# Service difficulty reports: Kawasaki BK117A-4 A list on [Kawasaki BK117A-4](https://openairdocs.org/model/kawasaki-bk117a-4.md). Newest first. General aviation reporting is voluntary. Page 1 of 10 · 496 reports - [SDR QMLA2018112518125](https://openairdocs.org/sdr/QMLA2018112518125.md): Rivet · loose · Nov 25, 2018 · N485UH · Bolkms BK117A4 · Tail Rotor Drive Shaft > PILOT CONTACTED ME AFTER PERFORMING HIS DAILY PREFLIGHT AIRWORTHINESS CHECK. HE STATED THE TAIL ROTOR WAS MAKING A POPPING SOUND WHEN ROTATING IT BY HAND. I PROCEEDED TO REMOVE THE VERTICAL STABILIZER REAR FAIRING. I FOUND THAT WHEN HE ROTATED THE TAIL ROTO - [SDR QMLA2018050118052](https://openairdocs.org/sdr/QMLA2018050118052.md): Mount · corroded · May 1, 2018 · N587MC · Bolkms BK117A4 · Fuselage Main, Structure > DURING ROUTINE MAINTENANCE, THE MAIN TRANSMISSION DRIP PAN WAS REMOVED FOR OIL CHANGE WHEN IT WAS DISCOVERED THAT THE LOAD SIDE MOUNT WAS BROKEN IN HALF. AFTER REMOVAL OF THE MOUNT, SIGNIFICANT CORROSION WAS DISCOVERED INSIDE OF THE SEALED MOUNT. - [SDR QMLA2017050517047](https://openairdocs.org/sdr/QMLA2017050517047.md): Landing Light · odor · May 5, 2017 · N485UH · Bolkms BK117A4 · Exterior Lighting > ON APPROACH, THE FLIGHT CREW SMELLED A LIGHT ODOR OF BURNING PLASTIC. ONCE ON THE GROUND, THE MECHANIC FOUND THE RETRACTABLE LANDING LIGHT TO BE THE SOURCE. THE SYSTEM WAS DEACTIVATED AND DEFERRED. THE AIRCRAFT WAS THEN RETURNED TO SERVICE WITH NO OTHER DEFECT - [SDR HEER20170105759](https://openairdocs.org/sdr/HEER20170105759.md): Governor · malfunctioned · Jan 5, 2017 · N4XBDW · Bolkms BK117A4 · Turbine Governor > DURING CRUISE FLIGHT, SUDDEN LOSS OF RIGHT ENGINE POWER ACCOMPANIED WITH HELICOPTER YAW MOVEMENT AND NR 2 ENGINE LOW LIGHT. SIGNIFICANT SPLIT IN TORQUE, N2 AND NR NEEDLES. IN A FEW SECONDS THE NR 2 ENGINE CAME BACK TO HIGH POWER WITH N2 & NR RISING TO 106-10 - [SDR QMLA2016110116120](https://openairdocs.org/sdr/QMLA2016110116120.md): Elec Connector · contaminated · Nov 1, 2016 · N911MZ · Bolkms BK117A4 · Fuel System Wiring > CREW MEMBER REPORTED FUEL ODOR DURING GROUND OPERATIONS. THE PILOT SHUTDOWN THE ENGINES AND CALLED THE MECHANIC OUT TO INSPECT THE AIRCRAFT. REMOVED THE CENTER CEILING PANELS INSIDE THE CABIN, AND FOUND SOME FUEL RESIDUE AROUND SOME ELECTRICAL CONNNECTORS AND - [SDR QMLA2016103016119](https://openairdocs.org/sdr/QMLA2016103016119.md): B-Nut · leaking · Oct 30, 2016 · N911MZ · Bolkms BK117A4 · Aircraft Fuel Distribution System > THE PILOT AND MEDICAL CREW SMELLED A STRONG FUEL ODOR WITHIN THE CABIN OF THE AIRCRAFT. THE MECHANIC WAS CALLED OUT TO INSPECT THE AIRCRAFT AND FOUND A FUEL LINE FROM THE PUMP ON THE ENGINE SIDE UNDER TORQUED. TORQUED THE B-NUT, AND ACCOMPLISHED A GROUND RUN - [SDR QMLA2016061716066](https://openairdocs.org/sdr/QMLA2016061716066.md): Stringer · cracked · Jun 17, 2016 · N625LN · Bolkms BK117A4 · Fuselage Main, Longeron/Stringer > DISCOVERED CRACK IN STR DURING SCHEDULED MAINTENANCE EVENT. - [SDR QMLA2016061616066](https://openairdocs.org/sdr/QMLA2016061616066.md): Skin · corroded · Jun 16, 2016 · N625LN · Bolkms BK117A4 · Fuselage Main, Plate/Skin > CORROSION ON SKIN OF ACFT, CORROSION ON THE RT SIDE PENETRATED IN TO THE OUTER FRAME OF THE RT ENGINE DECK ASSY. DISCOVERED DURING SCHEDULED MAINTENANCE EVENT. - [SDR QMLA2016061616064](https://openairdocs.org/sdr/QMLA2016061616064.md): Stringer · cracked · Jun 16, 2016 · N625LN · Bolkms BK117A4 · Fuselage Main, Longeron/Stringer > DISCOVERED CRACK IN STR DURING A SCHEDULED MAINTENANCE EVENT. - [SDR QMLA2016052016052](https://openairdocs.org/sdr/QMLA2016052016052.md): Chip Detector · contaminated · May 20, 2016 · N911MZ · Bolkms BK117A4 · Turbine Engine Accessory Drive > NUMBER 2 ENG CHIP LIGHT IN CRUISE, WOULD NOT EXTINGUISH WITH 3 ZAPS. SHUTDOWN NR 2 ENG IAW ACFT EMER PROCEDURE CHECKLIST. UPON ARRIVAL, INSPECTED THE CHIP DETECTOR FOR DEBRIS. COLLECTED & PRESERVED THE DEBRIS COLLECTED & TOOK A SOAP SAMPLE FOR ANALYSIS WITH - [SDR QMLA2015071715059](https://openairdocs.org/sdr/QMLA2015071715059.md): Fire Warning · false activation · Jul 17, 2015 · N911MZ · Bolkms BK117A4 · Fire Detection > THE NR 2 FIRE WARNING LIGHT WAS GLOWING VERY DIMLY. DID NOT NOTICE THE FIRE LIGHT WAS ON UNTIL THE OTHER COCKPIT LIGHTS WERE DIMMED FOR SHUTDOWN. THERE WAS NO EVIDENCE OF A FIRE IN THE NR 2 ENG COMPARTMENT. THE FIRE WARNING SYS STILL TESTED PROPERLY & CAME - [SDR QMLA2015062615053](https://openairdocs.org/sdr/QMLA2015062615053.md): Mount Fitting · worn · Jun 26, 2015 · N911MZ · Bolkms BK117A4 · Engine Mount Section > NUMBER 2 INBD FWD ENG MOUNT FITTING BUSHING WORN & ELONGATED, REQUIRING REPAIR SCHEME. REPAIR COMPLETED WITH FORM 337 DATED 07 07 2015. - [SDR QMLA2015031915019](https://openairdocs.org/sdr/QMLA2015031915019.md): Fire Warning · false activation · Mar 19, 2015 · N911MZ · Bolkms BK117A4 · Fire Detection > NUMBER 2 ENG FIRE LIGHT ILLUMINATED IN FLIGHT WITH NO FIRE. ACFT LANDED WITHOUT INCIDENT. NR 2 ENG FIRE DETECTOR SYS INSPECTED & TESTED, NO FAULTS FOUND, COULD NOT DUPLICATE FAULT. - [SDR QMLA2014120314136](https://openairdocs.org/sdr/QMLA2014120314136.md): Structure · cracked · Dec 3, 2014 · N163BK · Bolkms BK117A4 · Fuselage Miscellaneous Structure > DURING REPLACEMENT OF MAIN TRANSMISSION STAY ASSEMBLY PN 117-11182-03 FOUND 5 CRACKS EMANATING FROM RIVETS NEAR THE AREA OF THE STAY ASSEMBLY. - [SDR M7FA2014F00099](https://openairdocs.org/sdr/M7FA2014F00099.md): Door · detached · May 4, 2014 · N504TJ · Bolkms BK117A4 · Passenger/Crew Doors > DOOR OPENED IN FLIGHT, AS IT WAS OPENING, THE DOOR SEPARATED FROM THE DOOR TRACK AND PIVOTED UP, CONTACTING THE ROTOR BLADES BEFORE LEAVING THE ACFT. - [SDR QMLA2014042514043](https://openairdocs.org/sdr/QMLA2014042514043.md): Connector · dirty · Apr 25, 2014 · N163BK · Bolkms BK117A4 · Tail Rotor Drive System Wiring > ACFT HAD UNCOMMANDED YAW, CONTINUED AFTER PRESSING STABILIZATION CUT OFF PUSH BUTTON. LANDED AT NEARBY AIRPORT WITHOUT FURTHER INCIDENT. INSPECTED ALL T/R LINKAGE FROM NOSE TO TAIL, WITHOUT REMOVING MEDICAL FLOOR WITH NO DEFECTS FOUND. INSPECTED DRIVE SHAFT - [SDR QMLA2014030514023](https://openairdocs.org/sdr/QMLA2014030514023.md): Floor Panel · failed · Mar 5, 2014 · N138HH · Bolkms BK117A4 · Fuselage Floor Panel > UPON INSPECTION DISCOVERED PILOT'S THRUST REVERSER PEDAL BELL CRANK ASSEMBLY SEPARATED FROM THE FLOOR PANEL IN THE AREA OF THE FWD ATTACH BOLTS DUE TO FATIGUE OF THE POTTING COMPOUND, NO EVIDENCE OF CORROSION. - [SDR QMLA2013080113110](https://openairdocs.org/sdr/QMLA2013080113110.md): Switch · worn · Aug 1, 2013 · N485UH · Bolkms BK117A4 · Fire Detection > DURING LANDING, NOTICED NR 1 ENGINE FIRE LIGHT ILLUMINATED. AFTER LANDING AND SHUTDOWN NOTICED THE TEST SWITCH WAS NOT IN THE SPRING LOADED NEUTRAL POSITION. DISCOVERED SWITCH WAS NOT OPERATING PROPERLY. - [SDR QMLA2013070513091](https://openairdocs.org/sdr/QMLA2013070513091.md): Blade · dented · Jul 5, 2013 · N138HH · Bolkms BK117A4 · Tail Rotor Blades > DURING DAILY AIRWORTHINESS CHECK, NOTICED A DENT TO THE L/E ERROSION STRIP ON TAIL ROTOR BLADE. ACFT TAKEN OUT OF SERVICE. DETERMINED TAIL ROTOR BLADE TO BE UNSERVICEABLE. INVESTIGATION INTO CAUSE OF DAMAGE IS IN PROGRESS. THE ACFT HAS SINCE RETURNED T - [SDR QMLA2013033113046](https://openairdocs.org/sdr/QMLA2013033113046.md): Line · leaking · Mar 31, 2013 · N504LH · Bolkms BK117A4 · Fuel Controlling System > NURSE IDENTIFIED SMALL QUANTITY OF FUEL LEAKING FROM MEDICAL CABIN CEILING AT AFT RT SIDE STATION THROUGH LIGHT FIXTURE AFTER LANDING AT HOSPITAL. FUEL WAS FOUND IN RT SIDE ENGINE COMPARTMENT INTAKE AREA ON BOTTOM DECK AS WELL AS A FEW DROPS FROM LOWER DECK D - [SDR QMLA2012071212115](https://openairdocs.org/sdr/QMLA2012071212115.md): Cyclic Control · binding · Jul 12, 2012 · N163BK · Bolkms BK117A4 · Main Rotor Control > DURING MX TEST FLIGHT, AFTER COMPLETION OF 3600 HR INSPECTION, COMPLETED GROUND RUN AND HOVER CHECKS. PROCEEDED TO TAKEOFF, AT APPROX 100 FT AGL SLOWLY ACCELERATED ACFT THROUGH ETL, CYCLIC CONTROL LOCKED UP IN THE PITCH AXIS. NOSE OF ACFT CONTINUED TO PITCH - [SDR QMLA2012052712088](https://openairdocs.org/sdr/QMLA2012052712088.md): Engine · making metal · May 27, 2012 · N909LC · Bolkms BK117A4 · Engine (Turbine/Turboprop) > DURING LANDING, THE NR 1 ENGINE CHIP LIGHT ILLUMINATED AS THE COLLECTIVE WAS PLACED FULL DOWN AFTER LANDING. EXCESS CHIPS WERE FOUND ON CHIP DETECTOR AND MX DETERMINED ENGINE MUST BE REPLACED. - [SDR CA120712002](https://openairdocs.org/sdr/CA120712002.md): Blade · damaged · May 18, 2012 · Bolkms BK117A4 · Main Rotor Blades > (CAN) CYCLIC STICK PUSHED EXCESSIVELY FORWARD AND MAIN ROTOR CONTACTED THE UPPER WIRE STRIKE WHILE ON THE GROUND AT IDLE WITH NO CHANGE IN RPM. MAIN ROTOR BLADES REMOVED AND INSPECTED, FOUND DAMAGE ON L/E. ALL M/R BLADES WERE REPLACED WITH NEW BLADES FROM EC - [SDR QMLA2012042112062](https://openairdocs.org/sdr/QMLA2012042112062.md): Engine · power loss · Apr 21, 2012 · N163BK · Bolkms BK117A4 · Engine (Turbine/Turboprop) > ON APPROACH, MASTER CAUTION LIGHT ILLUMINATED WITH A NR 1 ENGINE LOW LIGHT FOLLOWED BY A LARGE TORQUE SPLIT ( NR 1 LOW AT 20 PERCENT AND NR 2 HIGH AT 80 PERCENT). ABORTED APPROACH AND PROCEEDED TO NEAREST AIRPORT FOR A PRECAUTIONARY LANDING. WHILE ON APPROA - [SDR QMLA2012011912008](https://openairdocs.org/sdr/QMLA2012011912008.md): Bolt · broken · Jan 19, 2012 · N485UH · Bolkms BK117A4 · Tail Rotor Gearbox > WHILE PERFORMING A ZONE 4 INSPECTION IAW AMC AAIP, WHICH REQUIRES AN INSPECTION OF THE TAIL ROTOR GEARBOX FOR PROPER TORQUE OF ATTACHING HARDWARE. DURING THIS INSPECTION, ONE BOLT BROKE WITH MINIMAL EFFORT. REMOVED THE TAIL ROTOR GEARBOX TO INSPECT AND FOUND - [SDR CA111103006](https://openairdocs.org/sdr/CA111103006.md): Spline · broken · Nov 1, 2011 · Bolkms BK117A4 · Fuel Controlling System > (CAN) THE GOVERNOR WAS REMOVED FOR SPOOL BEARING CHANGE IAW SB LTS101-73-20-0262 & THE REPAIR SHOP DISCOVERED THE BROKEN DRIVE SPLINE. THIS WOULD NOT HAVE BEEN VISIBLE ON REMOVAL BECAUSE THE BITS ARE HELD IN WITH THE SPRING. - [SDR QMLD201110052601](https://openairdocs.org/sdr/QMLD201110052601.md): Rib · cracked · Oct 5, 2011 · N527MB · Bolkms BK117A4 · Vertical Stabilizer, Spar/Rib > THE TOP RIB OF THE VERTICAL FIN WHERE THE ANTI COLLOSION LIGHT BASE IS MOUNTED, EXIBITS A CRACK RADIATING FROM THE NUTPLATE THAT IS MOUNTED UNDERNEATH. - [SDR QMLA2011093011097](https://openairdocs.org/sdr/QMLA2011093011097.md): Engine · power loss · Sep 30, 2011 · N424MB · Bolkms BK117A4 · Engine (Turbine/Turboprop) > THE PILOT REPORTED, AFTER PREFLIGHT AND CONFIRMATION CHECKS WERE CONDUCTED, LIFTED TO HOVER. USED THE ENGINE BEEP SWITCH TO SLIGHTLY INCREASE THE NR/N2 RPM TO 100 PERCENT. ON CLIMBOUT REACHING 900 FEET MSL, REDUCED COLLECTIVE TO 50 % ENGINE TORQUE TO ASSESS - [SDR QMLA2011060211061](https://openairdocs.org/sdr/QMLA2011060211061.md): Door · separated · Jun 2, 2011 · N485UH · Bolkms BK117A4 · Passenger/Crew Doors > WHILE THE PILOT WAS IN CRUISE FLIGHT CONDUCTING AN ORIENTATION FLIGHT WITH ONLY A PASSENGER IN THE COPILOT SEAT, THE LT CABIN DOOR SEPARATED FROM THE ACFT AT APPROX 2000' MSL. THE PILOT MADE A PRECAUTIONARY LANDING TO INSPECT THE ACFT. THE MECHANIC ARRIVED T - [SDR UNFR2011052500003](https://openairdocs.org/sdr/UNFR2011052500003.md): Skin · misrepaired · May 23, 2011 · N911MZ · Bolkms BK117A4 · Rotorcraft Tail Boom > PERFORMING INSP ON TAILBOOM AND DISCOVERED RIVETS IN TAILBOOM THAT WERE NOT CORRECTLY INSTALLED AT PREVIOUS REPAIR ON TOP SKIN BECAUSE OF DIMPLES IN SKIN DID NOT LINE UP WITH HOLES IN STRINGER CORRECTLY. PREVENTING SKIN TO RECESS CORRECTLY, THUS WITH GAP IN - [SDR QMLA2011012411012](https://openairdocs.org/sdr/QMLA2011012411012.md): Access Door · chafed · Jan 24, 2011 · N485UM · Bolkms BK117A4 · Fuselage Main, Plate/Skin > THE LT TRANSMISSION ACCESS COWLING CHAFED INTO THE MAIN TRANSMISSION DECK STRUCTURE AT AF STA 4239, WL 2753 AND BL 452.00L BEYOND MFG ACCEPTABLE LIMITS. THE APPROVED REPAIR WAS PROVIDED BY MFG ON FAA FORM 8110-3 DATED JANUARY 17, 2011. THE REPAIR WAS COMPLI - [SDR QMLA2011011111007](https://openairdocs.org/sdr/QMLA2011011111007.md): Unknown · odor · Jan 11, 2011 · N117CW · Bolkms BK117A4 · Air Distribution System > FUELED TO MAX, ON LEVEL OFF HAD FUEL ODOR IN AFT CABIN, DIVERTED TO NEARBY AIRPORT. MECHANIC WAS CALLED AND INSPECTED FUEL LINES ON BOTH ENGINES, REMOVED INTERIOR PANELS AND INSPECTED INTERIOR FUEL LINES AND NOTED NO FUEL LEAKAGE. - [SDR QMLDMG1475](https://openairdocs.org/sdr/QMLDMG1475.md): Structure · corroded · Dec 7, 2010 · N485UH · Bolkms BK117A4 · Fuselage Main, Structure > DURING INSP FOUND CORROSION ON THE LT INBD, RT INBD AND RT AFT ENGINE DECK. - [SDR QMLDMG1474](https://openairdocs.org/sdr/QMLDMG1474.md): Frame · cracked · Dec 7, 2010 · N485UH · Bolkms BK117A4 · Fuselage Main, Frame > DURING INSP FOUND THE TAIL CONE "A" FRAME CRACKED AT THE ECS BLEED LINE ATTACHMENT. AWAITING A REPAIR SCHEME FROM MFG. - [SDR QMLDMG1473](https://openairdocs.org/sdr/QMLDMG1473.md): Skin · dented · Nov 24, 2010 · N485UH · Bolkms BK117A4 · Fuselage Main, Plate/Skin > (QMLD) VARIOUS DENTS, PUNCTURES, AND GOUGES TO THE OUTER SKIN OF THE LOWER FUSELAGE BELLY AREA. THE INTERNAL FRAME IS DEFORMED IN ONE LOCATION ALSO. SUBMITTED DAMAGE. AWAITING A REPAIR SCHEME. - [SDR QMLA2010102510072](https://openairdocs.org/sdr/QMLA2010102510072.md): Fuel Sys · contaminated · Oct 25, 2010 · N627AM · Bolkms BK117A4 · Engine Fuel Distribution > ACFT HAD UNDERGONE FUEL QTY INDICATOR CALIBRATION 2 DAYS PREVIOUSLY. PILOT ATTEMPTED TO START ENGINES, NEITHER ENGINE WOULD START. MX DETERMINED FUEL SYS HAD NOT BEEN PURGED OF AIR AFTER PREVIOUS WORK COMPLETED. FUEL LINES OF BOTH ENGINES WERE PURGED & BOTH E - [SDR QMLDMG1472](https://openairdocs.org/sdr/QMLDMG1472.md): Doubler · cracked · Oct 7, 2010 · N485UH · Bolkms BK117A4 · Fuselage Miscellaneous Structure > DURING AN INSPECTION OF THE TAIL CONE AREA FOUND THE AFT DOUBLER FRAME AT STA 6135 CRACKED. CONSULTED MFG AND ARE AWAITING A REPAIR SCHEME. - [SDR QMLDMG1471](https://openairdocs.org/sdr/QMLDMG1471.md): Structure · chafed · Oct 7, 2010 · N485UH · Bolkms BK117A4 · Fuselage Main, Structure > DURING INSPECTION OF THE AIRFRAME, FOUND CHAFING FROM THE TRANSMISSION COWLINGS ON THE LT AND RT SIDES INTO THE LT AND RT SIDES OF THE TRANSMISSION DECK. CONSULTED WITH MFG, AWAITING A REPAIR SCHEME. - [SDR QMLA2010090110055](https://openairdocs.org/sdr/QMLA2010090110055.md): Fuel Cap · missing · Sep 1, 2010 · N125EC · Bolkms BK117A4 · Fuel Storage > THE PILOT AND MEDICAL CREW SMELLED FUEL SHORTLY AFTER TAKEOFF. THEY IMMEDIATELY RETURNED TO BASE AND FOUND THE FUEL CAP MISSING FROM THE ACFT. THE FUEL CAP WAS NEVER LOCATED, SO THE CAUSE OF WHETHER THE CAP WAS INTALLED INCORRECTLY OR IF THE LOCKING MECHANIS - [SDR RMXA072820107103](https://openairdocs.org/sdr/RMXA072820107103.md): Skin · cracked · Jul 28, 2010 · N527MB · Bolkms BK117A4 · Rotorcraft Tail Boom > DURING MX A 1" LONG CRACK WAS DISCOVERED IN THE TAILBOOM VERTICAL FIN OUTER SKIN STARTING FROM AN ACCESS OPENING AT THE UPPER END OF THE VERTICAL FIN. REPAIR SCHEME REQUEST WAS SUBMITTED FROM THE MFG. - [SDR QMLA2010071910039](https://openairdocs.org/sdr/QMLA2010071910039.md): Firewall · cracked · Jul 19, 2010 · N163BK · Bolkms BK117A4 · Nacelle/Pylon, Bulkhead/Firewall > CRACK IN FIREWALL AFT MOUNTING HOLE. - [SDR RMXA0305107013](https://openairdocs.org/sdr/RMXA0305107013.md): Compensator · unserviceable · Mar 5, 2010 · N113LL · Bolkms BK117A4 · Engine (Turbine/Turboprop) > ENGINE WAS RETURNED TO IDLE POSITION & NOT SHUTDOWN IN FLIGHT. ON RETURN LEG OF FLIGHT, PILOT NOTICED TORQUE SPLITS BETWEEN ENGINES. ADJUSTED & NOTICED TORQUE SPLIT GOT WORSE. REDUCED NR 2 ENGINE TO IDLE POSITION & PERFORMED UNEVENTFUL RUNNING ON LANDING. TROU - [SDR HEEA127331](https://openairdocs.org/sdr/HEEA127331.md): Governor · split · Feb 8, 2010 · N217PH · Bolkms BK117A4 · Turbine Governor > IN CRUISE FLIGHT, NR 2 ENG LOW MASTER CAUTION ILLUMINATED. VERFIED ENG LOW BY WIDE TORQUE SPLIT. LOWERED POWER AND COMPLIED WITH ENG LOW CHECKLIST. PERFORMED OEI LANDING. MX REPLACED NR 2 ENG GOVERNOR AND PC FILTER ASSY PN 4-301-229-02. - [SDR RMXA020420107013](https://openairdocs.org/sdr/RMXA020420107013.md): Rib · cracked · Feb 4, 2010 · N113LL · Bolkms BK117A4 · Rotorcraft Tail Boom > DURING A DAILY INSP, A CRACK WAS DISCOVERED ON THE UPPER TAILBOOM VERTICAL FIN NOSE RIB PN 105-30402.18. THE CRACK WAS APPROX. 1.5 -2" IN LENGTH. THE NOSE RIB WAS DRILLED OFF TO INSPECT THE TAIL ROTOR GEARBOX MOUNTING CASTING LOCATED UNDERNEATH THIS NOSE RIB - [SDR QMLA2000911140904](https://openairdocs.org/sdr/QMLA2000911140904.md): Computer · odor · Nov 14, 2009 · N68AM · Bolkms BK117A4 · Rotorcraft Servo System > PITCH AND ROLL CSAS WENT OFF LINE AND CAME BACK ON LINE. THEN SMELLED BURNING ODOR AND CSAS WENT OFF LINE AND DID NOT COME BACK ON LINE. - [SDR QMLA2009102909038](https://openairdocs.org/sdr/QMLA2009102909038.md): Seal · missing · Oct 29, 2009 · N627AM · Bolkms BK117A4 · Doors > FOLLOWING TAKEOFF, DURING CLIMB-OUT, AFTER PIC TURNED ON ECU, CABIN CREW REPORTED DETECTED FUEL FUMES. PIC TURNED OFF ECU, FUMES DID NOT CEASE. COCKPIT CREW NOTICED FUMES. PIC ABORTED MISSION, VENTILATED COCKPIT AND CABIN, AND RETURNED TO BASE WITHOUT INCID - [SDR RMXA2009071401085](https://openairdocs.org/sdr/RMXA2009071401085.md): Ics Box · defective · Jul 14, 2009 · N711FC · Bolkms BK117A4 · Instrument Panel > AT 3000FT AND CRUISE, PILOT AND CTR CONSOLE LIGHTS WENT OUT. WEATHER WAS CAVU WITH A HALF MOON. USED MAP LIGHT FOR ILLUMINATION AND RETURNED TO HOME BASE. ON SHORT FINAL WE SMELLED ELECTRICAL FUMES BUT NO INDICATION OF SMOKE. AMM AND VOLT METERS WERE NORMAL - [SDR RMXA0606097061](https://openairdocs.org/sdr/RMXA0606097061.md): Fire Detector · shorted · Jun 6, 2009 · N504LH · Bolkms BK117A4 · Fire Detection > THE NR 2 ENGINE FIRE DETECTION WARNING LAMP ILLUMINATED DURING FINAL APPROACH TO THE HOME HELIPAD. THE LANDING WAS COMPLETED WITHOUT EVENT AND THE ENGINES WERE SHUTDOWN. NO FIRE OR SMOKE. TROUBLESHOOTING REVEALED A DEFECTIVE FIRE DETECTOR. - [SDR RMXA051220097098](https://openairdocs.org/sdr/RMXA051220097098.md): Frame · cracked · May 12, 2009 · N911MZ · Bolkms BK117A4 · Fuselage Main, Frame > DURING SCHEDULED MAINTENANCE, A 1 INCH LONG CRACK WAS DISCOVERED IN THE FUSELAGE TAILCONE LT A FRAME PT NR 117-22106-01. - [SDR RMXA051120097138](https://openairdocs.org/sdr/RMXA051120097138.md): Spar · cracked · May 11, 2009 · N171MU · Bolkms BK117A4 · Rotorcraft Tail Boom > VISUAL INSPECTION POSTFLIGHT REVEALED A LARGE CRACK ON THE TAILBOOM VERTICAL FIN SPAR. Next page: https://openairdocs.org/model/kawasaki-bk117a-4/reports.md?page=2 ## 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 = 'BK117A4' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/kawasaki-bk117a-4/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.