# Summa 369HS - Type: Aircraft model (FAA registry) - Registry code: 05617KC - Manufacturer (registry): SUMMA CORP - Model: 369HS - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Turbo-shaft - Seats: 4 - Weight class: Up to 12,499 lb - Certification: Type certificated - Data sheet: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) (OpenAirDocs) - Holder: MD Helicopters LLC - Registered aircraft: 1 - Page: https://openairdocs.org/model/summa-369hs 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 2026-19-01](https://openairdocs.org/ad/2026-19-01): Rotorcraft flight control · MD Helicopters 369, 369 (Army YOH-6A), 369A and 11 more. Effective Oct 20, 2026 - [AD 2025-17-11](https://openairdocs.org/ad/2025-17-11): tail rotor control system · MD Helicopters 369 (Army YOH-6A), 369A (Army OH-6A), 369D and 9 more. Effective Oct 10, 2025 - [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 2021-22-11](https://openairdocs.org/ad/2021-22-11): Tail Rotor Control System · MD Helicopters 369D, 369E, 369F and 7 more. Effective Jan 10, 2022 - [AD 2020-18-20](https://openairdocs.org/ad/2020-18-20): Main Rotor Blade · MD Helicopters 369A, 369D, 369E and 7 more. Effective Oct 28, 2020 - [AD 2020-11-07](https://openairdocs.org/ad/2020-11-07): Main Rotor System · MD Helicopters 369D, 369E, 369FF and 6 more. Effective Jun 30, 2020 - [AD 2019-05-04](https://openairdocs.org/ad/2019-05-04): Main Rotor Blade · MD Helicopters 369A, 369D, 369E and 7 more. Effective Apr 17, 2019 - [AD 2016-05-09](https://openairdocs.org/ad/2016-05-09): Fuel Quantity Indicating System · MD Helicopters 369A, 369D, 369E and 7 more. Effective Apr 15, 2016 - [AD 2016-04-15](https://openairdocs.org/ad/2016-04-15): Main Rotor Blades · MD Helicopters 369A, 369D, 369E and 6 more. Effective Mar 31, 2016 - [AD 2013-19-24](https://openairdocs.org/ad/2013-19-24): Tail Rotor Blades · MD Helicopters 369A, 369D, 369E and 6 more. Effective Dec 5, 2013 - [AD 2008-15-03](https://openairdocs.org/ad/2008-15-03): Tail rotor (T/R) blade abrasion strip · MD Helicopters 369A, 369D, 369E and 6 more. Effective Sep 3, 2008 - [AD 2007-12-23](https://openairdocs.org/ad/2007-12-23): Landing gear fairing support assembly · MD Helicopters 369A, 369D, 369E and 7 more. Effective Jul 19, 2007 - [AD 2007-09-51](https://openairdocs.org/ad/2007-09-51): Tail rotor blade · MD Helicopters 369, 369A, 369D and 7 more. Effective Jul 5, 2007 - [AD 2000-25-52](https://openairdocs.org/ad/2000-25-52): Main rotor blade · MD Helicopters 369A, 369D, 369E and 6 more. Effective Feb 6, 2001 - [AD 98-15-26](https://openairdocs.org/ad/98-15-26): Main Rotor Blade Cracking Inspection · MD Helicopters 369A, 369D, 369E and 8 more. Effective Aug 3, 1998 - [AD 98-09-02](https://openairdocs.org/ad/98-09-02): Overrunning Clutch Assembly Outer Race · MD Helicopters 369, 369A, 369D and 8 more. Effective May 6, 1998 - [AD 96-10-09](https://openairdocs.org/ad/96-10-09): Blade Root End Crack Inspection · MD Helicopters 369, 369A, 369D and 8 more. Effective May 29, 1996 - [AD 95-03-13](https://openairdocs.org/ad/95-03-13): Main Rotor Blade Attach Lugs · MD Helicopters 369, 369A, 369D and 7 more. Effective Mar 21, 1995 - [AD 95-03-11](https://openairdocs.org/ad/95-03-11): Tail Rotor Bade Inspection · MD Helicopters 369, 369A, 369D and 7 more. Effective Mar 1, 1995 - [AD 93-07-10](https://openairdocs.org/ad/93-07-10): Airspeed Limitations · External cargo container (Gajon Associates STC SH1134EA). Effective Jul 6, 1993 - [AD 94-18-08](https://openairdocs.org/ad/94-18-08): Tail Rotor Blade Inspection · MD Helicopters 369, 369A, 369D and 7 more. Effective Jan 13, 1992 - [AD 91-08-02](https://openairdocs.org/ad/91-08-02): Tail Rotor Blades · MD Helicopters 369, 369A, 369D and 7 more. Effective May 3, 1991 - [AD 81-26-01 R1](https://openairdocs.org/ad/81-26-01-R1): Main Rotor Drive Shaft · MD Helicopters 369, 369A, 369D and 7 more. Effective Oct 31, 1990 - [AD 90-19-02](https://openairdocs.org/ad/90-19-02): Clutch Assembly · MD Helicopters 369, 369A, 369D and 7 more. Effective Oct 5, 1990 - [AD 90-01-08](https://openairdocs.org/ad/90-01-08): Driveshaft Coupling · MD Helicopters 369, 369A, 369D and 7 more. Effective Feb 5, 1990 - [AD 89-23-14](https://openairdocs.org/ad/89-23-14): Main Rotor Collective Tubes · MD Helicopters 369, 369A, 369D and 7 more. Effective Dec 4, 1989 - [AD 86-20-07](https://openairdocs.org/ad/86-20-07): Tail Rotor Drive Shaft · MD Helicopters 369, 369A, 369D and 5 more. Effective Oct 24, 1986 - [AD 86-01-04](https://openairdocs.org/ad/86-01-04): Tail Rotor Blades · MD Helicopters 369, 369A, 369D and 7 more. Effective Feb 14, 1986 - [AD 84-01-02 R1](https://openairdocs.org/ad/84-01-02-R1): Rotor System Control · MD Helicopters 369, 369A, 369D and 6 more. Effective Apr 9, 1984 - [AD 82-14-01](https://openairdocs.org/ad/82-14-01): With Chadwick C-20 Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE). Effective Jul 30, 1982 - [AD 82-01-08](https://openairdocs.org/ad/82-01-08): Lever Control Rod · MD Helicopters 369, 369A, 369D and 5 more. Effective Jan 7, 1982 - [AD 80-25-01](https://openairdocs.org/ad/80-25-01): Tail Rotor Drive Shaft · MD Helicopters 369, 369A, 369D and 4 more. Effective Dec 4, 1980 - [AD 80-24-04](https://openairdocs.org/ad/80-24-04): Placard -Front Seat Occupancy · MD Helicopters 369, 369A, 369D and 4 more. Effective Dec 4, 1980 - [AD 80-08-04](https://openairdocs.org/ad/80-08-04): Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE or SH139WE). Effective Apr 17, 1980 - [AD 78-26-04](https://openairdocs.org/ad/78-26-04): Tail Rotor Hub Assembly · Schweizer 269A, 269A-1, 269B and 6 more. Effective Dec 27, 1978 - [AD 77-21-04](https://openairdocs.org/ad/77-21-04): Clutch and Shaft Assembly · MD Helicopters 369, 369A, 369D and 4 more. Effective Aug 31, 1977 - [AD 76-19-03](https://openairdocs.org/ad/76-19-03): Damper plunger · MD Helicopters 369H, 369HE, 369HM and 1 more. Effective Sep 24, 1976 - [AD 75-22-03](https://openairdocs.org/ad/75-22-03): Tail Rotor Drive Shaft · MD Helicopters 369, 369A, 369H and 3 more. Effective Oct 24, 1975 - [AD 75-22-04](https://openairdocs.org/ad/75-22-04): Tail Rotor Blades · MD Helicopters 369, 369A, 369H and 3 more. Effective Oct 23, 1975 - [AD 75-10-04](https://openairdocs.org/ad/75-10-04): Tail Rotor Blades · MD Helicopters 369, 369A, 369H and 3 more. Effective Apr 17, 1975 - [AD 75-06-02](https://openairdocs.org/ad/75-06-02): Cargo Carriers · MD Helicopters 369HE, 369HM and 369HS with STC SH129WE or SH133WE. Effective Mar 28, 1975 - [AD 74-20-04](https://openairdocs.org/ad/74-20-04): Main Rotor Blade · MD Helicopters 369, 369A, 369H and 3 more. Effective Sep 25, 1974 - [AD 74-07-02](https://openairdocs.org/ad/74-07-02): Aluminum Tail Rotor Blades · MD Helicopters 369A, 369H, 369HE and 2 more. Effective Mar 26, 1974 - [AD 72-18-04](https://openairdocs.org/ad/72-18-04): VNE Limitations · MD Helicopters 369H, 369HE, 369HM and 1 more. Effective Aug 31, 1972 - [AD 70-16-07](https://openairdocs.org/ad/70-16-07): Main Rotor Blade · MD Helicopters 369, 369A, 369H and 3 more. Effective Aug 8, 1970 - [AD 69-21-01](https://openairdocs.org/ad/69-21-01): Failure of Input Pinion Shaft · Schweizer 269A, 269A-1, 269B and 4 more Historical (superseded or no longer in force): - [AD 2024-23-06](https://openairdocs.org/ad/2024-23-06) (historical): Rotorcraft Flight Control · MD Helicopters 369, 369A, 369D and 11 more. Effective Dec 24, 2024 - [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 2003-24-01](https://openairdocs.org/ad/2003-24-01) (historical): Main rotor blade (blade) · Replacement main rotor blade (Helicopter Technology STC SR09074RC or 2 others). Effective Dec 10, 2003 - [AD 2003-08-51](https://openairdocs.org/ad/2003-08-51) (historical): Tail rotor blade pitch horn (pitch horn) · MD Helicopter 369A, 369D, 369E and 6 more. Effective Jul 17, 2003 - [AD 2000-24-51](https://openairdocs.org/ad/2000-24-51) (historical): Blade Spar · MD Helicopter 369A, 369D, 369E and 6 more ## Registered aircraft (1) - [N822LJ](https://openairdocs.org/aircraft/N822LJ): [Caribe Helicopters Inc](https://openairdocs.org/faa-owner/CARIBE%20HELICOPTERS%20INC), [Coral Gables, FL](https://openairdocs.org/faa-place/FL/Coral%20Gables), built 1972, S/N 120367S ## STCs approved for it (178, first 50) - [STC SA2294SO](https://openairdocs.org/stc/SA2294SO): Installation of seat access panel in accordance with ALM Technologies, Inc., Drawing List, Document No. 3698001, dated August 21, 1987, or later FAA approved revision.. Enviro Systems Inc. - [STC SA2844CE (1 OF 2)](https://openairdocs.org/stc/SA2844CE%20(1%20OF%202)): Installation of a plastic cap enclosure over the anti-collision strobe light system.. Air Transport Inc - [STC SA5813NM](https://openairdocs.org/stc/SA5813NM): Installation of generator cooling kit.. WECO Inc - [STC SA615EA](https://openairdocs.org/stc/SA615EA): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights.. Whelen Aerospace Technologies - [STC SH1054EA](https://openairdocs.org/stc/SH1054EA): Installation of Garrett AiResearch environmental control system. (Carson Kit No. C500-10-50000).. Carson Helicopters Inc - [STC SH112GL](https://openairdocs.org/stc/SH112GL): Installation of Marathon CA1700-1 nickel cadmium storage battery.. Aero Quality Sales Co, Inc - [STC SH1134EA](https://openairdocs.org/stc/SH1134EA): Installation of external cargo container (pod) kit.. Gajon Associates, Ltd - [STC SH1142EA](https://openairdocs.org/stc/SH1142EA): Installation of APC starter- generator, P/N 150SG111Q, 150SG121Q, and 150SG124Q.. Shurka Aerospace Inc - [STC SH1152NW](https://openairdocs.org/stc/SH1152NW): Installation of the Automatic Flagman Model 135 Control Stick Grip. Air Products & Parts LLC - [STC SH115NE](https://openairdocs.org/stc/SH115NE): Installation of Casey shroud heater P/N 250-CCA-H500.. Tradewind Turbines - [STC SH1172SO](https://openairdocs.org/stc/SH1172SO): Installation of an AFE Model 3000 canopy defogger system.. Advanced Flight Engineering Inc - [STC SH1227SO](https://openairdocs.org/stc/SH1227SO): Installation of a wire strike protection system.. Bristol Aerospace Ltd - [STC SH123GL](https://openairdocs.org/stc/SH123GL): Installation of SAFT 1656-1 nickel cadmium electrical storage battery.. Aero Quality Sales Co, Inc - [STC SH129WE](https://openairdocs.org/stc/SH129WE): Installation of Chadwick C-20 auxiliary fuel system. (369HS (SN 0101 & subs), 369HE (SN 0101 & subs), 369HM (SN 0201 & subs), 369D (SN 033 & subs)). Phoenix Air-Atlanta - [STC SH132WE](https://openairdocs.org/stc/SH132WE): Installation of two side cargo racks. (369HS (SN 0101 & subsequent)) (369HE (SN 0101 & subsequent)) (369HM (SN 0201 & subsequent)). Columbia Helicopters Inc - [STC SH133WE](https://openairdocs.org/stc/SH133WE): Installation of C-75 cargo rack set.. Isolair Inc. - [STC SH1383SO](https://openairdocs.org/stc/SH1383SO): Manufacture of Nightscanner searchlight kit.. Bell Helicopter Textron Inc. - [STC SH155WE](https://openairdocs.org/stc/SH155WE): Installation of battery temperature monitor system.. K S Avionics, Inc - [STC SH1626SO](https://openairdocs.org/stc/SH1626SO): Installation of rain gutters over pilot and passenger doors.. Bell Helicopter Textron Inc. - [STC SH1657SW](https://openairdocs.org/stc/SH1657SW): Full length, hard surface, skid shoes on standard skid landing gear.. Northrop Worldwide Aircraft - [STC SH1681NM](https://openairdocs.org/stc/SH1681NM): Installation of a Simplex Model 5500 Spray system. Simplex Manufacturing Company - [STC SH1834NM](https://openairdocs.org/stc/SH1834NM): Installation of Silver Instrument Fueltron IPT-IGS, IPT-IPS IPT-ILS, or IPT-IKS digital fuel flow indicating system.. Arnav Systems Inc - [STC SH183WE](https://openairdocs.org/stc/SH183WE): Installation of turbine overtemperature warning system.. MRSC Incorporated - [STC SH1871NM](https://openairdocs.org/stc/SH1871NM): Installation of Teledyne-Gill P/N G-641 lead acid battery.. Heli-Dyne, Inc - [STC SH189WE](https://openairdocs.org/stc/SH189WE): Installation of searchlight kit.. Gerbino Flight Systems - [STC SH190WE](https://openairdocs.org/stc/SH190WE): Installation of P.A. speaker kit.. Gerbino Flight Systems - [STC SH201WE](https://openairdocs.org/stc/SH201WE): Installation of stirrup assemblies to directional control pedals for operation by handicapped pilot. (US ARMY OH-13E 205A). Dallwig Barry C - [STC SH207WE](https://openairdocs.org/stc/SH207WE): Installation of range extension fuel tank in cargo area.. ROBERTSON FUEL SYSTEMS LLC - [STC SH214WE](https://openairdocs.org/stc/SH214WE): Installation of external neutron detector moduel and associated cockpit displays.. E G & G, Incorporated - [STC SH215WE](https://openairdocs.org/stc/SH215WE): Installation of tail floodlights on fuselage.. DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SH2250NM](https://openairdocs.org/stc/SH2250NM): Installation of 36-inch main rotor blade leading edge abrasion strips.. Composite Technology, Inc - [STC SH2288NM](https://openairdocs.org/stc/SH2288NM): Installation of Spectrolab SX-16C nightsun searchlight.. Gerbino Flight Systems - [STC SH236WE](https://openairdocs.org/stc/SH236WE): Installation of searchlight.. Carter Engineering, Inc - [STC SH2372SO](https://openairdocs.org/stc/SH2372SO): Modify the gearbox breather system.. Rotor Wing, Inc - [STC SH2400SO](https://openairdocs.org/stc/SH2400SO): Installation of quick mount kit for FLIR Systems Inc. Model2000/2500 series thermal imager on the cargo hook mount point.. Bell Helicopter Textron Inc. - [STC SH242NW](https://openairdocs.org/stc/SH242NW): Installation of battery in Hughes369HS helicopter to replace original.. Keefer Aircraft Engineer - [STC SH250WE](https://openairdocs.org/stc/SH250WE): Installation of a P.A. speaker kit.. Allen J Gerbino, Gerbino Flight Systems - [STC SH2530NM](https://openairdocs.org/stc/SH2530NM): Installation of quick removal door hinges.. Gerbino Flight Systems - [STC SH2543SO](https://openairdocs.org/stc/SH2543SO): Installation of FLIR Systems, Inc. Model 2000/2500/3000 Series Thermal Imager System on Aeronautical Accessories, Inc. Nose Quick Mount & IDP Mount Kits. Bell Helicopter Textron Inc. - [STC SH2544SO](https://openairdocs.org/stc/SH2544SO): Installation of FLIR monitor mount.. Bell Helicopter Textron Inc. - [STC SH2554NM](https://openairdocs.org/stc/SH2554NM): Installation of Modified front window canopy.. The NORDAM Group LLC - [STC SH2735NM](https://openairdocs.org/stc/SH2735NM): Installation of pneumatic door actuators.. Dart Aerospace USA Inc. - [STC SH281WE](https://openairdocs.org/stc/SH281WE): Installation of VIP single passenger seats.. Gerbino Flight Systems - [STC SH2913NM](https://openairdocs.org/stc/SH2913NM): Install Soft Terrain Pads on helicopter skid gear. Standard Helicopter Corp - [STC SH2926SO](https://openairdocs.org/stc/SH2926SO): Installation of an Inframetrics Model IRTV-445 FLIR on a forward quick mount kit.. Bell Helicopter Textron Inc. - [STC SH2927SO](https://openairdocs.org/stc/SH2927SO): Installation of an Istec/Wescam Model 104/12 camera on a forward quick mount kit.. Bell Helicopter Textron Inc. - [STC SH2935SO](https://openairdocs.org/stc/SH2935SO): Installation of an SX-16 Nightsun searchlight on a forward quick mount kit.. Bell Helicopter Textron Inc. - [STC SH295NM](https://openairdocs.org/stc/SH295NM): Installation of Hoskins Model CFS-1002 computerized fuel flow indicating system.. Sandia Aerospace Corporation - [STC SH299NM](https://openairdocs.org/stc/SH299NM): Modification of gears and shafts.. San Diego Helicopter Service, Inc. - [STC SH3028SO](https://openairdocs.org/stc/SH3028SO): Installation of SX-5 searchlight on a forward quick-mount kit.. Bell Helicopter Textron Inc. All 178: https://openairdocs.org/model/summa-369hs/stcs.md ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (30) As reported by operators and repair stations, by the model named in the report. - [SDR 2025FA0000782](https://openairdocs.org/sdr/2025FA0000782), Nov 25, 2025: FILLER. CORRODED. AIRCRAFT REG: N396HA, AIRCRAFT MSN 1488. BULK CARGO DOOR ENTRANCE CUTOUT LOWER EDGE FILLER FOUND WITH 4 OFF LOCATION CORRODED. MEASURING 30X15MM, 25X10MM,20X20M - [SDR 2011FA0000051](https://openairdocs.org/sdr/2011FA0000051), Oct 1, 2010: SPAR. CRACKED. 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. TH - [SDR 2010FA0001107](https://openairdocs.org/sdr/2010FA0001107), Sep 24, 2010: SEAL. MISSING. 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 INSP - [SDR 2010FA0000822](https://openairdocs.org/sdr/2010FA0000822), May 5, 2010: ANTI-ICE VALVE. UNSECURE. 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 I - [SDR CA070201008](https://openairdocs.org/sdr/CA070201008), Jan 27, 2007: FCU. FAILED. (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 IN - [SDR CA020719003](https://openairdocs.org/sdr/CA020719003), Mar 13, 2002: BEARING. FAILED. (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 A - [SDR AUS20020115](https://openairdocs.org/sdr/AUS20020115), Jan 18, 2002: BEARING. CRACKED. (AUS) MAIN TRANSMISSION BEARING INNER RACE SPLIT WITH HEAVY BRINNELLING EVIDENT. METAL CONTAMINATION OF TRANSMISSION OIL SYSTEM. - [SDR AUS20011238](https://openairdocs.org/sdr/AUS20011238), Nov 14, 2001: BLADE. FAILED. (AUS) SECOND STAGE COMPRESSOR BLADES (2OFF) FAILED). MAJOR DOWNSTREAM DAMAGE. SEVERAL OTHER SECOND STAGE ROTOR BLADES WERE FOUND TO BECRACKED FROM THE TRAILING - [SDR AUS20010925](https://openairdocs.org/sdr/AUS20010925), Aug 24, 2001: SHAFT. DISTORTED. (AUS) TAIL ROTOR GEARBOX OUTPUT SHAFT BEARINGS BREAKING UP AND SHAFTRUNOUT EXCESSIVE. SHAFT RUNOUT APPROXIMATELY 0.457MM (0.018IN). MAXIMUM RUNOUT 0.0254MM (0.0 - [SDR CA010621026](https://openairdocs.org/sdr/CA010621026), May 24, 2001: PULLEY. FAILED. (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 - [SDR 20000412SH028](https://openairdocs.org/sdr/20000412SH028), Mar 7, 2000: PROBE. DAMAGED. 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 INSPEC - [SDR 99ZZZX1473](https://openairdocs.org/sdr/99ZZZX1473), Mar 19, 1999: VALVE. BROKEN. 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), Aug 1, 1998: BLADE. CRACKED. 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 - [SDR CA980804009](https://openairdocs.org/sdr/CA980804009), Jul 16, 1998: FAN. WRONG PART. (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), Mar 9, 1998: CASE HALF. ERODED. 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 WA - [SDR 97ZZZX4860](https://openairdocs.org/sdr/97ZZZX4860), Oct 3, 1997: DOOR. DEPARTED. 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 - [SDR 97ZZZX3993](https://openairdocs.org/sdr/97ZZZX3993), Aug 20, 1997: BLADE. CRACKED. 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 SI - [SDR 97ZZZX2835](https://openairdocs.org/sdr/97ZZZX2835), May 2, 1997: BEARING. CRACKED. OVERRUNNING CLUTCH BEARING OUTER RACE IS CRACKED. - [SDR 97ZZZX1669](https://openairdocs.org/sdr/97ZZZX1669), Mar 24, 1997: BEARING. FAILED. 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 - [SDR AU970163](https://openairdocs.org/sdr/AU970163), Feb 19, 1997: BLADE. CRACKED. (AUS) TAIL ROTOR BLADE SKIN CRACKED IN AREA JUST INBOARD OF THE LEADING EDGE PROTECTIVE STRIP RUNNING CHORDWISE TOWARDS THE TRAILING EDGE - CRACK LENGTH APPROXI - [SDR AU970120](https://openairdocs.org/sdr/AU970120), Feb 19, 1997: BLADE. CRACKED. (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 - CRA - [SDR 97ZZZX200](https://openairdocs.org/sdr/97ZZZX200), Nov 29, 1996: SWASHPLATE. BUSHING DETACHED. 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 - [SDR 96ZZZX4103](https://openairdocs.org/sdr/96ZZZX4103), Jul 26, 1996: PULLEY ASSY. BOTTOM OUT. 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 - [SDR 96ZZZX3839](https://openairdocs.org/sdr/96ZZZX3839), Jun 11, 1996: LINK ASSY. BUSHING LOOSE. 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 - [SDR 96ZZZX3836](https://openairdocs.org/sdr/96ZZZX3836), Jun 10, 1996: PINION SHAFT. WORN. 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 TH - [SDR AU960192](https://openairdocs.org/sdr/AU960192), Feb 15, 1996: HOUSING. CORRODED. (AUS) STABILIZER STRUT DAMPER SHAFT PULLED FROM FITTING DURING HEAVY VIBRATION FOLLOWING TAIL ROTOR DRIVE SHAFT FAILURE (MDR 96/0191) - FITTING EXHIBITED SIGNS - [SDR AU960191](https://openairdocs.org/sdr/AU960191), Feb 15, 1996: DRIVE SHAFT. SHEARED. (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 - [SDR CA960116010](https://openairdocs.org/sdr/CA960116010), Nov 20, 1995: FCU. FAILURE. (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 - [SDR 95ZZZX6348](https://openairdocs.org/sdr/95ZZZX6348), Nov 9, 1995: BOLT. WRONG PART. 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 O - [SDR 95ZZZX1316](https://openairdocs.org/sdr/95ZZZX1316), Jan 30, 1995: STRUT ASSY. CRACKED. 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 A ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Hughes 369HS](https://openairdocs.org/model/hughes-369hs): 69 registered aircraft, registry code 4470728 - [MD Helicopters 369HS](https://openairdocs.org/model/md-helicopters-369hs): 3 registered aircraft, registry code 3030012 --- 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.