.
- [SDR YTRA20150316075](https://openairdocs.org/sdr/YTRA20150316075), Mar 6, 2015: SMOKE DETECTOR. FALSE ACTIVATION. BAGGAGE COMPARTMENT SMOKE DETECTOR CAUTION LIGHT CAME ON IN FLIGHT. ON INSPECTION NO SMOKE OR FIRE WAS NOTED.
- [SDR GHEA2014121700001](https://openairdocs.org/sdr/GHEA2014121700001), Dec 17, 2014: LINE. LEAKING. THE ACFT DEPARTED, THE MASTER CAUTION LIGHT ILLUMINATED. THE HYDRAULIC PRESSURE INDICATED BELOW 2000 PSI. FLIGHT DIVERTED. THE LANDING GEAR WAS EXTENDED BY THE 
- [SDR CA141121006](https://openairdocs.org/sdr/CA141121006), Nov 18, 2014: BLADE. CRACKED. (CAN) SEVERAL CRACKS FOUND AFTER LAST FLIGHT OF THE DAY ON TAIL ROTOR BLADE BOND ASSY 76101-05020-045, PART OF TAIL ROTOR BLADE ASSY 76101-05101-041.
- [SDR CA141028006](https://openairdocs.org/sdr/CA141028006), Oct 26, 2014: BLADE. CRACKED. (CAN) A VISUAL INSPECTION OF THE ROOT END AREA OF THE SPAR WAS CARRIED OUT BEFORE THE RE-INSTALLATION OF THE BLADE DURING MAINTENANCE. A HAIR LINE CRACK WAS DIS
- [SDR CA141020004](https://openairdocs.org/sdr/CA141020004), Oct 18, 2014: GOVERNOR. MALFUNCTIONED. (CAN) IN A DESCENT, TORQUE SPLIT OCCURRED, NR 2 ENGINE LEADING WITH 83 PERCENT, T5 798, N2 106 PERCENT, NR 106. ENGINE NR 1 TQ 20 PERCENT, N1 AND T5 LOW, AS WEL
- [SDR YTRA20140623001](https://openairdocs.org/sdr/YTRA20140623001), Jun 23, 2014: CONTROL VALVE. FAILED. ON DEPARTURE DURING THE TAKEOFF CHECKLIST THE LANDING DID NOT RETRACT. PERFORMED PROCEDURE IN EMER PROCEDURE CHECKLIST. DEVIATED TO PLATFORM DUE TO IFR REQUIREM
- [SDR CA140402011](https://openairdocs.org/sdr/CA140402011), Apr 1, 2014: SHIELD. FAILED. (CAN) DURING APPROACH, THE FLIGHT CREW NOTICED A HIGHER THAN USUAL T5 INDICATION THAT LIMITED THE NR 2 ENGINE TORQUE. THE ACFT LANDED WITHOUT INCIDENT. A 5" X 3
- [SDR ALGA201308017578](https://openairdocs.org/sdr/ALGA201308017578), Jul 31, 2013: SERVO. FLAKING. MAIN ROTOR SERVO HAD THE NR 2 CRANK BOLT INSTALLED LOOSELY. ON DISASSEMBLY OF THE SERVO, PLASMA COATING WAS DISCOVERED IN ALL INTERNAL LOCATIONS.
- [SDR CA130614012](https://openairdocs.org/sdr/CA130614012), Jun 12, 2013: SHAFT. VIBRATION. (CAN) PTO SHAFT, PN: 76361-09103-104, DURING SHAFT REMOVAL FOR NR 2 ENGINE LUBRICATION OF ENGINE OUTPUT FLANGE SPLINES THE SHAFT WAS DISCOVERED SHEARED WHEN THE
- [SDR ALGA052320137420](https://openairdocs.org/sdr/ALGA052320137420), May 21, 2013: LONGERON. CORRODED. LONGERON CORRODED BEYOND LIMITS.
- [SDR ALGA052320137418](https://openairdocs.org/sdr/ALGA052320137418), May 21, 2013: CONDUIT. CORRODED. CORROSSION ON CONDUIT FOUND DURING CLEAN UP.
- [SDR CA130322001](https://openairdocs.org/sdr/CA130322001), Mar 18, 2013: FIRE DETECTOR. FAILED. (CAN) WHILE ENROUTE, WE HEARD NR 2 ENGINE FIRE TONE. THE FIRE CAUTION LIGHT INDICATOR WAS LIT AS WELL. WE THEN PROCEEDED WITH THE IMMEDIATE ACTION PRESCRIBED IN
- [SDR ALGA2012110729109](https://openairdocs.org/sdr/ALGA2012110729109), Nov 5, 2012: CHIN BUBBLE. CRACKED. RIGHT CHIN BUBBLE CRACKED, REMOVED AND REPLACED.
- [SDR ALGA2012110729113](https://openairdocs.org/sdr/ALGA2012110729113), Nov 4, 2012: GOVERNOR. LOOSE. NR 2 ENGINE FAILED POWER CHECK. TIGHTENED NR 2 GOVERNOR AND RESEATED NR 2 HEATER VALVE. SUBSEQUENT POWER CHECK AT +2.
- [SDR CA120823011](https://openairdocs.org/sdr/CA120823011), Aug 15, 2012: HOSE. LEAKING. (CAN) NR 2 SERVO LIGHT "ON", NR 2 HYDRAULIC PRESURE "0" INDICATION WAS NOTICED DURING LANDING. A BURST HYDRAULIC HOSE ASSY, PN:SS48C2C165000 WAS FOUND. REPLACED
- [SDR CA120814007](https://openairdocs.org/sdr/CA120814007), Aug 13, 2012: ENGINE. FLAMED OUT. (CAN) DURING LANDING A LOUD BANG WAS HEARD FOLLOWED BY INDICATION OF THE NR 2 ENGINE OUT LIGHT ILLUMINATION. AIRCRAFT LANDED IN THE WATER AND SHORTLY THERE AFTE
- [SDR CA120822005](https://openairdocs.org/sdr/CA120822005), Aug 10, 2012: LINKAGE. FAILED. (CAN) PILOT REPORTED A SLIGHT JERK 10 MIN BEFORE LANDING ON DECK. AN INSPECTION WAS DONE ON DECK AND REPORTED THE DOOR FITTING BROKEN. ACFT WAS SHUTDOWN, DOOR T
- [SDR AC2A66K07172012](https://openairdocs.org/sdr/AC2A66K07172012), Jul 17, 2012: B-NUT. LOOSE. NR 1 ENGINE FUEL PRESSURE WARNING LIGHT ILLUMINATED IN FLIGHT. FOLLOWED EMERGENCY PROCEDURES CHECKLIST AND RETURNED TO BASE. MX FOUND A LOOSE B-NUT ON PRESSURE 
- [SDR AC2A66K07082012](https://openairdocs.org/sdr/AC2A66K07082012), Jul 8, 2012: WARNING LIGHT. ILLUMINATED. APPROXIMATELY FIVE MINUTES AFTER TAKEOFF, NR 1 FUEL PRESSURE LIGHT ILLUMINATED. RETURNED TO DEPARTURE BASE. SUSPECTED RESTRICTED FUEL FLOW, REPLACED FUEL PUMP, 
- [SDR ALGA2012060802](https://openairdocs.org/sdr/ALGA2012060802), Jun 4, 2012: OIL SYSTEM. LOW PRESSURE. AFTER TAKEOFF, NR 2 ENGINE OIL PRESSURE LIGHT ILLUMINATED WITH CORRESPONDING LOW PRESSURE ON GAUGE. NR 2 CHIP LIGHT ILLUMINATED ON FINAL APPROACH BACK TO PATTER
- [SDR ALGA2012032200012](https://openairdocs.org/sdr/ALGA2012032200012), Mar 22, 2012: PISTON. ERODED. SERVO LOCKED UP FOUR TIMES ON FUNCTIONAL CHECK ON HYD BENCH. FOUND PLASMA COATING BROKE OFF SYS 1 AND 2 PISTONS. PLASMA WAS FOUND IN BOTH SYS BYPASS SPOOL, SLEE
- [SDR ALGA201203220011](https://openairdocs.org/sdr/ALGA201203220011), Mar 22, 2012: PISTON. ERODED. SERVO LOCKED UP 4 TIMES ON FUNCTIONAL CHECK ON HYD BENCH. FOUND PLASMA COATING BROKE OFF SYS 1 AND 2 PISTONS. PLASMA WAS FOUND IN BOTH SYS BYPASS SPOOL, SLEEVES
- [SDR CA120312021](https://openairdocs.org/sdr/CA120312021), Feb 14, 2012: EXCITER. FAILED. (CAN) NR 1 ENGINE START CONTROL CIRCUIT BREAKER POPPED ON START. MAINTENANCE REPLACED THE IGNITION EXCITER BOX.
- [SDR YTRA201203901](https://openairdocs.org/sdr/YTRA201203901), Feb 8, 2012: TIP CAP. DAMAGED. ON PRE-FLIGHT DISCOVERED TIP CAP OF TAIL ROTOR PADDLE MISSING.
- [SDR ALGAR201201300058](https://openairdocs.org/sdr/ALGAR201201300058), Jan 30, 2012: COVER. DEBONDED. FOUND PADDLE "A" TIP WEIGHT COVER DEBONDED AND MOISTURE INGRESS IN WEIGHT POCKET.
- [SDR ALGA2012012372124](https://openairdocs.org/sdr/ALGA2012012372124), Jan 23, 2012: SUPPORT. CORRODED. SUPPORT PITTING CORROSION BEYOND LIMITS.
- [SDR ALGAR5496122711](https://openairdocs.org/sdr/ALGAR5496122711), Dec 27, 2011: SCROLL. CRACKED. CRACKED COMPRESSOR SCROLL.
- [SDR ALGA1062011519AL4](https://openairdocs.org/sdr/ALGA1062011519AL4), Oct 6, 2011: FLOOR PANEL. CORRODED. FOUND CO-PILOTS FLOOR PANEL CORRODED.
- [SDR ALGA1062011519AL3](https://openairdocs.org/sdr/ALGA1062011519AL3), Oct 6, 2011: FLOOR PANEL. CORRODED. FOUND FLOOR PANEL CORRODED.
- [SDR ALGA1062011519AL2](https://openairdocs.org/sdr/ALGA1062011519AL2), Oct 6, 2011: FLOOR PANEL. CORRODED. FOUND FLOOR PANEL CORRODED.
- [SDR ALGA20111006001](https://openairdocs.org/sdr/ALGA20111006001), Oct 6, 2011: FLOOR PANEL. CORRODED. FOUND PILOTS FLOOR PANEL CORRODED, PN 7620402006-048, SN 16100711.
- [SDR ALGA10062011519AL](https://openairdocs.org/sdr/ALGA10062011519AL), Oct 6, 2011: FLOOR PANEL. CORRODED. FOUND FLOOR PANEL CORRODED.

All 2,806: https://openairdocs.org/model/sikorsky-s-76a/reports.md

## STCs that may be installed (OpenAirDocs) (352, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SR04465NY](https://openairdocs.org/stc/SR04465NY): Installation of the iPad Mount. Avio Design Group Inc
- [STC SR02727SE](https://openairdocs.org/stc/SR02727SE): Installation and maintenance of the Sunspot 36 and 46 series lights. Whelen Aerospace Technologies
- [STC SR268CH](https://openairdocs.org/stc/SR268CH): Installation of BFG FlightSystems TCAS I (Model TCAS-791/A). Acron Aviation Inc
- [STC SR00137DE-D](https://openairdocs.org/stc/SR00137DE-D): Installation of a Life Port "PLUS' System Installation; Serial Number 760288. Air Methods LLC
- [STC SR00138DE-D](https://openairdocs.org/stc/SR00138DE-D): Installation of an Air Methods Emergency Medical Accessory Package; Serial Number 760288. Air Methods LLC
- [STC SR00139DE-D](https://openairdocs.org/stc/SR00139DE-D): Installation of an Air Methods Avionics Upgrade Package; Serial Number 760288. Air Methods LLC
- [STC SR01955SE](https://openairdocs.org/stc/SR01955SE): Installation of a Supplemental Lighting System. Aviation Specialties Unlimited Inc
- [STC SR02473AK](https://openairdocs.org/stc/SR02473AK): Installation of the L-3 Communications NGT-9000R/RD and NGT-9000/D ADS-B IN/OUT system. StandardAero Atlantic USA Inc
- [STC SR09011RC](https://openairdocs.org/stc/SR09011RC): Manufacture of an emergency exit window in passenger door. HELIFAB
- [STC SR09211RC](https://openairdocs.org/stc/SR09211RC): Installation of an external mount life raft deployment system. HELIFAB
- [STC SR09355RC](https://openairdocs.org/stc/SR09355RC): Installation of 12 place passenger seats. HELIFAB
- [STC SR01367SE](https://openairdocs.org/stc/SR01367SE): Installation of Rockwell Collins Four Tube FDS 2000 Electronic Flight Instrument System (EFIS) and Rockwell Collins AHC 3000 Attitude Heading Reference System (AHRS). Helifab
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR00112BO](https://openairdocs.org/stc/SR00112BO): Installation of either the OuterLink Corporation CP-2 or CP-3i SATCOM System in accordance with OuterLink Corporation Master Document List No. D000-0042, Revision N, dated August 19, 2009, or later FAA-approved revision. Outerlink Corporation
- [STC SR01520SE](https://openairdocs.org/stc/SR01520SE): Installation of a Modularized Main DC Electrical Junction Box. Helifab
- [STC SR04609NY](https://openairdocs.org/stc/SR04609NY): Installation of Garmin HTAWS (Helicopter Terrain Awareness Warning System). Maxcraft Avionics Ltd
- [STC SR02322AK](https://openairdocs.org/stc/SR02322AK): Installation of a fixed mounted Max-Vis Enhanced Vision System (EVS) Model 1500. PECO Inc
- [STC SR00925DE](https://openairdocs.org/stc/SR00925DE): Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality. Peregrine
- [STC SH2224NM](https://openairdocs.org/stc/SH2224NM): Installation of dual Sperry EDZ-705 Electronic Flight Instrument Systems, (EFIS). Honeywell International Inc
- [STC SH2218NM](https://openairdocs.org/stc/SH2218NM): Installation of Sperry digital automatic flight control systems for one or two pilot IFR/VFR operation. Honeywell International Inc
- [STC SR04440NY](https://openairdocs.org/stc/SR04440NY): Installation of the Mid Continent MD302 Standby Attitude Module. Maxcraft Avionics Ltd
- [STC SR02667SE](https://openairdocs.org/stc/SR02667SE): Installation of a Honeywell ASPIRE 200 Intermediate Gain (IG) SATCOM system. Honeywell International
- [STC SR00764DE](https://openairdocs.org/stc/SR00764DE): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out functionality using the Trig Avionics TT22 Transponder and Freeflight Systems 1201 Global Positioning System (GPS) with Wide Area Augmentation System (WAAS). Peregrine
- [STC SH5778SW](https://openairdocs.org/stc/SH5778SW): Addition of Electrically Driven Vapor Cycle, Freon or Refrigerant R-134a, Air Conditioning System. Air Comm Corporation
- [STC SR00162DE-D](https://openairdocs.org/stc/SR00162DE-D): Installation of a LifePort 'PLUS' system. LifePort LLC
- [STC SR00391DE](https://openairdocs.org/stc/SR00391DE): Installation of TREC dual patient handling system. LifePort LLC
- [STC SR02125LA](https://openairdocs.org/stc/SR02125LA): Installation of a One Man Loading Patient Litter System. LifePort LLC
- [STC SR02611NY-D](https://openairdocs.org/stc/SR02611NY-D): Installation of the LifePort One Man Loading Patient Litter System. LifePort LLC
- [STC SH8678SW](https://openairdocs.org/stc/SH8678SW): Installation of an electronic bay access door window. The NORDAM Group LLC
- [STC SH8679SW](https://openairdocs.org/stc/SH8679SW): Installation of a chin window. The NORDAM Group LLC
- [STC SR04023CH](https://openairdocs.org/stc/SR04023CH): Install air ambulance conversion. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR03573NY](https://openairdocs.org/stc/SR03573NY): Installation of Garmin GTN/GNS() Navigation with EDZ-705 or EDZ-756 EFIS. Maxcraft Avionics Ltd
- [STC SR04227NY](https://openairdocs.org/stc/SR04227NY): Installation of Garmin GWX Weather Radar System. Maxcraft Avionics Ltd
- [STC SR00256BO](https://openairdocs.org/stc/SR00256BO): Installation of Universal Avionics Systems Corporation (UASC) Software Control Number (SCN) 31.X in UASC Cockpit Display Computer (UCDC) P/N 3040-05-( ). Pro Star Aviation, LLC
- [STC SR00274BO](https://openairdocs.org/stc/SR00274BO): Installation of an L3 Communications GH-3100 Electronic Standby Instrument System (ESIS) and Optional Emergency Bus. Pro Star Aviation, LLC
- [STC SR00275BO](https://openairdocs.org/stc/SR00275BO): Installation of tail shaft cover antenna mount. Pro Star Aviation, LLC
- [STC SR00289BO](https://openairdocs.org/stc/SR00289BO): Installation ofa Kollsman General Aviation Vision System (GAViS ). Pro Star Aviation, LLC
- [STC SR04022NY](https://openairdocs.org/stc/SR04022NY): AF-ADELT improved installation. Caledonian Airborne Systems Ltd Caledonian House
- [STC SR01616SE](https://openairdocs.org/stc/SR01616SE): Installation of an engine air filter system. Aerometals
- [STC SR00763DE](https://openairdocs.org/stc/SR00763DE): Installation of a 62 Gallon Auxiliary Fuel Tank in the baggage compartment. Helifab Inc
- [STC SR09577RC](https://openairdocs.org/stc/SR09577RC): Installation of an Automatic Deployable Emergency Locator Transmitter (ADELT) System. Bristow US LLC
- [STC SR03441CH](https://openairdocs.org/stc/SR03441CH): Installation of TrueView Enhanced Vision System (EVS) T6-Series. Mayday Avionics Inc
- [STC SR09626RC](https://openairdocs.org/stc/SR09626RC): Installation of an aft cabin area Storage Net. Helifab Inc
- [STC SR03498NY](https://openairdocs.org/stc/SR03498NY): Install IONode Flight Data Monitor. Maxcraft Avionics Ltd
- [STC SH570NE](https://openairdocs.org/stc/SH570NE): Installation of door stops. Sikorsky Aircraft Corporation
- [STC SH765NE](https://openairdocs.org/stc/SH765NE): Installation of an opening camera window. Sikorsky Aircraft Corporation
- [STC SR00006NY](https://openairdocs.org/stc/SR00006NY): Installation of Medevac (EMS) interior. Sikorsky Aircraft Corporation
- [STC SR00033NY](https://openairdocs.org/stc/SR00033NY): Installation of grease fittings. Sikorsky Aircraft Corporation
- [STC SR00085NY](https://openairdocs.org/stc/SR00085NY): Installation of Bendix/King Model CAS 66A TCAS 1, System. Sikorsky Aircraft Corporation
- [STC SR00285NY](https://openairdocs.org/stc/SR00285NY): Installation of Medevac (EMS) Interior. Sikorsky Aircraft Corporation

All 352: https://openairdocs.org/model/sikorsky-s-76a/stcs.md

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