# Kawasaki BK 117B-1 - Type: Aircraft model (FAA registry) - Registry code: 4820102 - Manufacturer (registry): KAWASAKI - Model: BK 117B-1 - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 2 ยท Turbo-jet - Seats: 9 - Weight class: Up to 12,499 lb - Certification: Not type certificated - Registered aircraft: 0 - Page: https://openairdocs.org/model/kawasaki-bk-117b-1 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. None matched. ## Registered aircraft None registered with this model now. ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (822, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR QMLA2024070120080](https://openairdocs.org/sdr/QMLA2024070120080), Jun 26, 2024: FLT CONTROLS. MALFUNCTIONED. AIRCRAFT WAS APPROX 10NM OF KDOV, AT AN ALTITUDE OF 1000-1100 MSL, AIRSPEED WAS ABOUT 130KIAS. CRUISE TORQUE WAS SET TO APPROXIMATELY 65%. PILOT HEARD A CHANGE - [SDR QMLA2024052820055](https://openairdocs.org/sdr/QMLA2024052820055), May 28, 2024: COMPUTER. UNSERVICEABLE. ON CLIMB-OUT FROM BASE, PASSING THROUGH ABOUT 600FT MSL, THE ROLL SAS CAUTION LIGHT ILLUMINATED ON THE COCKPIT DASH. THIS WAS ACCOMPANIED BY A WOBBLE IN THE ROL - [SDR QMLA2023121520114](https://openairdocs.org/sdr/QMLA2023121520114), Dec 15, 2023: UNKNOWN. UNKNOWN. ON CLIMB OUT FOR AN INTERFACILITY TRANSFER, A SMELL OF FUEL WAS REPORTED BY THE MEDICAL CREWMEMBER IN THE CABIN. A FAINT SMELL COULD BE DETECTED IN COCKPIT. AS - [SDR QMLA2023032720020](https://openairdocs.org/sdr/QMLA2023032720020), Mar 27, 2023: UNKNOWN. UNKNOWN. LIFTED FROM SENDING FACILITY WITH PATIENT ON BOARD. UPON REACHING TDP APPROXIMATLEY 100FT AGL ROTATED AND BEGAN A CLIMB. SHORTLY AFTER ROTATION ENG CHIP FOR #1 - [SDR HDNA20230222001](https://openairdocs.org/sdr/HDNA20230222001), Feb 21, 2023: SWASHPLATE. CRACKED. DURING THE PERFORMANCE OF A DAILY AIRWORTHINESS CHECK THE MAIN ROTOR SWASHPLATE SUPPORT WAS FOUND CRACKED. CRACKS ARE NOT ALLOWED ON THIS COMPONENT. - [SDR QMLA2017091017089](https://openairdocs.org/sdr/QMLA2017091017089), Sep 10, 2017: STARTER GEN. FAILED. WHILE IN CRUISE FLIGHT RETURNING FROM INTER FACILITY TRANSPORT THE NR 1 GENERATOR FAILED. BUS TIE WAS COMPLETE. THE GEN FAIL EMERGENCY PROCEDURE WAS FOLLOWED AN - [SDR M7FR170101](https://openairdocs.org/sdr/M7FR170101), Feb 13, 2017: STRUCTURE. CORRODED. DURING PERIODICAL INSPECTION, IT WAS DISCOVERED THAT THE HORIZONTAL STABILIZER HAD SOME AREAS OF SUSPECTED SEVERE CORROSION. THE STABILIZER WAS REMOVED AND SENT - [SDR QMLA2015121815111](https://openairdocs.org/sdr/QMLA2015121815111), Dec 18, 2015: UNKNOWN. ODOR. ON RUN UP AT IDLE, THE CREW SMELLED A BURNING ODOR, NEAR RT AFT SEAT & COPILOT SEAT. INVESTIGATED & COULD NOT DUPLICATE ANY ODOR. LOOKED FOR SIGNS OF ELEC COMPO - [SDR HDNA20150413002](https://openairdocs.org/sdr/HDNA20150413002), Apr 11, 2015: COWL LATCH. MISMANUFACTURED. AFTER REPLACING SEVERAL BROKEN NR 2 SIDE HYD LATCH HOOKS WITH AN UNREASONABLE SHORT FREQUENCY. TOOK BROKEN HOOK TO NDI SPECIALIST & INFORMED THAT LATCH WAS IMPR - [SDR QMLA2014121414139](https://openairdocs.org/sdr/QMLA2014121414139), Dec 14, 2014: TRANSPONDER. MALFUNCTIONED. THE PILOT DETECTED AN ELEC BURNING SMELL IN THE COCKPIT ON APPROACH. ONCE ON THE GND, HE CALLED IN THE MECHANIC TO INSPECT THE ACFT. FOUND THAT THE TRANSPONDER - [SDR QMLA2014051514054](https://openairdocs.org/sdr/QMLA2014051514054), May 15, 2014: STRINGER. UNSERVICEABLE. DURING C 0872 INSPECTION OF ACFT BATTERY, FOUND CHAFING ON OMEGA STRINGER ON TAIL BOOM BEHIND AFT BATTERY INSTALLATION. FURTHER INSPECTION ESTABLISHED THIS DAMA - [SDR QMLA2014040814033](https://openairdocs.org/sdr/QMLA2014040814033), Apr 8, 2014: BRACKET. CRACKED. THE MECHANIC REPORTED FINDING AN AIRFRAME BRACKET CRACKED UNDER THE NR 1 FUEL PUMP ASSEMBLY ON THE MAIN TRANSMISSION DECK. THIS ACFT REMAINS OUT OF SERVICE AT T - [SDR QMLA201403214030](https://openairdocs.org/sdr/QMLA201403214030), Mar 25, 2014: DRAIN. STUCK. FUEL ODOR WHEN CABIN HEAT TURNED ON. - [SDR QMLA2014021814016](https://openairdocs.org/sdr/QMLA2014021814016), Feb 18, 2014: UNKNOWN. MALFUNCTIONED. WHILE IN CRUISE FLIGHT SHORTLY AFTER TAKEOFF FROM THE SENDING HOSPITAL WITH A PATIENT ONBOARD, THE PILOT EXPERIENCED A HYD 2 CAUTION LIGHT & A REDUCTION IN INDI - [SDR QMLA2014011014004](https://openairdocs.org/sdr/QMLA2014011014004), Jan 15, 2014: FRAME. CRACKED. TAIL CONE LT OUTER FRAME CRACKED. - [SDR QMLA2013110713161](https://openairdocs.org/sdr/QMLA2013110713161), Nov 7, 2013: UNKNOWN. ODOR. DURING LANDING, ODOR OF SMOKE IN COCKPIT AND THEN CENTER PANEL LIGHTS WENT OUT. INSPECTION FOUND NO DAMAGED WIRES. PANEL LIGHTING DIMMERS WERE INSPECTED AND SHO - [SDR QMLA2013092013136](https://openairdocs.org/sdr/QMLA2013092013136), Sep 20, 2013: DOUBLER. CRACKED. FWD "ECU" MOUNT WAS LOOSE WITH BLIND FASTNERS MISSING. REMOVED THE FWD MOUNT AND FOUND A 40MM LONG CRACK UNDER THE MOUNT ON THE TAIL CONE DOUBLER, PN 117-22130, - [SDR QMLA2012111912186](https://openairdocs.org/sdr/QMLA2012111912186), Nov 19, 2012: GUIDE. CRACKED. A ONE INCH CRACK ON THE AFT END OF RT GUIDE RAIL FOR THE CREST COWLING ON THE TOP OF THE FUSELAGE LOCATION WATER LINE 2900 MM, BUTTLINE RT 300MM AND STATION 400 - [SDR QMLA2012080312125](https://openairdocs.org/sdr/QMLA2012080312125), Aug 3, 2012: LINE. RUPTURED. DURING CRUISE, DETECTED A BURNING ODOR. SMOKE ENTERED COCKPIT FROM ABOVE. DECLARED AN EMERGENCY. SMELLING A SWEET ODOR AND CREW REPORTED HYDRAULIC FLUID COMING - [SDR 2A6R2012062929101](https://openairdocs.org/sdr/2A6R2012062929101), Jun 29, 2012: SHAFT. SHEARED. AFTER LANDING FROM A HOVER, WHILE PERFORMING MAIN ROTOR TRACK AND BALANCE, THE PILOT REPORTED NR 2 ENGINE OIL TEMPERATURE WAS CLIMBING TO YELLOW ZONE. MX INVEST - [SDR 2A6R2012060700001](https://openairdocs.org/sdr/2A6R2012060700001), Jun 6, 2012: ROTOR SHAFT. CRACKED. UPON INSTALLATION OF MAIN ROTOR TRANSMISSION - EXCESSIVE VERTICAL PLAY WAS NOTED. UPON WITHDRAWL OF ROTOR MAST FROM GEARBOX FOR SPACER TUBE INSPECTION, A CRACK - [SDR QMLA2012052612089](https://openairdocs.org/sdr/QMLA2012052612089), May 26, 2012: TRANSMISSION. MAKING METAL. TRANSMISSION CHIP CAUTION ILLUMINATED 100' FROM BASE HELIPAD DURING APPROACH FOR LANDING. ACTIVATED CHIP PULSE SEVERAL TIMES AFTER LANDING AND DURING SHUTDOWN. - [SDR QMLA2012051612082](https://openairdocs.org/sdr/QMLA2012051612082), May 16, 2012: GUIDE. OUT OF ADJUST. LEFT CREW SLIDING DOOR AFT LOWER CATCH WAS DISENGAGED FROM THE ACFT. ADJUSTED CATCH AND REINSTALLED DOOR. NO DAMAGE TO COMPONENT OR ACFT OCCURRED. LANDED. - [SDR QMLA2012041212058](https://openairdocs.org/sdr/QMLA2012041212058), Apr 12, 2012: O-RING. FAILED. CREW REPORTED SENSING A STRONG ODOR OF FUEL IN CABIN ON THE RETURN LEG TO THE BASE FOLLOWING A REFUELING STOP. ON LANDING AT BASE THE ODOR HAD DISSIPATED. INSPE - [SDR QMLA2012040912055](https://openairdocs.org/sdr/QMLA2012040912055), Apr 9, 2012: FITTING. CRACKED. PILOT REPORT NR 2 ENGINE OIL LEAK. CLEANED AREA AND DETERMINED THAT OIL LEAK WAS FROM CRACKED OIL RETURN LINE FITTING. FITTING REPLACED. - [SDR QMLA2012022712031](https://openairdocs.org/sdr/QMLA2012022712031), Feb 27, 2012: ENGINE. MAKING METAL. ACFT HAD TWO MINOR, NR 2 ENGINE CHIP LIGHT EVENTS, EACH INVOLVING A FEW SMALL OR "LIGHT" CLASSIFIED PARTICLES ON THE FULL FLOW CHIP DETECTOR ONLY. EACH TIME THE - [SDR QMLA2012020112016](https://openairdocs.org/sdr/QMLA2012020112016), Feb 1, 2012: UNKNOWN. ODOR. JUST AFTER TAKEOFF, SMELLED FUEL THROUGHOUT THE CABIN. IMMEDIATELY ABORTED THE FLIGHT AND RETURNED TO BASE. PERFORMED A THOROUGH INSPECTION OF ACFT, NO DEFECTS - [SDR 2011FA0000625](https://openairdocs.org/sdr/2011FA0000625), Sep 21, 2011: INDICATOR. DAMAGED. DME READABILITY IS MARGINAL. CO-PILOTS MASTER CAUTION LIGHT BARELY VISIBLE WHEN LIT. MAST MOMENTS WARNING LIGHT IS BARELY VISIBLE WHEN LIT AND TEH COLOR OF LLIG - [SDR 2011FA0000620](https://openairdocs.org/sdr/2011FA0000620), Sep 21, 2011: LIGHT. MALFUNCTIONED. CO-PILOTS MASTER CAUTION LIGHT BARELY VISIBLE WHEN LIT. MAST MOMENTS WARNING LIGHT IS BARELY VISIBLE WHEN LIT AND THE COLOR OF THE LIGHT HAS BEEN CHANGED FROM " - [SDR 2011FA0000618](https://openairdocs.org/sdr/2011FA0000618), Sep 21, 2011: INDICATOR. DAMAGED. DME UNREADABLE. CO-PILOTS MASTER CAUTION LIGHT BARELY VISIBLE WHEN LIT. DH LIGHT ON RADAR ALTIMETER IS INTERMITTENT AND BARELY VISIBLE WHEN LIT. MAST MOMENT WAR - [SDR UOHR2011009](https://openairdocs.org/sdr/UOHR2011009), Mar 8, 2011: SPAR. CRACKED. DURING MAJOR INSPECTIONS A CRACK WAS DISCOVERED ON THE TAILBOOM AT THE 10L FRAME ON THE SUPPORT ANGLE (PN 105-30251.44) SPLICE DOUBLER. THERE IS ALSO A CRACK IN - [SDR QMLA2011012811020](https://openairdocs.org/sdr/QMLA2011012811020), Jan 29, 2011: TERMINAL. BROKEN. ON LANDING, ACFT PITCHED UP AND DOWN WITH NO PILOT CONTROL MOVEMENT AND CSAS PITCH LIGHT CAME ON. TROUBLESHOOTING AND INSP FOUND WIRE TERMINAL AT TB811 BROKEN. - [SDR QMLA2010102410069](https://openairdocs.org/sdr/QMLA2010102410069), Oct 24, 2010: FILLERCAP. MISSING. WHILE IN FORWARD FLIGHT, CREW DETECTED STRONG ODOR OF FUEL. AFTER AN UNSCHEDULED LANDING AND VISUAL INSPECTION OF ACFT FOUND THAT THE FUEL FILLER CAP WAS MISSIN - [SDR QMLA2010101010066](https://openairdocs.org/sdr/QMLA2010101010066), Oct 10, 2010: WINDOW. MISSING. RT AFT CABIN DOOR SLIDING WINDOW WAS FOUND TO BE MISSING AT SHIFT CHANGE WALK AROUND BY PILOTS. LOCATION AND TIME OF WINDOW DEPARTING THE ACFT IS UNKOWN. CREW D - [SDR QMLA2010081110049](https://openairdocs.org/sdr/QMLA2010081110049), Aug 10, 2010: WARNING LIGHT. FALSE ACTIVATION. ON SECOND LEG OF PATIENT FLIGHT, THE NR 2 HYD WARNING LIGHT ILLUMINATED ALONG WITH PRESSURE GAUGE INDICATION FLUCTUATION BETWEEN 0 AND 40 BAR. INSPECTED DUAL HY - [SDR QMLA2001070610029](https://openairdocs.org/sdr/QMLA2001070610029), Jul 6, 2010: GYRO. FAILED. 5 MIN AFTER TAKEOFF, BASE CALLED AND SAID OUTERLINK WAS NOT TRACKING . THEN 15 MIN AFTER THE CALL FROM BASE, IT WAS NOTED, A SMELL OF SMOKE IN THE COCKPIT. STAN - [SDR QMLA2010051810015](https://openairdocs.org/sdr/QMLA2010051810015), May 18, 2010: WIRE. CHAFED. WIRE 1PB2 IN OVERHEAD CIRCUIT BREAKER PANEL WAS FOUND TO HAVE INSULATION CHAFED IN SEVERAL LOCATIONS. ONE LOCATION IS CHAFED THROUGH EXPOSING THE CONDUCTOR. A C - [SDR RMXA022220107217](https://openairdocs.org/sdr/RMXA022220107217), Feb 22, 2010: GUIDE. WORN. DURING FLIGHT, A CREWMEMBER NOTICED A GAP ON THE LOWER EDGE OF THE RT SLIDING DOOR. AN UNSCHEDULED LANDING WAS PERFORMED & THE DOOR WAS SECURED. FLIGHT CONTINUE - [SDR 2010F00012](https://openairdocs.org/sdr/2010F00012), Jan 20, 2010: FLOOR SKIN. CRACKED. AFTER REMOVAL OF NR 1 ENGINE, FOUND THE FIRE EXTINGUISHER TUBE HAD CHAFED THROUGH THE ENGINE DECK SKIN 130MM LONG 5MM WIDE AND A 34MM CRACK IN THE MIDDLE. - [SDR 2010F00011](https://openairdocs.org/sdr/2010F00011), Jan 20, 2010: MAST. CORRODED. AFTER MAIN ROTOR HEAD WAS REMOVED FOR OTHER MX, THE MAST WAS FOUND TO HAVE CORROSION ON THE MATING SURFACE AND AROUND MOUNTING BORES. - [SDR QMLA2010011610001](https://openairdocs.org/sdr/QMLA2010011610001), Jan 16, 2010: FITTING. CRACKED. DURING INSP OF TAIL ROTOR GEARBOX CHIP DETECTOR DISCOVERED CRACK IN VERTICAL FIN NOSE RIB AT TAIL ROTOR GEARBOX ATTACHMENT POINT. FURTHER INVESTIGATION REVEALED - [SDR RMXA011520107211](https://openairdocs.org/sdr/RMXA011520107211), Jan 15, 2010: CONNECTOR. DIRTY. DURING PILOT TRAINING, THE NR 2 ENGINE OIL PRESSURE FLUCTUATED THEN REMAINED BELOW MINIMUM ALLOWABLE LEVEL. THE ENGINE WAS SHUTDOWN IN FLIGHT AND A UNSCHEDULED - [SDR RMXA011120107144](https://openairdocs.org/sdr/RMXA011120107144), Jan 11, 2010: WARNING LIGHT. FALSE ACTIVATION. DURING START-UP PRIOR TO TAKEOFF, THE NR 2 ENGINE CHIP INDICATOR WARNING LIGHT ILLUMINATED. ENGINE WAS SHUTDOWN & TAKEOFF ABORTED. TECH FOUND NO DEBRIS ON DETEC - [SDR QMLA2009120309046](https://openairdocs.org/sdr/QMLA2009120309046), Dec 3, 2009: FITTING. CRACKED. DURING ACFT AIRWORTHINESS INSP, DISCOVERED CRACK IN VERTICAL FIN NOSE RIB AT TAIL ROTOR GEARBOX ATTACHMENT POINT. FURTHER INVESTIGATION REVEALED THAT TAIL ROTOR - [SDR QMLA2009102209034](https://openairdocs.org/sdr/QMLA2009102209034), Oct 22, 2009: FITTING. CRACKED. T/R GEARBOX CASTING CRACKED, DISCOVERED DURING ROUTINE ZONE INSPECTION. T/R GBX FITTING HAD BEEN REPLACED FOR A SIMILAR CRACK 832 HRS PRIOR. - [SDR RMXA091420097206](https://openairdocs.org/sdr/RMXA091420097206), Sep 14, 2009: SPLICE. CRACKED. DURING A SCHEDULED INSPECTION, THE RT TAILCONE SPLICE PN 117-22132-02 ATTACHED TO THE UPPER FUSELAGE STRUCTURE WAS DISCOVERED CRACKED.THE TAILCONE SPLICE WAS RE - [SDR QMLA2009081109026](https://openairdocs.org/sdr/QMLA2009081109026), Aug 11, 2009: LOCK. UNSERVICEABLE. FELT CYCLIC POP IN VERTICAL DIRECTION AT THE BOTTOM OF A SIMULATED SINGLE ENGINE LANDING FROM AN ABORTED MAXIMUM PERFORMANCE TAKEOFF PROFILE. AFTER LANDING, WAS - [SDR RMXA080520097211](https://openairdocs.org/sdr/RMXA080520097211), Aug 5, 2009: FRAME. CRACKED. DURING A SCHEDULED TAILBOOM VERTYICAL FIN INSPECTION, A 2" LONG CRACK WAS DISCOVERED IN THE TAILBOOM FRAME 11.THE CRACK WAS STOP DRILLED, A REPAIR SCHEME WAS RE - [SDR RMXA080420097217](https://openairdocs.org/sdr/RMXA080420097217), Aug 4, 2009: SKIN. CRACKED. DURING A DAILY INSPECTION, A 2.5" LONG CRACK WAS DISCOVERED ON THE LT TAILBOOM SKIN STARTING AT THE FORWARD END OF THE OPENING FOR THE HORIZONTAL STABILIZER. CR - [SDR RMXA062620097217](https://openairdocs.org/sdr/RMXA062620097217), Jun 26, 2009: BLADE. DEBONDED. DURING FLIGHT, A NOISE WAS HEARD IN THE MAIN ROTOR SYS, FOLLOWED BY A VIBRATION THAT INCREASED. A PRECAUTIONARY LANDING WAS PERFORMED. FOUND EROSION TAPE HAD SE All 822: https://openairdocs.org/model/kawasaki-bk-117b-1/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Messerschmitt BK 117 B-1](https://openairdocs.org/model/messerschmitt-bk-117-b-1): 3 registered aircraft, registry code 5626012 - [Messerschmitt Bolkow Blohm BK117 B-1](https://openairdocs.org/model/messerschmitt-bolkow-blohm-bk117-b-1): 0 registered aircraft, registry code 5626033 --- 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.