# Service difficulty reports: Sikorsky S-76D

A list on [Sikorsky S-76D](https://openairdocs.org/model/sikorsky-s-76d.md).

Newest first. General aviation reporting is voluntary.

- [SDR AYPA20260917001](https://openairdocs.org/sdr/AYPA20260917001.md): Fire Detector · false activation · Aug 14, 2026 · N676FX · Skrsky S76D · Fire Detection
  > DURING CRUISE FLIGHT, A MOMENTARY INSTANCE OF THE #1 ENG FIRE WARNING SYSTEM ILLUMINATED. NO SECONDARY OR CONFIRMING INDICATIONS. NO TRAILING SMOKE WAS OBSERVED.
- [SDR 2026F00071](https://openairdocs.org/sdr/2026F00071.md): Eec · defective · Apr 9, 2026 · N760AF · Skrsky S76D · Fuel Controlling System
  > NR 1 ENGINE ILLUMINATED MULTIPLE CASE MESSAGES INFLIGHT.
- [SDR 2025F00236](https://openairdocs.org/sdr/2025F00236.md): Control Module · failed · Jun 19, 2025 · N36RP · Skrsky S76D · Autopilot System
  > DURING PREFLIGHT CHECKS ON THE 18TH, THE AP1 FAILED, AND THE FLIGHT WAS CANCELLED. AFTER CONSULTATION WITH MAINTENANCE PERSONNEL AND SIKORSKY, THE CREW WAS ASKED TO RECOVER THE AIRCRAFT, TO HOME BASE (KDAL), FROM AUSTIN (KAUS), AND MEL'ED THE AIRCRAFT ON THE
- [SDR 2025FA0000122](https://openairdocs.org/sdr/2025FA0000122.md): Exhaust Stack · cracked · Feb 20, 2025 · N27DX · Skrsky S76D · Engine Collector/Tailpipe/Nozzle
  > DURING INSPECTION, FOUND L/H FWD EXHAUST STACK HAS CRACK 6" IN LENGTH AND VARIOUS TANGS CRACKED.
- [SDR Z1RA76006152024](https://openairdocs.org/sdr/Z1RA76006152024.md): Filter · melted · Jun 15, 2024 · N760AF · Skrsky S76D · Air Distribution System
  > EMI FILTER / RELAY FAILED CAUSING PLASTIC COVER TO MELT
- [SDR Z1RA202403063242](https://openairdocs.org/sdr/Z1RA202403063242.md): Display · failed · Mar 4, 2024 · N760AF · Skrsky S76D · Central Display
  > CO-PILOT IAD SCREEN WENT BLACK DURING FLIGHT AND WOULD NOT POWER UP.
- [SDR Z1RA2024030630324](https://openairdocs.org/sdr/Z1RA2024030630324.md): Display · failed · Mar 3, 2024 · N760AF · Skrsky S76D · Central Display
  > CO-PILOT IAD FAILED IN FLIGHT.
- [SDR 2023FA0000809](https://openairdocs.org/sdr/2023FA0000809.md): Seal · failed · Dec 5, 2023 · N553XB · Skrsky S76D · Main Rotor Gearbox
  > DURING INSPECTION FOUND MGB LOWER MAST SEAL IS LEAKING.
- [SDR Z1RA76010232022](https://openairdocs.org/sdr/Z1RA76010232022.md): Generator · worn · Oct 23, 2022 · N760AF · Skrsky S76D · AC Generation System
  > AC GEN BEARING LIGHT ILLUMINATED IN FLIGHT.
- [SDR Z1RA76004252022](https://openairdocs.org/sdr/Z1RA76004252022.md): Harness · intermittent · Apr 25, 2022 · N760AF · Skrsky S76D · Miscellaneous Wiring
  > DURING LANDING GEAR RETRACTION, #2 SERVO BYPASS LIGHT ILLUMINATED. AIRCRAFT ABORT TRIP AND RECOVERED TO KLIT
- [SDR Z1RA76002062022](https://openairdocs.org/sdr/Z1RA76002062022.md): Hydraulic System · intermittent · Feb 6, 2022 · N760AF · Skrsky S76D · Hydraulic Power System
  > UPON SHUTDOWN A EXCEEDANCE WAS NOTED FOR HIGH HYDRAULIC PRESSURE. AFTER TROUBLESHOOTING / HUMS DOWNLOAD IT WAS NOTED THAT HYDRAULIC PRESSURE HAD REACHED 3340 PSI. CONDUCTING RUNUPS RESULTED IN #2 HYDRAULIC PRESSURE NOT BEING VERY STEADY / VERY WEAK REGULATIO
- [SDR Z1RA76110092021](https://openairdocs.org/sdr/Z1RA76110092021.md): None · failed · Oct 9, 2021 · N761AF · Skrsky S76D · Indicating/Recording System
  > ON OUTBOUND LEG OF HEMS FLIGHT #1 VMM FAILED WITH LOSS OF COPILOTS INSTRUMENTS. TRIP ABORTED AND AIRCRAFT RETURNED TO KLIT
- [SDR Z1RA76005032021](https://openairdocs.org/sdr/Z1RA76005032021.md): Tab · missing · May 3, 2021 · N760AF · Skrsky S76D · Main Rotor Blades
  > ONE INBOARD TRIM TAB MISSING DURING PREFLIGHT
- [SDR Z1RA761102320201](https://openairdocs.org/sdr/Z1RA761102320201.md): Servo · unserviceable · Jan 14, 2021 · N761AF · Skrsky S76D · Fuselage Structure (General)
  > FORWARD AND AFT VIBRATION FELT IN THE CYCLIC DURING HOVER AND FLIGHT.
- [SDR Z1RA76110232020](https://openairdocs.org/sdr/Z1RA76110232020.md): Servo · leaking · Oct 23, 2020 · N761AF · Skrsky S76D · Tail Rotor Control System
  > TAIL ROTOR SERVO LEAKING AT SHAFT SEAL.
- [SDR Z1RA20180125039](https://openairdocs.org/sdr/Z1RA20180125039.md): Attach Bracket · cracked · Jan 23, 2018 · N761AF · Skrsky S76D · Fuselage Main, Attach Fittings
  > NR 1 & NR 2 ENGINE BLEED VALVE SUPPORT BRACKETS BOTH CRACKED THROUGH SUPPORT SADDLES.
- [SDR Z1RA7201801080002](https://openairdocs.org/sdr/Z1RA7201801080002.md): Transducer · out of limits · Jan 5, 2018 · N760AF · Skrsky S76D · Autopilot System
  > NR 1 AUTOPILOT DISENGAGED DURING CRUISE FLIGHT. ROLL TRANSDUCER OUT OF LIMITS.
- [SDR Z1RA201801080001](https://openairdocs.org/sdr/Z1RA201801080001.md): Transducer · out of limits · Jan 5, 2018 · N760AF · Skrsky S76D · Autopilot System
  > NR 1 AUTOPILOT DISENGAGED DURING CRUISE FLIGHT. FOUND THE TRANSDUCER OUT OF LIMITS.
- [SDR Z1RA7610381211201](https://openairdocs.org/sdr/Z1RA7610381211201.md): Blade · debonded · Dec 11, 2017 · N760AF · Skrsky S76D · Tail Rotor Blades
  > DURING SPECIAL 25 HOUR TAIL ROTOR BLADE INSPECTION, OUTBOARD BLADE WAS NOTED TO BE DEBONDED FROM TAIL ROTOR PITCH HORN.
- [SDR Z1RA761038120717](https://openairdocs.org/sdr/Z1RA761038120717.md): Display · failed · Dec 7, 2017 · N760AF · Skrsky S76D · Central Display
  > DURING FLIGHT #1 SIDE MFD PRODUCED FAIL MESSAGE. WOULD NOT REBOOT.
- [SDR Z1RA761039120817](https://openairdocs.org/sdr/Z1RA761039120817.md): Pump · inoperative · Dec 7, 2017 · N761AF · Skrsky S76D · Cabin Equipment/Furnishings
  > AIR MEDICAL PUMP WILL NOT OPERATE. UPON POWER APPLIED TRIPS CIRCUIT BREAKER PROTECTION
- [SDR Z1RA761039112017](https://openairdocs.org/sdr/Z1RA761039112017.md): Vor System · failed · Nov 20, 2017 · N761AF · Skrsky S76D · Visual Omnirange (VOR) System
  > #2 NAV HAS FAILURE CODE WHEN ON FREQS ABOVE 109
- [SDR Z1RA201710120001](https://openairdocs.org/sdr/Z1RA201710120001.md): Autopilot Sys · malfunctioned · Oct 11, 2017 · N761AF · Skrsky S76D · Autopilot System
  > DURING AIRCRAFT RUN-UP, NR 2 AUTOPILOT WOULD NOT COMPLETE BIT TEST DURING AP TEST. UNABLE TO CLEAR OR RESET.
- [SDR Z1RA7201710028929](https://openairdocs.org/sdr/Z1RA7201710028929.md): Wire Harness · inoperative · Sep 29, 2017 · N760AF · Skrsky S76D · Landing Gear System Wiring
  > RIGHT MAIN LANDING GEAR DOWN LOCK LIGHT WOULD NOT ILLUMINATE ON GEAR PANEL. APPROACH TO HOSPITAL ABORTED AND AIRCRAFT RETURNED TO HANGAR. MAIN GEAR TESTED TO ENSURE DOWN AND LOCKED. TESTING REVEAL RIGHT MAIN GEAR WIRE HARNESS DOWN SENSOR INOPERATIVE. THE WIRE
- [SDR Z1RA2017082100008](https://openairdocs.org/sdr/Z1RA2017082100008.md): Wire · broken · Aug 18, 2017 · N760AF · Skrsky S76D · Navigation System Wiring
  > NR 2 MCDU FAILURE LIGHT ON POWER UP. LOCATED BROKEN WIRE AT CONNECTOR PLUG P180R PIN 39, MCDU HEALTH DISCREET TO VMM P100R B H05 PIN. WIRE WAS TOO SHORT UPON ORIGINAL INSTALL, REULT CAUSED BREAKAGE
- [SDR Z1RA2017082100007](https://openairdocs.org/sdr/Z1RA2017082100007.md): Wire Harness · damaged · Aug 16, 2017 · N760AF · Skrsky S76D · Landing Gear System Wiring
  > RIGHT MLG HARNESS CAUSING LANDING GEAR POSITION INDICATION FAULTS. ABORTED APPROACHED. RETURNED TO BASE. GEAR CONFIRMED DOWN PRIOR TO LANDING. INSTALLED SEGMENT (S26 LEG) REMOVED FROM REPLACEMENT HARNESS AND INSTALLED.
- [SDR Z1RA7201708210006](https://openairdocs.org/sdr/Z1RA7201708210006.md): Ahrs · failed · Aug 14, 2017 · N760AF · Skrsky S76D · Attitude and Direction Data System
  > NR 2 AHRS FAILED ON RUN UP.
- [SDR Z1RA2017082100005](https://openairdocs.org/sdr/Z1RA2017082100005.md): Servo · leaking · Aug 13, 2017 · N760AF · Skrsky S76D · Hydraulic System, Main
  > NR 2 SERVO BYPASS WHEN GEAR UP SELECTED. HYDRAULIC LEAK.
- [SDR Z1RA7201708210003](https://openairdocs.org/sdr/Z1RA7201708210003.md): Motor · failed · Aug 8, 2017 · N760AF · Skrsky S76D · Air Distribution Fan
  > FAILED, EVAPERATION BLOWER.
- [SDR Z1RA201708210002](https://openairdocs.org/sdr/Z1RA201708210002.md): Cover · split · Jul 6, 2017 · N760AF · Skrsky S76D · Flight Compartment Equipment
  > GLARESHIELD COVER IS CRACKING AND SPLITTING.
- [SDR Z1RA201708210001](https://openairdocs.org/sdr/Z1RA201708210001.md): Wire Harness · broken · May 30, 2017 · N761AF · Skrsky S76D · Landing Gear System Wiring
  > LEFT MLG DOWN INDICATION INTERMITTENT. LEG HAS BROKEN WIRES IN HARNESS.
- [SDR Z1RA2017082100009](https://openairdocs.org/sdr/Z1RA2017082100009.md): Harness · broken · May 18, 2017 · N761AF · Skrsky S76D · Landing Gear System Wiring
  > LEFT MLG DOWN INDICATION INTERMITTENT. FOUND WIRE HARNESS BROKEN.
- [SDR Z1RA201705090001](https://openairdocs.org/sdr/Z1RA201705090001.md): Wire Harness · broken · May 9, 2017 · N761AF · Skrsky S76D · Landing Gear System Wiring
  > DURING LANDING APPROACH TO HOSPITAL LANDING PAD, LT MAIN LANDING GEAR UNSAFE LIGHT WOULD NOT EXTINGUISH AND GREEN SAFE LIGHT NOT ILLUMINATED. APPROACH ABORT AND TRANSITIONED TO THE AIRPORT WHERE A VISUAL OF THE LANDING GEAR WAS COMPLETED TO ENSURE DOWN. LT SEG
- [SDR ALGA2014081408286](https://openairdocs.org/sdr/ALGA2014081408286.md): Wheel · corroded · Aug 12, 2014 · N722BG · Skrsky S76D · Wheel/Ski/Float
  > NOSE WHEEL WILL NOT HOLD PRESS, DISASSEMBLED NOSE WHEEL FOUND EXCESSIVE CORROSION ON WHEEL HALF PN 162-19700 SN 1733.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = 'S76D'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/sikorsky-s-76d/reports

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