# Service difficulty reports: MD Helicopters 369FF A list on [MD Helicopters 369FF](https://openairdocs.org/model/md-helicopters-369ff.md). Newest first. General aviation reporting is voluntary. - [SDR 2024FA0000675](https://openairdocs.org/sdr/2024FA0000675.md): Bearing Race · unserviceable · Aug 29, 2024 · N530WH · Hughes 369FF · Standard Practices/Structures > OVERRUNNING CLUTCH INNER RACE PN-369F5455-1 FAILED MD HELICOPTER CSP-COM5 CH 63-10-15 TABLE 502 NDT TESTING. - [SDR 2023FA0000571](https://openairdocs.org/sdr/2023FA0000571.md): Fuel Cell · abnormal · Sep 14, 2023 · N911WY · Hughes 369FF · Fuel Storage > PMA REPLACEMENT FUEL CELL IS CAUSING FUEL TO TURN GREEN. FUEL WAS SENT OUT TO A LAB TO BE TESTED AND TESTS WERE INCONCLUSIVE AS TO THE SUBSTANCE BUT IT IS SUSPECTED TO BE A DYE. THE MANUFACTURE WAS CONTACTED AND DENIES PUTTING ANY DYE IN THE TANK DURING THEIR - [SDR 2022F00465](https://openairdocs.org/sdr/2022F00465.md): Hook · failed · Nov 2, 2022 · N511NC · Hughes 369FF · Cargo Compartments > DURING SIDE PULL OPERATIONS, THE SIDE PULL HOOK SHAFT ASSEMBLY SHEARED IN HALF AND DEPARTED THE AIRCRAFT. VISUAL INSPECTIONS INDICATE METALLURGY ISSUES IN THE APPARENT MATERIAL. THE HOOK HAS BEEN SENT OUT FOR FURTHER DAMAGE EVALUATION TO DETERMINE CAUSE OF FA - [SDR 2020FA0000167](https://openairdocs.org/sdr/2020FA0000167.md): Fuel Cell · leaking · Aug 11, 2021 · N557CP · Hughes 369FF · Fuel Storage > LEFT FUEL CELL DEVELOPED LEAK DUE TO RUBBING WITH VERTICAL SUPPORTS AT CENTER BEAM STRUCTURE. INSTALLED ANTI-CHAFF TAPE TO ALL VERTICAL STIFFENERS. REPLACED FUEL CELL WITH REPAIRED LEFT CELL. NOTED THAT THE LAST SEVERAL NEWER MANUFACTURED HELICOPTERS LACKED - [SDR DXMR20200219163](https://openairdocs.org/sdr/DXMR20200219163.md): Bearing · seized · Mar 4, 2019 · N557CP · Hughes 369FF · Main Rotor Mast/Swashplate > DURING EXTREME COLD WEATHER, SWASHPLATE UNIBALL SEIZED ON M/R DRIVESHAFT CAUSING STIFF COLLECTIVE FORCES. - [SDR H44R2016051300001](https://openairdocs.org/sdr/H44R2016051300001.md): Cover Plate · worn · May 11, 2016 · N532EZ · Hughes 369FF · Engine/Transmission Coupling > DURING REPLACEMENT OF THE OVER RUNNING CLUTCH, A SPECIAL TOOL IS REQUIRED TO TORQUE THE INTERNAL WRENCHED RETENTION NUT INSIDE THE PTO SHAFT OF THE ENGINE. WHEN THE TOOL WAS WITHDRAWN PART OF IT REMAINED STUCK IN THE NUT, THE TECH DID NOT REALIZE THAT THIS HA - [SDR 2016FA0000011](https://openairdocs.org/sdr/2016FA0000011.md): Angle · cracked · Dec 30, 2015 · N530KK · Hughes 369FF · Fuselage Miscellaneous Structure > THE ANGLE HAS CRACKED ON ALL OF OUR ACFT. THE ANGLE IS RIVETED AND SCREWED INTO PLACE DIRECTLY BEHIND THE LOWER LT ENGINE MOUNT. CAUSE OF THE CRACK IS UNKNOWN, VIBRATION LEVELS WERE WITHIN ACCEPTABLE LEVELS AND NO UNUSUAL WEAR WAS NOTED. POSSIBLE CAUSE IS - [SDR H44R2015082700001](https://openairdocs.org/sdr/H44R2015082700001.md): Fairing · failed · Aug 21, 2015 · N532EZ · Hughes 369FF · Aerodynamic Fairings > CUSTOMER BROUGHT ACFT IN FOR ACCOMPLISHMENT OF REPETITIVE SB. DURING ACCOMPLISHMENT OF PRELIMINARY INSPECTION, NOTED ROTOR HUB FAIRING BROKEN OFF. PILOT RECALLED A SLIGHT BUFFET DURING FLIGHT BUT DID NOT THINK MUCH OF IT. PIECES AND HARDWARE FROM THE FAIRIN - [SDR DXMR202002190164](https://openairdocs.org/sdr/DXMR202002190164.md): Sending Unit · inaccurate · Apr 29, 2015 · N558CP · Hughes 369FF · Fuel Quantity Sensor > REPLACED FUEL QUANTITY SENDING UNIT, SN 2366 TT THIS UNIT 447.3 HOURS, INSTALLED 31 OCT 2014. SINCE NEW SENDER WAS SHOWING HIGHER FUEL LEVELS THAN AVAILABLE IN TANK. HAS BEEN A REOCCURRING PROBLEM WITH THESE SENDING UNITS WITH MULTIPLE ROTORCRAFT. - [SDR CA090606001](https://openairdocs.org/sdr/CA090606001.md): Elt · cracked · Jun 5, 2009 · Hughes 369FF · Emergency Locator Beacon > (CAN) SENT IN ELT FOR IT`S ANNUAL RECERTIFICATION. REMOVABLE COVER WAS BROKEN OUT AND THE MAIN CASE WAS CRACKED IN SEVERAL LOCATIONS. THIS UNIT HAND NOT BEEN DROPPED OR TAMPERED WITH. IT APPEARS THAT THE CASE HAS BEEN WEAKED BY UV LIGHT (AS WAS TOLD TO ME) AN - [SDR P4YA2009032500001](https://openairdocs.org/sdr/P4YA2009032500001.md): Support Bracket · cracked · Mar 25, 2009 · N971BW · Hughes 369FF · Fuselage Miscellaneous Structure > WHILE PERFORMING A FLIGHT CONTROL CHECK, PILOT PUSHED ON BOTH RUDDER PEDALS FIRMLY AND THE PEDAL BRACKET SUPPORT BROKE. - [SDR 2009FA0000022](https://openairdocs.org/sdr/2009FA0000022.md): Nut · backed out · Oct 27, 2008 · N5185G · Hughes 369FF · Engine Oil Cooler > OIL COOLER BLOWER DRIVEN PULLEY RETAINING NUT IS BACKING OFF OF SHAFT DURING NORMAL USE. NUT IS A STAINLESS STEEL, SILVER PLATED, ALL METAL SELF LOCKING TYPE NUT. THIS WAS THE 3RD OCCURRENCE OF THIS TYPE FOR OUR UNIT AND WE ARE ALSO AWARE OF ONE OTHER INCIDE - [SDR 2008FA0000741](https://openairdocs.org/sdr/2008FA0000741.md): Nut · backed out · Oct 26, 2008 · N5185G · Hughes 369FF · Rotorcraft Cooling Fan System > OIL COOLER BLOWER DRIVEN PULLEY RETAINING NUT IS BACKING OFF OF SHAFT DURING NORMAL US. NUT IS A STAINLESS STEEL, SILVER PLATED, ALL METAL SELF LOCKING TYPE NUT. THIS WAS THE THIRD OCCURRENCE OF THIS TYPE FOR OUR UNIT AND WE ARE ALSO CAUSES THE SHAFT BEARING - [SDR 2007FA0000630](https://openairdocs.org/sdr/2007FA0000630.md): Blower · damaged · May 24, 2007 · N97FF · Hughes 369FF · Engine Oil Cooler > OIL COOLER BLOWER APPEARS TO BE FOD`D OUT. ONE BLADE WAS FOUND ENABLED IN THE HOUSING. THE OUT OF BALANCE SITUATION BROKE ALL (4) BEARING CARRIER LEGS. DAMAGED BLOWER WAS REPLACED AND AC WAS RETURNED TO SERVICE. (K) - [SDR FNH2006F00000](https://openairdocs.org/sdr/FNH2006F00000.md): Governor · malfunctioned · Nov 3, 2006 · N530F · Hughes 369FF · Turbine Governor > ENGINE GOVERNOR DROPPED TO BETWEEN 90 PERCENT TO 95 PERCENT N2 IN CRUISE FLIGHT, MADE PRECAUTIONARY LANDING ON BEACH. INSPECTED GOVERNOR LINKAGE, AND PNEUMATIC LINET TO GOVERNOR, TEST FLOWN COULD NOT DUPLICATE DROP, GOVERNOR HAD APPROXIMATELY 4 HOURS TSO. SU - [SDR 2003FA0001049](https://openairdocs.org/sdr/2003FA0001049.md): Exhaust Stack · cracked · Sep 28, 2003 · N5841Z · Hughes 369FF · Engine Collector/Tailpipe/Nozzle > THE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE AC HAS 1627.3 HOURS TT. SERVICE REPORTS WAS DONE TO MFG SINCE 12-2000. IN 3 OCCASIONS THE MFG SENT THE EXHAUST PN 369D2860501 FOR REPLACEMENT, BUT IT DID NOT FIT INTO TH - [SDR 2003FA0001062](https://openairdocs.org/sdr/2003FA0001062.md): Exhaust Stack · cracked · Sep 24, 2003 · N5842Z · Hughes 369FF · Engine Collector/Tailpipe/Nozzle > THE EXHAUST STACK HAD TO BE REPAIRED SEVERAL TIMES SINCE 400.0 HOURS SINCE NEW. NOW THE HELICOPTER HAS 1568.2 HOURS TAT. IN 3 OCCASIONS THE MFG SENT THE EXHAUST PIN 369D2860-501 FOR REPLACEMENT BUT IT DID NOT FIT INTO THE HELICOPTER. IN MEAN TIME, PART CONT - [SDR OMNIDMR04](https://openairdocs.org/sdr/OMNIDMR04.md): Structure · cracked · Dec 14, 2001 · N30042 · Hughes 369FF · Rotorcraft Tail Boom > HORIZONTAL STABILIZER CRACKED ON TRAILING EDGE ABD TRAIM TAB CRACKED ON LEADING EDGE DUE TO EXCESSIVE FLUTTER. CRACKING IS CONCENTRATED AROUND AREA OF DAMPER WEIGHTS. TABS WERE TOO LONG AND ONLY SUPORTED BY RIVET ON THE LEADING EDGE, CAUSING EXCESSIVE FLUTTE - [SDR CA010504004](https://openairdocs.org/sdr/CA010504004.md): Shaft · broken · Apr 19, 2001 · Hughes 369FF · Tail Rotor Gearbox > (CAN) - METAL GENERATION, SCHEDULED 100 HOUR INSPECTION.- GEARBOX REMOVED AND SENT FOR REPAIR. - TEARDOWN INSPECTION FOUND THAT THE INPUT GEARSHAFT HAD FAILED INBOARD OF THE INPUT GEAR.- THIS GEARBOX HAD BEEN REPAIRED ON 3 PREVIOUS OCCASIONS FOR CLOUDY OIL/SLU - [SDR 20010511CW007](https://openairdocs.org/sdr/20010511CW007.md): Gearbox · failed · Apr 19, 2001 · N530HL · Hughes 369FF · Tail Rotor Gearbox > UPON SHUT DOWN, THE PILOT AND MECH NOTICE AN ODD NOISE COMING FROM THE TAIR ROTOR ACCOMPANIED BY A SLIGHT VIBRATION. AIRCRAFT WAS DUE FOR A 100 HR INSPECTION, SO T/R OIL WAS DRAINED AGAIN. THE CHIP PLUG HAD NO CHIPS BUT DID HAVE A BLACK PASTE. PASTE WAS EXA - [SDR CA010921004](https://openairdocs.org/sdr/CA010921004.md): Bolt · broken · Jul 26, 2000 · Hughes 369FF · Tail Rotor Head > (CAN) - TAILROTOR GEARBOX RETENTION HARDWARE, BOLT HEAD FOUND MISSING DURING SCHEDULED MAINTENANCE. - 3 REMAINING BOLTS WERE INSPECTED WITH NO FAILURES FOUND. ALL THE TAILROTOR GEARBOX RETENTION HARDWARE WAS REPLACED WITH NEW. A 300 HOUR RETIREMENT SCHEDULE - [SDR CA000110001](https://openairdocs.org/sdr/CA000110001.md): Bearing · making metal · Nov 1, 1999 · Hughes 369FF · Tail Rotor Gearbox > (CAN) INPUT ALIGNMENT BEARING MAKING METAL. GEARBOX STRIPPED TO DETERMINE CAUSE OF PROBLEM.(CHIP LLTE IN FLIGHT) - [SDR CA000110003](https://openairdocs.org/sdr/CA000110003.md): Bearing · making metal · Oct 12, 1999 · Hughes 369FF · Tail Rotor Head > (CAN) INPUT ALIGNMENT BEARING MAKING METAL (CHIP LITE IN CRUISE. GEARBOX STRIPPEDTO DETERMINE CAUSE OF METAL GENERATION. - [SDR CA961216004](https://openairdocs.org/sdr/CA961216004.md): Driveshaft · teeth missing · Nov 20, 1996 · Hughes 369FF · Main Rotor Gearbox > (CAN) MAIN DRIVESHAFT INSPECTED DURING 300 HOUR INSPECTION. 7 OUT OF 34 TEETH ON OUTPUT SPLINE TO MAIN TRANSMISSION FOUND CRACKED. - [SDR 95ZZZX3923](https://openairdocs.org/sdr/95ZZZX3923.md): Window · departed · Jun 30, 1995 · N911VC · Hughes 369FF · Flight Compartment Windows > THE SLIDE IN THE PILOT'S WINDOW DEPARTED THE HELICOPTER WHEN THE PILOT TRIED TO CLOSE THE WINDOW IN FORWARD FLIGHT. THE PILOT STATED HE BARELY TOUCHED THE SLIDER WHEN IT DEPARTED. ## 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 = '369FF' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/md-helicopters-369ff/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.