Skip to content
KnownTail
Aircraft record

N764P1984 Sikorsky S-76A

DeregisteredUnclaimedSource: FAA, updated Oct 18, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jul 31, 2017.

Safety record in brief:No NTSB accidents or incidents since 198219 ADs may apply10 service difficulty reports

Registration
Deregistered
Last based in
Lafayette, LA
owner city / state
Engine
250-C30 SER · 650 hp
Allison
Owners
1
since 1994
NTSB events
None
since 1982
ADs may apply
19
confirm with A&P
Service reports
10
since 1995

Registration

FAA Aircraft Registry · Oct 18, 2026
Last registered owner
Phi INC
Owner type
Corporation
City, state
Lafayette, LA
Certificate issued
Oct 26, 1994
Canceled
Jul 31, 2017
Airworthiness
Standard · Transport
Airworthiness date
Jul 7, 1984

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Sikorsky
Model
S-76A
Year
1984
Serial number
760276
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
14
Engines
2
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H1NE
Mode S code
AA51A9

Engine

Make and model
Allison 250-C30 Ser
Type
Turbo-shaft
Power
650 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 1994 – 2017Phi INCLafayette, LA

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 18, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

No NTSB accidents or incidents found for this airframe since 1982.

Accident history for this model

ADs published since 1998 that may apply (19)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2024-20-07Various HelicoptersDec 5, 2024Airframe (S-76A)Only with: Only helicopters modified by the applicable STC (SR00831LA, SR00780LA, SR01687LA, SR00856LA, SR01855LA, SR02244LA, SR01779LA, SR01459LA, SR01535LA, SR00932LA, SR02049LA, SR02484LA, or SR01902LA).
2017-19-01Sikorsky Aircraft Corporation HelicoptersJan 2, 2018Airframe (S-76A)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.
2015-26-10Sikorsky Aircraft Corporation HelicoptersFeb 9, 2016Airframe (S-76A)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).
2015-19-51Sikorsky Aircraft Corporation HelicoptersNov 10, 2015Airframe (S-76A)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.
2013-22-15Sikorsky Aircraft Corporation (Sikorsky) HelicoptersDec 13, 2013Airframe (S-76A)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.
Show all 19 ADs
ADSubjectEffectiveApplies to
2012-15-08Sikorsky Aircraft Corporation HelicoptersSep 21, 2012Airframe (S-76A)Only with: Electric rotor brake (ERB) P/N 76363-09100-012 installed.
2010-26-09Sikorsky Aircraft Corporation (Sikorsky) Model S76A, B, and C HelicoptersJan 12, 2011Airframe (S-76A)Only with: LITEF LCR-100 Attitude Heading and Reference System (AHRS) Unit P/N 145130-7100 installed
2010-10-02Sikorsky Aircraft Corporation Model S-76A, B, and C HelicoptersJun 17, 2010Airframe (S-76A)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.
2006-16-04Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Sep 7, 2006Engine (250-C30 SER)
2005-22-01Sikorsky Aircraft Corporation Model S-76A, B, and C HelicoptersNov 10, 2005Airframe (S-76A)Only with: Main rotor hub pilot fitting P/N 76103-08003-101 with 1500 or more hours TIS installed.
2003-04-15Sikorsky Aircraft Corporation Model S-76A, B, and C HelicoptersFeb 27, 2003Airframe (S-76A)
2002-15-51Sikorsky Aircraft Corporation Model S76A, B, and C HelicoptersOct 18, 2002Airframe (S-76A)
2001-10-06Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C HelicoptersMay 17, 2001Airframe (S-76A)Only with: Main rotor shaft assembly P/N 76351-09030 (all dash numbers) installed.
94-14-20 R1Sikorsky Aircraft Corporation Model S-76A HelicoptersJun 8, 2001Airframe (S-76A)Only with: Tail rotor blade assembly P/N 76101-05001 (all dash numbers) or 76101-05101 (all dash numbers) installed with more than 130 hours time-in-service.
2001-01-04Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C HelicoptersFeb 2, 2001Airframe (S-76A)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.
2000-11-52Sikorsky Aircraft Corporation Model S-76 Series HelicoptersAug 31, 2000Airframe (S-76A)
2000-12-09Sikorsky Aircraft Corporation (Sikorsky) Model S-76A HelicoptersJul 28, 2000Airframe (S-76A)Only with: Aero Aire Air Conditioning System P/N S-76A-1-2 installed, modified in accordance with STC SH4680SW.
99-19-30Sikorsky Aircraft Corp. Model S76A, B, and C HelicoptersOct 4, 1999Airframe (S-76A)
99-11-04Sikorsky Aircraft Model S-76A HelicoptersJul 9, 1999Airframe (S-76A)Only with: Turbomeca Arriel 1S1 engines installed in accordance with STC SH568NE, including drawing number 76070-30601.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (10)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Main rotor drive · bearing · failedAug 8, 2007

    MGB CHIP PLUGS INDICATED A METAL IN OIL CONDITION. THE MGB WAS REMOVED AND SENT TO COMPONENT OVERHAUL SHOP TO DETERMINE CAUSE OF METAL. OHS COMPLETELY DISASSEMBLED THE MGB AND DETERMINED THE BEARING CUP IN THE LEFT HAND BEVEL SPUR GEAR ASSY WAS THE PRIMARY CAUSE OF METAL. THE BEARING CONE…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Main rotor drive · oil jet · mismanufacturedAug 8, 2007

    MAIN GEARBOX REMOVED DUE TO METAL IN OIL AND DURING THE DETAIL INSPECTION FOUND THE OIL FEED HOLE OF THE LT INPUT OIL JET MISDRILLED. THIS MAY HAVE CONTRIBUTED TO THE LT INPUT PINION AND BEVEL GEARS UNACCEPTABLE TOOTH PATTERN WHICH MADE IT NECESSARY TO REPLACE THE FOLLOWING PARTS. THIS MAY HAVE…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · control valve · malfunctionedJun 1, 2007

    AFTER TAKEOFF FROM GC743, UNABLE TO RETRACT LANDING GEAR. RETURNED TO HOUMA WITH GEAR DOWN AS PER CHECK LIST. MAINTENANCE RESET THE LANDING GEAR CONTROL VALVE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Landing gear · proximity switch · out of adjustOct 4, 2006

    DURING CLIMBOUT, LANDING GEAR WOULD NOT RETRACT. NOSE WHEEL CENTERING LIGHT CAME ON. ADJUSTED NOSE WHEEL CENTERING PROXIMITY SWITCH.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine oil · connector · dirtyJun 23, 2006

    IN CRUISE FLIGHT NR 2 ENGINE OIL PRESSURE BEGAN TO FLUCTUATE FROM 45PSI TO AS LOW AS 10PSI INTERMITTENTLY. FOLLOWED CHECKLIST AND DIVERTED TO FOURCHON. NO SECONDARY INDICATIONS WERE PRESENT. MAINTENANCE CLEANED CONNECTOR TO THE NR 2 ENGINE OIL PRESSURE TRANSMITTER. SYSTEM CHECKED GOOD. DURING A…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Electrical power · battery · dischargedMay 21, 2003

    BATTERY DEAD. REPAIRED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Electrical power · battery · dischargedMay 21, 2003

    BATTERY DEAD. REPAIRED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Navigation · gyro · damagedFeb 28, 2003

    IMPACT INDICATOR ON VERTICAL GYRO WAS RED, INDICATING EXCESSIVE IMPACT. TO BE SENT TO VENDOR FOR REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Navigation · indicator · shortedFeb 27, 2003

    COPILOT HSI INDICATOR CIRCUIT BREAKER WILL NOT RESET.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Navigation · indicator · malfunctionedJan 7, 2003

    COPILOT ATTITUDE INDICATOR TURN NEEDLE PEGGED FULL RIGHT AT ALL TIMES. IN SHOP REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Related aircraft

Show all 8 related aircraft
All 19 registered Sikorsky S-76A aircraft

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 18, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 18, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

Request owner name removalReport an error in this record

Claim this airplane