# Service difficulty reports: Summa 369HS

A list on [Summa 369HS](https://openairdocs.org/model/summa-369hs.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2025FA0000782](https://openairdocs.org/sdr/2025FA0000782.md): Filler · corroded · Nov 25, 2025 · N396HA · Hughes 369HS · Fuselage Main, Structure
  > AIRCRAFT REG: N396HA, AIRCRAFT MSN 1488. BULK CARGO DOOR ENTRANCE CUTOUT LOWER EDGE FILLER FOUND WITH 4 OFF LOCATION CORRODED. MEASURING 30X15MM, 25X10MM,20X20MM AND 10X10MM.
- [SDR 2011FA0000051](https://openairdocs.org/sdr/2011FA0000051.md): Spar · cracked · Oct 1, 2010 · N9260F · Hughes 369HS · Horizontal Stabilizer, Spar/Rib
  > ON 10/1/10 ACFT EXPERIENCED AN INFLIGHT FAILURE AND SUBSEQUENT SEPARATION OF THE OTBD SECTION OF THE HORIZ STABILIZER DUE TO A CRACK IN THE SPAR AT STA 42.5. THE CRACKING OF THE SPAR APPEARS TO HAVE ALLOWED THE FLEXING OF THE STABILIZER AND SUBESEQUENT FAILUR
- [SDR 2010FA0001107](https://openairdocs.org/sdr/2010FA0001107.md): Seal · missing · Sep 24, 2010 · N9233F · Hughes 369HS · Ice/Rain Protection System
  > ON 5/7/2010, INSTALLED A NEW ANTI-ICE VALVE PN 23053192 AT ACTT 14805.1. DURING A ROUTINE 100 HR INSP OF THE ACFT ON 9/24/2010 AT ACTT 14904.8. REMOVED AND INSPECTED THE VALVE AND DISCOVERED THAT THE POPPET SEAT SEAL WAS MISSING FROM THE POPPET. POPPET SEAT
- [SDR 2010FA0000822](https://openairdocs.org/sdr/2010FA0000822.md): Anti-Ice Valve · unsecure · May 5, 2010 · N9233F · Hughes 369HS · Ice/Rain Protection System
  > THE INSTALLED ANTI-ICE VALVE (PN 23053192AL) POPPET SEAT RETAINING SCREW WAS NOT PROPERLY STAKED DURING THE MFG PROCESS AND AS A RESULT THE SCREW WAS INGESTED INTO THE TURBINE SECTION OF THE ENGINE AND DAMAGED THE NR 1, 2, 3 WHEELS, THE 1ST, 2ND AND 4TH STAGE
- [SDR CA070201008](https://openairdocs.org/sdr/CA070201008.md): Fcu · failed · Jan 27, 2007 · Hughes 369HS · Fuel Control/Turbine Engines
  > (CAN) AFTER THE AIRCRAFT WAS STARTED, THE PILOT DECIDED TO DO A WALK AROUND THE AIRCRAFT. FUEL WAS NOTICED FLOWING FROM THE ENGINE BAY TO THE GROUND. FURTHER INVESTIGATION REVEALED A MASSIVE FUEL LEAK AT THE FUEL CONTROL THROTTLE LEVER SHAFT SEAL. FUEL WAS FLO
- [SDR CA020719003](https://openairdocs.org/sdr/CA020719003.md): Bearing · failed · Mar 13, 2002 · Hughes 369HS · Turbine Section
  > (CAN) CHIP LIGHT CAME ON AT START UP. ENGINE CHIP PLUGS WERE CLEANED ONLY TO COME ON AGAIN ON THE NEXT START UP. THE ENGINE WAS IMMEDIATELY PULLED AND SENT TO AN OVERHAUL SHOP. THEY DISCOVERED THAT THE PROBLEM WAS THE NR 2 BEARING RACE WAS BEING WARN AWAY.
- [SDR AUS20020115](https://openairdocs.org/sdr/AUS20020115.md): Bearing · cracked · Jan 18, 2002 · Hughes 369HS · Main Rotor Gearbox
  > (AUS) MAIN TRANSMISSION BEARING INNER RACE SPLIT WITH HEAVY BRINNELLING EVIDENT. METAL CONTAMINATION OF TRANSMISSION OIL SYSTEM.
- [SDR AUS20011238](https://openairdocs.org/sdr/AUS20011238.md): Blade · failed · Nov 14, 2001 · Hughes 369HS · Turbine Engine Compressor Section
  > (AUS) SECOND STAGE COMPRESSOR BLADES (2OFF) FAILED). MAJOR DOWNSTREAM DAMAGE. SEVERAL OTHER SECOND STAGE ROTOR BLADES WERE FOUND TO BECRACKED FROM THE TRAILING EDGE.
- [SDR AUS20010925](https://openairdocs.org/sdr/AUS20010925.md): Shaft · distorted · Aug 24, 2001 · Hughes 369HS · Tail Rotor Gearbox
  > (AUS) TAIL ROTOR GEARBOX OUTPUT SHAFT BEARINGS BREAKING UP AND SHAFTRUNOUT EXCESSIVE. SHAFT RUNOUT APPROXIMATELY 0.457MM (0.018IN). MAXIMUM RUNOUT 0.0254MM (0.001IN).
- [SDR CA010621026](https://openairdocs.org/sdr/CA010621026.md): Pulley · failed · May 24, 2001 · Hughes 369HS · Engine Oil Cooler
  > (CAN) OIL COOLER PULLEY IS MADE UP OF A SPLINE BELT PULLEY WITH A METAL RING THAT IS "STAKED" ONTO THE PULLEY. THE RING WAS FOUND AROUND THE ENGINE OUTPUT DRIVE SHAFT AFTER GROUND RUNNING THE A/C. A NEW PART WAS USED TO COMPARE THE STAKING MARKS ON THE OLD PUL
- [SDR 20000412SH028](https://openairdocs.org/sdr/20000412SH028.md): Probe · damaged · Mar 7, 2000 · N9094F · Hughes 369HS · Engine Temperature Indicating System
  > THE NYLON INSERT IN THE TEMPERATURE PROBE LET GO RESULTING IN FLUCTUATION AND DROPPING OIL PRESSURE AND A LOSS OF OIL. THE ENGINE HAD TO BE TORN DOWN FOR INSPECTION. MAIN DAMAGE SEEMS TO BE THE ENGINE''S NR 8 BEARING WHICH WAS DESTROYED. (X)
- [SDR 99ZZZX1473](https://openairdocs.org/sdr/99ZZZX1473.md): Valve · broken · Mar 19, 1999 · N9486F · Hughes 369HS · Engine Oil Cooler
  > DURING TAKEOFF, ENGINE OIL PRESSURE DROPPED BELOW MINIMUMS. THROTTLE WAS CLOSED AND AIRCRAFT WAS AUTOROTATED. CHECK VALVE NIPPLE HAD SEVERED AT OIL COOLER INLET.
- [SDR 98ZZZX3339](https://openairdocs.org/sdr/98ZZZX3339.md): Blade · cracked · Aug 1, 1998 · N4467V · Hughes 369HS · Main Rotor Blades
  > HELICOPTER INBOUND FOR LANDING WHEN PILOT NOTICED VIBRATION, MADE NORMAL LANDING. MAINT EXAM OF ROTOR SYS FOUND YELLOW BLADE CRACKED FROM TRAILING EDGE OF BLADE, BOTH TOP AND BOTTOM TO MAIN SPAR. CRACK LOCATED AT BLADE STA 71 OR 19.3750 INCHES FROM END OF AD
- [SDR CA980804009](https://openairdocs.org/sdr/CA980804009.md): Fan · wrong part · Jul 16, 1998 · Hughes 369HS · Starter-Generator
  > (CAN) IN SHOP FOR REPAIR, LEAR SIEGLER STARTER/GENERATOR HAD AN APC FAN P/N 1503G1107 INSTEAD OF THE LEAR SIEGLER FAN P/N 23032-1481.
- [SDR 98ZZZX1272](https://openairdocs.org/sdr/98ZZZX1272.md): Case Half · eroded · Mar 9, 1998 · N13WD · Hughes 369HS · Fuel Controlling System
  > A SLIGHT RUB WAS HEARD IN THE COMPRESSOR WHEN THE N1 WAS ROTATED. UPON CASE HALF REMOVAL FOR INSPECTION, SEVERE VANE EROSION WAS FOUND. THE CHORD OF ONE VANE WAS SO THIN AS TO CAUSE THE VANE TO BEND AND RUB ON THE COMPRESSOR ROTOR. SUBMITTER SUSPECTS CASE H
- [SDR 97ZZZX4860](https://openairdocs.org/sdr/97ZZZX4860.md): Door · departed · Oct 3, 1997 · N831FG · Hughes 369HS · Passenger/Crew Doors
  > DURING FLIGHT, THE RIGHT MAIN DOOR OPENED, THEN DEPARTED THE AIRCRAFT. THE DOOR HINGES WERE MODIFIED BY THE INSTALLATION OF QUICK REMOVAL DOOR HINGES STC SH2530 NM. DISCOVERED DURING INSPECTION THAT THE LATCHING FEATURE USED WAS NOT PROPERLY ENGAGED ALLOWING
- [SDR 97ZZZX3993](https://openairdocs.org/sdr/97ZZZX3993.md): Blade · cracked · Aug 20, 1997 · N33TM · Hughes 369HS · Tail Rotor Blades
  > DURING POST-FLIGHT INSPECTION AFTER APPROXIMATELY A 2-HOUR FLIGHT, PILOT NOTICED PINHOLE IN T/R BLADE LEADING EDGE WITH APPROXIMATELY 1 INCH CRACKS DOWN BOTH SIDES OF BLADES. THESE BLADES HAD NEW DESIGN ABRASION STRIPS INSTALLED IAW AD 95-03-11 ON 1-2-96 AT P
- [SDR 97ZZZX2835](https://openairdocs.org/sdr/97ZZZX2835.md): Bearing · cracked · May 2, 1997 · Hughes 369HS · Engine/Transmission Coupling
  > OVERRUNNING CLUTCH BEARING OUTER RACE IS CRACKED.
- [SDR 97ZZZX1669](https://openairdocs.org/sdr/97ZZZX1669.md): Bearing · failed · Mar 24, 1997 · N8388F · Hughes 369HS · Tail Rotor Control System
  > TAIL ROTOR PITCH CHANGE LINKS WERE INSTALLED AT 13,300.8 AIRCRAFT HOURS. AT 13,432 AIRCRAFT HOURS, ONE PITCH CHANGE LINK FAILED AT ONE END. THE BEARING APPEARS TO HAVE BEEN EXCESSIVELY OVER ROLL STAKED UPON INSTALLATION INTO THE LINK BEARING HOUSING. FAILUR
- [SDR AU970163](https://openairdocs.org/sdr/AU970163.md): Blade · cracked · Feb 19, 1997 · Hughes 369HS · Tail Rotor Blades
  > (AUS) TAIL ROTOR BLADE SKIN CRACKED IN AREA JUST INBOARD OF THE LEADING EDGE PROTECTIVE STRIP RUNNING CHORDWISE TOWARDS THE TRAILING EDGE - CRACK LENGTH APPROXIMATELY 25.4MM (1IN)
- [SDR AU970120](https://openairdocs.org/sdr/AU970120.md): Blade · cracked · Feb 19, 1997 · Hughes 369HS · Tail Rotor Blades
  > (AUS) TAIL ROTOR BLADE SKIN CRACKED IN AREA INBOARD OF THE LEADING EDGE PROTECTION STRIP RUNNING CHORDWISE FROM THE LEADING EDGE TOWARDS THE TRAILING EDGE - CRACK LENGTH APPROXIMATELY 25.4MM (1IN)
- [SDR 97ZZZX200](https://openairdocs.org/sdr/97ZZZX200.md): Swashplate · bushing detached · Nov 29, 1996 · N9244F · Hughes 369HS · Tail Rotor Head
  > VIBRATION FELT THROUGH T/R PEDALS, SPECIFICALLY LEFT PEDALS. UPON INSPECTION, BUSHING AT INBOARD END OF T/R SWASHPLATE T-HEAD HAD COME OUT, SLID INBOARD ON T/R OUTPUT SHAFT AND DAMAGED T/R OUTPUT SHAFT SEAL.
- [SDR 96ZZZX4103](https://openairdocs.org/sdr/96ZZZX4103.md): Pulley Assy · bottom out · Jul 26, 1996 · Hughes 369HS · Main Rotor Gearbox
  > ON SOME MAIN ROTOR TRANSMISSION ASSEMBLIES, THE SPLINES ON THE PULLEY ASSEMBLY DRIVER BOTTOM OUT ON THE SPLINES OF THE GEARSHAFT INPUT BEVEL PINION (369A5107-21). THIS RESULTS IN A GAP BETWEEN THE GUARD (369H5657) AND THE SPACER (369A5165). OPERATING WITH TH
- [SDR 96ZZZX3839](https://openairdocs.org/sdr/96ZZZX3839.md): Link Assy · bushing loose · Jun 11, 1996 · N42405 · Hughes 369HS · Main Rotor Head
  > WHILE C/W WITH VISUAL INSPECTION PER AD 93-03-13 (R/D 3-21-95) TWO BLADE ATTACHMENT BUSHINGS WERE FOUND LOOSE IN ONE LEAD/LAG LINK ASSY. M/R HUB TO BE RETURNED TO A MDHS SERVICE CENTER FOR REPLACEMENT OF THIS LINK ASSY WITH A SERVICEABLE PART.
- [SDR 96ZZZX3836](https://openairdocs.org/sdr/96ZZZX3836.md): Pinion Shaft · worn · Jun 10, 1996 · N369PF · Hughes 369HS · Main Rotor Gearbox
  > MAIN ROTOR TRANSMISSION LOCKNUT LOST TORQUE AND ALLOWED BEARINGS TO FRET ON SHAFT WEARING THE SHAFT UNDER THE BEARINGS AND ACCESSORY DRIVE GEAR. THIS ALLOWED THE DRIVE PIN TO SHEAR AND WHENEVER TORQUE WAS BELOW 6 PERCENT ENGINE TORQUE, THE OIL PUMP AND ROTOR
- [SDR AU960192](https://openairdocs.org/sdr/AU960192.md): Housing · corroded · Feb 15, 1996 · Hughes 369HS · Vertical Stabilizer
  > (AUS) STABILIZER STRUT DAMPER SHAFT PULLED FROM FITTING DURING HEAVY VIBRATION FOLLOWING TAIL ROTOR DRIVE SHAFT FAILURE (MDR 96/0191) - FITTING EXHIBITED SIGNS OF SEVERE INTERGRANNULAR CORROSION - AIRCRAFT OPERATES IN A SALT LADEN ENVIRONMENT
- [SDR AU960191](https://openairdocs.org/sdr/AU960191.md): Drive Shaft · sheared · Feb 15, 1996 · Hughes 369HS · Tail Rotor Drive Shaft
  > (AUS) TAIL ROTOR DRIVE SHAFT SHEARED APPROXIMATELY 457.2MM (18IN) FROM THE FORWARD END - SEVERAL LONGITUDINAL CRACKS WERE EVIDENT IN THEAREA OF THE FAILURE WHEN VIEWED UNDER X10 MAGNIFICATION
- [SDR CA960116010](https://openairdocs.org/sdr/CA960116010.md): Fcu · failure · Nov 20, 1995 · Hughes 369HS · Fuel Control/Reciprocating Engines
  > (CAN)START LAG AT AROUND 28 PERCENT N1 UP TO 38 PERCENT. THEN START RESUMED FOR SECOND PEAK. WOULD NEED HIGH CHARGE BATTERY FOR START-UP. FIRST PEAK 720 DEGREES, THEN WENT BACK DOWN TO 550 DEGREES THROUGH 28 PERCENT N1 TO 38 PERCENT N1. SECOND PEAK AT 38 PERC
- [SDR 95ZZZX6348](https://openairdocs.org/sdr/95ZZZX6348.md): Bolt · wrong part · Nov 9, 1995 · N9110F · Hughes 369HS · Tail Rotor Gearbox
  > ACFT WAS IN FOR A 100-HOUR INSP. MECHANIC PERFORMING TAIL ROTOR GEARBOX MOUNT RE-TORQUE, CUT THE SAFETY WIRE AND THE BOLT PULLED OUT. IT WAS ALSO FOUND THAT 2 OTHER BOLTS WERE ONLY IN PLACE BY 2 THREADS. MECHANIC STATED BOLTS WERE INCORRECT, PN NAS1304-24H,
- [SDR 95ZZZX1316](https://openairdocs.org/sdr/95ZZZX1316.md): Strut Assy · cracked · Jan 30, 1995 · N91GG · Hughes 369HS · Main Landing Gear Strut/Axle/Truck
  > AFTER FLIGHT, THE PILOT NOTED THAT THE HELICOPTER WAS SITTING VERY LOW ON THE AFT LEFT SIDE. AN INSPECTION WAS CONDUCTED AND FOUND AFT LEFT LANDING GEAR STRUT ASSY CRACKED AT THE INSIDE RIVET HOLE. THE RIVET ATTACHES THE SUPPORT FOR THE LOWER GUIDE AND FILLE

## 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 = '369HS'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/summa-369hs/reports

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