# Kawasaki BK117C-1 - Type: Aircraft model (FAA registry) - Registry code: 4820105 - Manufacturer (registry): KAWASAKI - Model: BK117C-1 - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 2 ยท Turbo-shaft - Seats: 12 - Weight class: Up to 12,499 lb - Certification: Not type certificated - Registered aircraft: 0 - Page: https://openairdocs.org/model/kawasaki-bk117c-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 (387, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2025F00098](https://openairdocs.org/sdr/2025F00098), Apr 22, 2025: STIFFENER. CRACKED. INSTRUMENT PANEL STIFFENER CRACKED - [SDR 2025F00097](https://openairdocs.org/sdr/2025F00097), Apr 22, 2025: DECK PLATE. CRACKED. TRANSMISSION DECK BEAM CRACKED. - [SDR 3GMA2024120304](https://openairdocs.org/sdr/3GMA2024120304), Nov 29, 2024: UNKNOWN. ODOR. CREW NOTED STRONG FUEL SMELL IN FLIGHT. RETURNED TO BASE. - [SDR HDNA2024040001](https://openairdocs.org/sdr/HDNA2024040001), Apr 14, 2024: BLOWER. BINDING. PILOT AND MEDICAL STAFF REPORTED A LOUD SOUND AND SUBSEQUENTLY SMELLED SMOKE. PILOT NOTED THAT THE AIRCONDITIONING SYSTEM WAS NO LONGER BLOWING AND THE C/B WAS - [SDR 2019FA0000131](https://openairdocs.org/sdr/2019FA0000131), Apr 21, 2019: VENT LINE. LOOSE. FUEL SMELL NOTICEABLE IN CABIN, DURING FLIGHT. INSPECTED, FOUND EXPANSION TANK VENT LINE LEAKING AT FITTING. INSPECTED AND REPAIRED LINE, AS REQUIRED. NO OTHER - [SDR GVNA201904230179](https://openairdocs.org/sdr/GVNA201904230179), Apr 17, 2019: PRESSURE SWITCH. FAILED. NR 1 ENG FUEL PRESSURE LIGHT ILLUMINATED DURING FLIGHT/APPROACH. REPLACED LOW FUEL PRESSURE SWITCH WITH SERVICEABLE PART. PERFORMED GROUND RUN/LK CHK. CHK'D GOO - [SDR GVNA201904170170](https://openairdocs.org/sdr/GVNA201904170170), Oct 23, 2018: PACKING. FAILED. AFTER PATIENT LOADING, DURING FINAL WALK AROUND, MED CREW NOTICED FUEL LEAKING FROM #2 ENGINE. MECHANIC, UPON FURTHER INSPECTION, FOUND FUEL SHUTOFF VALVE LEAKI - [SDR 2016F00179](https://openairdocs.org/sdr/2016F00179), Sep 2, 2016: OVRSPEED LIMITER. ACTIVATED. NR 2 ENGINE SHUTDOWN IN FLIGHT DURING TRAINING DUE TO A TRIPPING OF THE NR 2 OVER SPEED PROTECTION BOX. PILOTS VERIFIED VISUALLY THAT THERE WAS NO OVERSPEED THA - [SDR HDNA20160210001](https://openairdocs.org/sdr/HDNA20160210001), Feb 10, 2016: ANGLE. CRACKED. DURING SCHEDULED INSPECTIONS CRACKS WERE FOUND IN THE TAIL CONE AT STATION 6616, LOWER AREA. REPLACED FRAME ANGLE 117-22122-001 02-100 & INSTALLED REPAIR LIT 11 - [SDR HDNA2015F00104](https://openairdocs.org/sdr/HDNA2015F00104), Aug 31, 2015: STRUCTURE. CORRODED. CRACK AND CORROSION FOUND BETWEEN L1 AND L2 FRAMES LOCATED IN THE FUSELAGE CEILING. - [SDR QMLA2014121314141](https://openairdocs.org/sdr/QMLA2014121314141), Dec 13, 2014: WARNING SYSTEM. ACTIVATED. EVENT OCCURRED WHILE INFLIGHT AT 8000'. ON BOARD THE ACFT WERE 3 MX PERSONNEL. THE NR 2 ENG CHIP ANNUNCIATOR LIGHT ILLUMINATED. ACTIVATED THE CHIP PULSE SYS ONC - [SDR QMLA2013062413089](https://openairdocs.org/sdr/QMLA2013062413089), Jun 24, 2013: SHAFT. WORN. DURING THE DAILY AIRWORTHINESS CHECK, A MISSING RIVET WAS FOUND IN THE AREA OF THE TAIL GEARBOX. AFTER A CLOSER INSPECTION, NUMEROUS RIVETS WERE FOUND TO HAVE T - [SDR QMLA2013021313026](https://openairdocs.org/sdr/QMLA2013021313026), Feb 13, 2013: GEARBOX. MAKING METAL. TAIL ROTOR GEARBOX CHIP LIGHT OCCURED DURING ENGINE SHUTDOWN. A VISUAL INSPECTION FOUND A CHIP OUT OF LIMITS. REMOVED FAILED GEARBOX. GEARBOX AND SHAFT ASSY, AS - [SDR QMLA2013012413010](https://openairdocs.org/sdr/QMLA2013012413010), Jan 24, 2013: O-RING. PINCHED. PILOT REPORTED FUEL SEEPING FROM ENGINE NR 2 COWLING AND MIGRATING BACK TO RT CLAMSHELL DOOR: UPON TROUBLESHOOTING, FOUND DAMAGED O-RING AT ENGINE 2 DRAIN VALVE - [SDR QMLA2012100912170](https://openairdocs.org/sdr/QMLA2012100912170), Oct 9, 2012: ATTACH FITTING. CRACKED. 90 DEG, TAIL ROTOR GEAR BOX ATTACHMENT FITTING, CRACKED ABOUT 1 CM AT OTBD TOP MOUNTING BOLT. - [SDR QMLA2012041312060](https://openairdocs.org/sdr/QMLA2012041312060), Apr 13, 2012: CASTING. CRACKED. FOUND OIL LEAKING AROUND VERTICAL FIN AREA. INSPECTED AREA AND FOUND TAIL ROTOR GEARBOX LEAKING AND NOTICED THAT TAIL ROTOR CASTING WAS ALSO CRACKED. UPON DISAS - [SDR QMLA2012030312023](https://openairdocs.org/sdr/QMLA2012030312023), Mar 3, 2012: UNKNOWN. ODOR. THE PILOT DETECTED THE ODOR OF FUEL IN THE CABIN AND COCKPIT, APPROXIMATELY FOUR MINUTES INTO FLIGHT. RETURNED TO BASE. MX INSPECTED ACFT IAW THE MM 60. NO DEFE - [SDR QMLA2011052411060](https://openairdocs.org/sdr/QMLA2011052411060), May 24, 2011: FUEL CONTROL. DEFECTIVE. ABOUT 4 MINUTES INTO FLIGHT STRAIGHT AND LEVEL NR 1 ENGINE ROLLED BACK TO 74 PERCENT N1 UNCOMMANDED. NR1 ENGINE LOW LIGHT ILLUMINATED. PILOT CONFIRMED PCL WAS I - [SDR QMLA2011033011042](https://openairdocs.org/sdr/QMLA2011033011042), Mar 30, 2011: BEARING. MAKING METAL. THE NR 2 ENGINE CHIP LIGHT ILLUMINATED ENROUTE TO A SCENE CALL. THE PILOT IMMEDIATELY ABORTED THE FLIGHT AND RETURNED TO BASE LESS THAN 3 MILES AWAY. UPON ARRIV - [SDR 7KFA775L](https://openairdocs.org/sdr/7KFA775L), Dec 4, 2010: WIRE. CHAFED. ELECTRICAL FIRE IN FLIGHT IN THE VICINITY OF SUCTION CONTROLS AND LIQUID OXYGEN GAUGE, FLAMES, SMOKE AND FUMES IN ACFT. WHEN DISCOVERED: IN FLIGHT, CAUSE OF INC - [SDR 2009F00114](https://openairdocs.org/sdr/2009F00114), Aug 25, 2009: SWASHPLATE. DISLODGED. ON 08/21/2009, INSTALLED A MAIN TRANSMISSION/SWASH PLATE ASSY NEWLY REPAIRED BY THE MFG. GROUND RUNS, TRACK AND BALANCE, AND FLIGHT TESTS WERE COMPLETED ON TUES - [SDR 7KFA486LF](https://openairdocs.org/sdr/7KFA486LF), Aug 25, 2009: FASTENER. MISSING. 08/21/2009 ERA MED LLC INSTALLED A MAIN TRANSMISSION/SWASH PLATE ASSEMBLY NEWLY REPAIRED BY THE MANUFACTURER (AEC). GROUND RUNS, TRACK AND BALANCE, AND FLIGHT T - [SDR 2009FA0000787](https://openairdocs.org/sdr/2009FA0000787), Aug 25, 2009: WASHER. MISSING. ON 08/21/2009 INSTALLED A MAIN TRANSMISSION/SWASH PLATE ASSY NEWLY REPAIRED BY THE MANUFACTURE. GROUND RUNS, TRACK, BALANCE, & FLIGHT TESTS COMPLETED, NOTHING O - [SDR QMLA2009072509024](https://openairdocs.org/sdr/QMLA2009072509024), Jul 25, 2009: CAP. MISINSTALLED. PILOT DID NOT PUT FUEL CAP BACK ON PROPERLY AFTER REFUELING, AFTER TAKEOFF A FUEL ODOR WAS NOTICED PILOT MADE AN UNSCHEDULED LANDING, NOTICED FUEL ON THE CABIN - [SDR RMXA061020097505](https://openairdocs.org/sdr/RMXA061020097505), Jun 10, 2009: SEAL. FAILED. DURING CRUISE FLIGHT, THE NR 2 ENGINE OIL PRESSURE CAUTION LIGHT ILLUMINATED ALONG WITH A DROP ON THE OIL PRESSURE INDICATOR GAUGE. THE ENGINE WAS SHUTDOWN IN F - [SDR QMLA052309018](https://openairdocs.org/sdr/QMLA052309018), May 23, 2009: CHIP DETECTOR. ILLUMINATED. IN CRUISE FLIGHT, TO PICK UP A PATIENT AT 2500MSL, ACFT EXPERIENCED A T/R CHIP LIGHT. THE ACFT COMPLETED THE EMERGENCY PROCEDURE FOR SAME, DIVERTED TO AN AIRPOR - [SDR 2009FA0000069](https://openairdocs.org/sdr/2009FA0000069), Feb 7, 2009: GASKET. LEAKING. TRANSPORTING A PATIENT AND DIVERTED TO AIRPORT BECAUSE CREW DETECTED A BURNING EXHAUST ODOR IN THE CABIN. PILOT DID NOT SMELL IT, BUT DIVERTED FOR SAFETY. MECHA - [SDR BAQA200700033](https://openairdocs.org/sdr/BAQA200700033), Oct 2, 2007: BLADE. CRACKED. WHILE PERFORMING A PREFLIGHT A CRACK WAS FOUND IN THE TAIL ROTOR BLADE NEAR THE DATA TAG. - [SDR BAQA200700032](https://openairdocs.org/sdr/BAQA200700032), Sep 24, 2007: FITTING. CRACKED. TAILROTOR GEAR BOX MOUNT FITTING AT TOP OF VERTICAL FIN CRACKED AND TAIL ROTOR GEAR BOX MOUNTING STUD ROSSET FITTING LOOSE. - [SDR RMXA2007](https://openairdocs.org/sdr/RMXA2007), Sep 20, 2007: SKIN PANEL. CRACKED. DURING A SCHEDULED INSPECTION, SEVERAL CRACKS WERE FOUND ON THE TAILBOOM TOP SKIN PT NR1120-32052.11 AROUND THE ATTACHING RIVET HOLES ON THE AFT LT EDGE. - [SDR BAQA2007005](https://openairdocs.org/sdr/BAQA2007005), Jan 30, 2007: SKIN. CRACKED. A CRACK WAS FOUND AT THE TOP OF THE TAILBOOM VERTICAL FIN WHILE TROUBLESHOOTING A TAIL ROTOR VIBRATION ISSUE. THE CRACK WAS FOUND ON THE LT SIDE OF THE ACCESS S - [SDR EHA2004F00002](https://openairdocs.org/sdr/EHA2004F00002), Jul 3, 2004: WARNING LIGHT. ILLUMINATED. NR 1 AND NR 2 FUEL FILTER LIGHT ILLUMINATED DURING FLIGHT. THE NR 1 CAME ON FIRST, THEN THE NR 2 CAME ON A MINUTE LATER. PILOT LANDED AIRCRAFT, CALLED FOR MECHA - [SDR BAQA094843](https://openairdocs.org/sdr/BAQA094843), May 28, 2004: INDICATOR. FAILED. NR 2 ENG N1 IND LED DIGITAL DISPLAY DIM/BRITE BULB BURNED OUT. REPLACED WITH SERVICABLE UNIT. 06/04/2004 - [SDR BAQA094478](https://openairdocs.org/sdr/BAQA094478), May 11, 2004: INDICATOR. BURNED OUT. LED DISPLAY LIGHTING BURNED OUT. REPLACED WITH SERVICABLE UNIT. - [SDR BAQA094415](https://openairdocs.org/sdr/BAQA094415), May 3, 2004: CONTROL UNIT. INOPERATIVE. STRONG LAT. INPUTS WITH YAW CSAS IN ON POSITON OR STANDBY POSITION, GOES AWAY WHEN SYSTEM IS TURNED OFF. UNIT LASTED 83.6 HOURS SINCE LAST REPAIR. LAST REPAIR, - [SDR BAQA094310](https://openairdocs.org/sdr/BAQA094310), May 3, 2004: INDICATOR. INOPERATIVE. GAUGE BACKLIGHTING INOPERATIVE. REPLACED WITH SERVICABLE UNIT. 05/05/2004 - [SDR BAQA094402](https://openairdocs.org/sdr/BAQA094402), Apr 30, 2004: INDICATOR. INOPERATIVE. WHEN FLOWN WITH INDICATOR. WINGS LEVEL IN TRIM A/C MAKES SLOW RT TURN, INDICATOR IS DRIFTING. REPLACED WITH SERVICABLE UNIT. 05/05/2004 - [SDR BAQA094704](https://openairdocs.org/sdr/BAQA094704), Apr 22, 2004: BEARING. WORN. BEARINGS WORN AND SLOPPY. REPLACED WITH SERVICABLE UNIT. 05/24/2004 - [SDR BAQA094099](https://openairdocs.org/sdr/BAQA094099), Apr 3, 2004: START VALVE. INOPERATIVE. WARRANTY - CORE RETURN FOR WARRANTY PO 202317606, ENG S/N 18167, VALVE WAS REMOVED IN THE TROUBLESHOOTING PROCESS OF HAR STARTING NR 1 ENGINE. REPLACED WITH SER - [SDR BAQA094174](https://openairdocs.org/sdr/BAQA094174), Apr 1, 2004: BLOWER. NOISY. BLOWER IS EXCESSIVELY NOISY OPERATION AND INTERMITTENT STARTING AND STOPPING. S/N 105 WAS TAKEN FROM ASSET STOCK AND INSTALLED ON A/C. YET TO RECEIVE THE REPLAC - [SDR EHA2004F00001](https://openairdocs.org/sdr/EHA2004F00001), Mar 14, 2004: DRAIN VALVE. LEAKING. PILOT REPORTED EXCESSIVE FUEL SMELL AFTER STARTING NR 1 ENGINE PILOT SHUT DOWN ENGINE DURING RESTART OBSERVED LARGE AMOUNT OF FUEL POURING OVER ENGINE FROM THE - [SDR BAQA093950](https://openairdocs.org/sdr/BAQA093950), Mar 12, 2004: LAMP. SHORTED. STROBE LAMP ASSY HAS AN INTERNAL SHORT, WILL NOT FLASH. REPALCED WITH SERVICABLE UNIT 03/26/2004 - [SDR BAQA093829](https://openairdocs.org/sdr/BAQA093829), Mar 12, 2004: CONTROL UNIT. FAILED. YAW CSAS MADE UNCOMMANDED YAW OSCILLATIONS IN NORMAL AND STANDBY MODE AT APPROX. TWO SECOND INTERVALS. UNIT WAS INSTALLED 02/16/2004 AT A/C TT 5145.8 AND WAS RE - [SDR BAQA092596](https://openairdocs.org/sdr/BAQA092596), Mar 9, 2004: ACTUATOR. FAILED. BENCH TEST FOR SERVICEABILITY. REPLACED WITH SERVICABLE UNIT. - [SDR BAQA092597](https://openairdocs.org/sdr/BAQA092597), Mar 9, 2004: ACTUATOR. INOPERATIVE. BENCH TEST FOR SERVICEABILITY. REPLACED WITH SERVICABLE UNIT. 03/09/2004 - [SDR BAQA093684](https://openairdocs.org/sdr/BAQA093684), Mar 9, 2004: TRANSPONDER. FAILED. EXCHANGE. UNIT GIVING WRONG ALTITUDE, BAD WIRES IN UNIT. REPLACED WITH SERVICABLE UNIT. 03/15/2004 - [SDR BAQA093635](https://openairdocs.org/sdr/BAQA093635), Mar 4, 2004: BLADE. DAMAGED. WARRANTY REPAIR/EXCHANGE : SINCE JULY 2, 1996 BLADE HAS FLOWN ONLY 346.1 HOURS. BLADE HAS ZERO HOURS AFTER BEING REMOVED FOR SUSPECTED COWLING STRIKE ON JULY 9, - [SDR BAQA092751](https://openairdocs.org/sdr/BAQA092751), Mar 3, 2004: BLADE. OUT OF TRACK. RENTAL 117-151451V001 S/N 2622 RENTAL CHARGE 36.75 HR REPLACEMENT VALVE RETURN OF RENTAL BLADE AFTER .4 HOURS OF USE, WOULD NOT TRACK REPLACED WITH ANOTHER RENT - [SDR BAQA092750](https://openairdocs.org/sdr/BAQA092750), Mar 3, 2004: BLADE. OUT OF TRACK. RETURN OF RENTAL BLADE AFTER .4 HOURS OF USE, BLADE WOULD NOT TRACK. REPLACED WITH ANOTHER RENTAL BLADE (S/N 2413) - [SDR BAQA093742](https://openairdocs.org/sdr/BAQA093742), Feb 29, 2004: INDICATOR. INOPERATIVE. DIGITS UNREADABLE AT NIGHT. REPLACED WITH SERVICABLE ASSET UNIT. 03/12/2004 All 387: https://openairdocs.org/model/kawasaki-bk117c-1/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Messerschmitt-Bolkow-Blohm BK-117C1](https://openairdocs.org/model/messerschmitt-bolkow-blohm-bk-117c1): 0 registered aircraft, registry code 5626001 --- 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.