Eurocopter BK117-B2

Service difficulty reports · 435

Newest first. General aviation reporting is voluntary.

Query with SQL
duckdb -csv -c "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 = 'BK117B2'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR QMLA2026100520075Fuel Cap · looseFUEL ODOR CLIMBING OUT OF AIRPORT. AFTER AN IMMEDIATE RETURN TO THE AIRPORT THE IT WAS CONFIRMED THAT THE FUEL CAP WAS SECURELY LOCKED, HOWEVER FUEL WAS VISIBLE AROUND THE EDGE OF THE CAP AND ON THE AIRFRAME. A CLOSER INSPECTION OF THE CAP SHOWED THAT, ALTHOUGOct 4, 2026 · N64UP · Bolkms BK117B2 · Fuel StorageSDR QMLA2025010820045Skin · crackedDURING INSPECTION FOUND 2 CRACKS IN THE TOP SKIN OF THE TAILBOOM.Mar 15, 2025 · N880SL · Bolkms BK117B2 · Rotorcraft Tail BoomSDR QMLA2024042520042Fuel Cap · looseDURING TAKEOFF AND CLIMB, CREW NOTICED A FUEL SMELL AS WELL AS FUEL ON THE CLAMSHELL DOOR WINDOWS AND TAILBOOM SECTION. AIRCRAFT RETURNED TO THE AIRPORT FOR FURTHER INSPECTION. SUPPLEMENTAL INFORMATION RESEATED FUEL CAP, UNABLE TO DUPLICATE THE ISSUE.Apr 25, 2024 · N64UP · Bolkms BK117B2 · Fuel StorageSDR QMLA2024022520042Unknown · odorDURING TAKEOFF AND CLIMB, CREW NOTICED A FUEL SMELL AS WELL AS FUEL ON THE CLAMSHELL DOOR WINDOWS AND TAIL BOOM SECTION. AIRCRAFT RETURNED TO THE AIRPORT FOR FURTHER INSPECTION.Apr 25, 2024 · N64UP · Bolkms BK117B2 · Air Distribution SystemSDR QMLA2024030520030Frame · crackedDURING SCHEDULED INSPECTION FOUND CRACK IN 11L FRAME IN TAIL BOOM AT THE 8 O'CLOCK POSITION, 31MM LONG.Mar 5, 2024 · N880SL · Bolkms BK117B2 · Fuselage Main, FrameSDR QMLA2023052620040Tail Boom · crackedDURING VISUAL INSPECTIONS FOUND A CRACK AT THE 0900 O'CLOCK POSITION ON THE 11L FRAME OF THE TAIL BOOM. DURING DISASSEMBLY AND FURTHER INSPECTION FOUND CHAFE DAMAGE AT THE 0300 O'CLOCK POSITION ON THE 11L FRAME AND ALSO A CRACK ON THE SPAR ABOVE THE 10L FRAME May 8, 2023 · N880SL · Bolkms BK117B2 · Rotorcraft Tail BoomSDR QMLA20220202006Unknown · odorUPON STARTUP OF #1 ENGINE PILOT & CREW NOTICED AN UNUSUAL BURNING SMELL IN THE COCKPIT/CABIN OF THE AIRCRAFT. VERIFICATION THAT THE SMELL WASN'T COMING FROM OUTSIDE THE AIRCRAFT WAS CONFIRMED AND ENGINE WAS SHUT DOWN. THE SMELL WAS DESCRIBED AS POSSIBLE HOT PLJan 20, 2022 · N880SL · Bolkms BK117B2 · Heating SystemSDR QMLA2021101120051Tail Boom · crackedFOUND 16MM CRACK IN L/H SIDE OF TAIL ROTOR GEARBOX MOUNTING ACCESS HOLE ON TAILBOOM VERTCAL FINSep 20, 2021 · N250KF · Bolkms BK117B2 · Fuselage Structure (General)SDR CA190521024Chip Detector · activated(CAN) THE CREW WAS JUST FINISHING UP THE COLLECTIVE PITCH STOP CHECK WHEN ENG #2 CHIP ILLUMINATED. CONDUCTED THE ENG CHIP PROCEDURE AS LISTED IN THE QRH. CHIP DID NOT CLEAR AFTER FIRST ATTEMPT OF PULSE CHIP DETECTOR SYSTEM. ADVISED ATC OF SITUATION AND REQUESTApr 29, 2019 · Bolkms BK117B2 · Engine (Turbine/Turboprop)SDR HDNA2019013100001Wire Harness · shortedDURING CRUISE FLIGHT PILOT NOTICED MASTER CAUTION FLICKERING, DETERMINED IT WAS "ENG 1 LOW" LIGHT FLICKERING, BOTH ENG INDICATIONS SOLID, NO OTHER INDICATION NOTICED, DECIDED TO DO A PRECAUTIONARY LANDING AT BASE, LIGHT STOPPED FLICKERING AT APPROX 70 KNOTS, AJan 30, 2019 · N317UH · Bolkms BK117B2 · Engine Bleed Air System WiringSDR QMLA2018081618097Mount · crackedDURING A PREFLIGHT, A CRACK WAS NOTICED NEAR UPPER LEFT CORNER OF TAIL ROTOR GEARBOX MOUNTING PAD. INVESTIGATED A POSSIBLE CRACK AND CLEANED AREA OF PAINT. INSPECTED THE UNDERSIDE OF THE MOUNTING PAD. AFTER CLEANING AND REMOVING PAINT A LARGE NOTICEABLE CRAug 16, 2018 · N270SL · Bolkms BK117B2 · Rotorcraft Tail BoomSDR QMLA2018030418028Cyclic Control · malfunctionedPILOT CLAIMED THAT IN LEVEL FLIGHT THE CYCLIC FLIGHT CONTROL WOULD NOT MOVE MORE THAN AN INCH IN ANY DIRECTION. TRIED SYSTEM 2 AND HAD THE SAME BLOCKAGE AND WENT BACK TO SYSTEM 1. NOTED TO ME THAT THE COLLECTIVE AND YAW WAS ACTING NORMAL ONLY THE CYCLIC HADMar 4, 2018 · N1174U · Bolkms BK117B2 · Main Rotor ControlSDR QMLA2018022718023Gearbox · crackedTHIS AIRCRAFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION. THE AFT VERTICAL FIN SPAR WAS CLEANED TO PERFORM AD 1998-24-13. THE FOLLOWING DAY A VERY SMALL SPOT OF OIL WAS NOTICED ON THE SPAR BELOW THE LEFT SIDE OF THE T/R GEARBOX. THE GEARBOX WAS REMOFeb 26, 2018 · N270SL · Bolkms BK117B2 · Tail Rotor GearboxSDR QMLA2018022618022Mount · crackedTHIS AIRCRAFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION. TOP FWD ECU MOUNT TOP FIVE RIVETS SHEARED AND GUSSET CRACKED. TOP AFT MOUNT AND GUSSET FOUND ATTACHED WITH 6/32 SCREWS AND NUTPLATES, RUBBER SHIMS FOUND UNDER THE MOUNT, AND TWO SCREWS SHEAREFeb 26, 2018 · N270SL · Bolkms BK117B2 · Fuselage Main, Attach FittingsSDR QMLA2018022618021Frame · crackedWHILE COMPLETING THE A 2710 1800 HOUR INSPECTION, THE CABIN OVERHEAD CROSS FRAMES, BOTH WERE FOUND CRACKED ON THE LEFT SIDE END FLANGE AREA. THE FWD FRAME FOUND CRACKED IN THE LOWER ATTACH FLANGE BEND RADII AND THE AFT FRAME FLANGE FOUND CRACKED AT THE LOWERFeb 26, 2018 · N270SL · Bolkms BK117B2 · Fuselage Main, StructureSDR QMLA2017101717112Fire Warning · false activationHEARD A SINGLE CHIME. 2 MINUTES LATER, THE CHIME RETURNED CONSTANTLY. THE NR 2 ENGINE FIRE LIGHT WAS ILLUMINATED. CHECKED INDICATIONS, STARTED A TURN AND STARTED TO SLOW DOWN. THE TURN WAS TO CHECK FOR SMOKE. NO SMOKE. AFTER ABOUT 30 SECONDS THE CHIME STOPPEDOct 17, 2017 · N345K · Bolkms BK117B2 · Fire DetectionSDR QMLA2017101117106Blade · crackedCRACK IN THE INBOARD LEADING EDGE EROSION PROTECTIVE SHELL AT THE SPLICE JOINT, UNDER THE PU TAPE. THIS WAS FOUND DURING A SCHEDULED MAINTENANCE EVENT. THE AIRCRAFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION AWAITING REPLACEMENT MAIN ROTOR BLADES.Oct 11, 2017 · N270SL · Bolkms BK117B2 · Main Rotor BladesSDR QMLA2017091817094Engine · making metalDURING CRUISE FLIGHT, THE NR 2 ENGINE CHIP LIGHT ILLUMINATED ALONG WITH MASTER CAUTION LIGHT. ATTEMPTED TO BURN CHIP IAW RFM AND CHIP DID NOT BURN. ABORTED FLIGHT, DECLARED AN EMERGENCY. PLACED THE NR 2 ENGINE TO GROUND POSITION. NO OTHER ABNORMAL INDICATIOSep 18, 2017 · N64UP · Bolkms BK117B2 · Engine (Turbine/Turboprop)SDR QMLA2017030317024Governor · out of adjustAFTER TAKEOFF AND BEFORE REACHING CRUISE ALTITUDE, THE PILOT NOTICED THE ROTOR RPM AND ENGINE NR 1 N2 WERE ON THE HIGH SIDE (RED LINE) AND ENGINE NR 2 N2 WAS IN THE GREEN ARC. ATTEMPTED TO LOWER THE RPM'S BY USING THE BEEP TRIM SWITCH, BUT COULDN'T GET THE RPMMar 3, 2017 · N355AM · Bolkms BK117B2 · Turbine GovernorSDR QMLA2017022217021Splice · crackedCRACK FOUND IN SPLICE WHILE PERFORMING SCHEDULED MAINTENANCE ON AIRCRAFT. NO EVIDENCE OF ANY NICKS OR DAMAGE THAT MIGHT HAVE CAUSED CRACK. SUSPECT CRACK WAS CAUSED BY FATIGUE.Feb 22, 2017 · N154AM · Bolkms BK117B2 · Rotorcraft Tail BoomSDR HDNA724312160001Wire · unsecureON STARTUP, THE NR 2 ENGINE FIRE LIGHT FLICKERED. TECHNICIAN FOUND WIRE 2WC2A20 AT PIN C ON WARNING LIGHT UNIT. REPOSITIONED AND SECURED WIRE AT WARNING LIGHT UNIT, PERFORMED FUNCTIONAL TEST IAW MM-92-116, 92-119. NO FURTHER DEFECTS NOTED.Dec 29, 2016 · Bolkms BK117B2 · Fire Protection System WiringSDR QMLA2016120616138Gearbox · making metalDURING RUN UP OF AIRCRAFT FOR A FLIGHT, TAIL ROTOR CHIP LIGHT ILLUMINATED. PILOT ABORTED TAKEOFF AND CALLED MECHANIC. MECHANICS INSPECTION OF TAIL ROTOR CHIP DETECTOR REVEALED A 3MM METAL CHIP IDENTIFIED AS CATEGORY E INDICATING A SIGNIFICANT FAILURE.Dec 6, 2016 · N64UP · Bolkms BK117B2 · Tail Rotor GearboxSDR 3D9A2016102500007Connector · dirtyMAIN TRANSMISSION NR 1 OIL PRESSURE IN YELLOW, WITH NO WARNING LIGHT. RETURNED TO BASE. CLEANED THE CONNECTOR ON THE NR 1 OIL PRESSURE TRANSDUCER. OPS CHECKED GOOD DURING GROUND RUN.Oct 24, 2016 · N401MF · Bolkms BK117B2 · Main Rotor Drive System WiringSDR QMLA2016100316114Fire Warning · illuminatedNR 2 ENGINE FIRE LIGHT ILLUMINATED.Oct 3, 2016 · N117MK · Bolkms BK117B2 · Fire DetectionSDR QMLA2016092116107Frame · crackedDURING AIRFRAME ZONE 6 INSPECTION, A SMALL CRACK WAS DISCOVERED IN THE TAILBOOM AFT FRAME. CRACK IS LOCATED ON THE RIGHT SIDE AT THE SMALL LIGHTENING HOLE AND IS APPROX 1/4 INCH IN LENGTH PROPAGATING HORIZONTALLY THROUGH THE LIGHTENING HOLESep 21, 2016 · N238BK · Bolkms BK117B2 · Rotorcraft Tail BoomSDR QMLA2016090416102Warning Light · intermittentNR 2 ENGINE FIRE LIGHT ILLUMINATED INTERMITTENTLY.Sep 4, 2016 · N117MK · Bolkms BK117B2 · Fire DetectionSDR QMLA2016080516090Gearbox · making metalWHILE PERFORMING SCHEDULED INSPECTION. DISCOVERED FOUR SMALL METAL FLAKES ON INTERMEDIATE GEARBOX CHIP DETECTOR. NOT NUMEROUS OR LARGE ENOUGH TO CAUSE A CAUTION LIGHT TO ILLUMINATE. NO METAL DEBRIS ALLOWED IAW MAINTENANCE MANUAL. GEARBOX REMOVED FROM AIRCAug 5, 2016 · N154AM · Bolkms BK117B2 · Tail Rotor GearboxSDR QMLA2016052816056Wheel · seizedAFTER COMPLETING PATIENT TRANSFER & APPROX 10 MINUTES FROM BASE, ACFT AC UNIT WAS TURNED ON. IMMEDIATELY A PECULIAR SMELL WAS NOTICED BY CREW, IN THE AFT CABIN. AC UNIT WAS TURNED OFF & THE SMELL STOPPED. LANDED AT BASE & NOTIFIED MECHANIC.May 28, 2016 · N355AM · Bolkms BK117B2 · Cabin Cooling SystemSDR QMLA201602216009Drain Valve · failedAFTER TAKEOFF, NURSE IN THE BACK THOUGHT SHE SMELLED FUEL FUMES. LANDED AT NEAREST AVAILABLE SITE, AIRPORT, WITHOUT FURTHER INCIDENT..Feb 22, 2016 · N64UP · Bolkms BK117B2 · Aircraft Fuel SystemSDR HDNA201511030001Skin · crackedTAIL BOOM LT SIDE, JUST ABOVE THE LE OF HORIZONTAL STABILIZER CRACKED IN STIFFENER. UPON REMOVAL OF STIFFENER PN 117-30252.17 FOUND 4 ADDITIONAL CRACKS IN TAIL BOOM SKIN AROUND HORIZONTAL STABILIZER CUT OUT. TAIL BOOM BEING SHIPPED FOR REPAIR.Nov 3, 2015 · N317UH · Bolkms BK117B2 · Rotorcraft Tail BoomSDR QMLA2015100815094Radio · fireAT APPROX 1539 HOURS ON OCTOBER 8TH 2015 ACFT EXPERIENCED AN ELEC MALFUNCTION WHICH PRODUCED SMOKE IN THE COCKPIT, NR 1 VHF RADIO FAILED. IMMEDIATELY NOTICED AN ACRID SMELL IN THE COCKPIT, BEGAN TO TURN AROUND IN AN ATTEMPT TO RETURN TO BASE, WHEN OBSERVED A Oct 8, 2015 · N911SM · Bolkms BK117B2 · VHF Communications SystemSDR 3D9A2015091200006Engine · making metalNR 1 ENGINE CHIP LIGHT ILLUMINATED IN FLIGHT. MADE PRECAUTIONARY LANDING. DISCOVERED SMALL SLIVER ON REAR BEARING SUPPORT HOUSING CHIP DETECTOR. CATEGORIZED AND TYPED AS MINOR FUZZ IAW LTS101-750B-1, MM 72-00-00 PARA 20 C & D. RETURNED TO SERVICE IAW MFG, LSep 12, 2015 · N401DC · Bolkms BK117B2 · Engine (Turbine/Turboprop)SDR QMLA2015082715078Support · crackedWHILE COMPLETING TASK 26A0337-35, 12 MONTH TAIL CONE, WORN SKIN REPAIR, FOUND A CRACK ON THE FWD ECU MOUNT'S FWD SUPPORT. THE CRACK STARTS AT THE TOP OF THE SUPPORT & TERMINATES AT THE LOWER RIVET.Aug 27, 2015 · N64UP · Bolkms BK117B2 · Fuselage Miscellaneous StructureSDR QMLA2015081115069O-Ring · not seatedFOUND FUEL CAP ORING HAD ROLLED OFF OF ITS SEAT, RESEATED ORING & FITTED FUEL CAP. COMPLETED MX FLIGHT, FUEL CAP LEAK CHECKED GOOD.Aug 11, 2015 · N880SL · Bolkms BK117B2 · Fuel StorageSDR QMLA2015070315057Fire Detector · faultyPILOT NOTED ENG FIRE INDICATION, FOUND FALSE INDICATION DUE TO FAULTY FIRE DETECTOR. PILOT ALSO REPORTED FIRING NR 1 FIRE BOTTLE, INSPECTION REVEALED THAT THE FIRE BOTTLE DID NOT DISCHARGE. INSPECTION OF FIRE EXTINGUISHING SYS REVEALED NO DEFECTS.Jul 3, 2015 · N880SL · Bolkms BK117B2 · Fire DetectionSDR 3D9A2015062400005Connector · dirtyNUMBER 1 ENG OIL PRESSURE GAUGE WENT TO 0 BAR INDICATION, WITH NO CORRESPONDING WARNING LIGHT. RETURNED TO BASE. CLEANED PRESSURE TRANSDUCER CONNECTOR. OPERATIONS CHECKED NORMAL DURING GND RUN.Jun 24, 2015 · N401DC · Bolkms BK117B2 · Engine Oil System WiringSDR CA150420006Engine · malfunctioned(CAN) DURING AN AUTOROTATION FOR INITIAL PILOT TRAINING BOTH ENGINES THROTTLES WERE RETARDED TO IDLE. IMMEDIATELY FOLLOWING THE AUTOROTATION ENTRY NR 2 ENGINE N2 WAS SEEN DECREASING THROUGH 60 PERCENT AND N1 WAS NEAR 40 PERCENT. AN OVERSHOOT WAS COMMENCED WIApr 7, 2015 · Bolkms BK117B2 · Engine (Turbine/Turboprop)SDR 3D9A201502200004Doubler · crackedDURING DAILY PREFLIGHT CHECK, FOUND A 55 MM CRACK ON LEFT HAND TAIL BOOM TO VERTICAL FIN DOUBLER.Feb 20, 2015 · N401DC · Bolkms BK117B2 · Rotorcraft Tail BoomSDR CA150118002Antenna · unserviceable(CAN) DURING A DAILY INSPECTION THE ELT ANTENNA P/N ANT-406RW INSTALLED WAS DISCOVERED TO BE LOOSE AROUND THE IT`S BASE. UPON FURTHER INVESTIGATION CRACKS WERE FOUND IN THE ADHESIVE THAT BONDS THE INTERNAL COMPONENTS TO THE BASE. THE ELT HAS BEEN REMOVED.Jan 18, 2015 · Bolkms BK117B2 · Emergency Locator BeaconSDR QMLA2015011515005Rail · crackedWHILE PERFORMING AIRWORTHINESS CHECK FOUND CRACK ON RT SIDE CREST COWL RAIL AFT PORTION, LOOKED ON LT SIDE CREST COWL RAIL & FOUND ANOTHER CRACK.Jan 15, 2015 · N117AM · Bolkms BK117B2 · Aerodynamic FairingsSDR CA150112015Mount · cracked(CAN) DURING THE DAILY INSPECTION THE ENGINEER NOTICED WHAT LOOKED LIKE A CRACK ON THE FORWARD VHF ANTENNA BASE MOUNT PROVISIONS. UPON DETAILED INSPECTION IT WAS CONFIRMED CRACKED. THE ANTENNA MOUNTING PROVISIONS WERE INSTALLED IAW DWG 117-882064 AND DRAWING 1Jan 9, 2015 · Bolkms BK117B2 · Fuselage Main, Plate/SkinSDR 3D9A2014120600001Skin · cracked0.75 INCH CRACK ON FUSELAGE TAIL CONE SKIN UNDER TOP RIVET OF AFT UPPER ECU MOUNT DISCOVERED DURING 6000 HOUR/6 YEAR INSPECTION.Dec 2, 2014 · N401DC · Bolkms BK117B2 · Rotorcraft Tail BoomSDR 3D9A20141206003Fitting · corrodedCORROSION FOUND UNDER RT LOWER TORQUE MOUNT FITTING ON MAIN TRANSMISSION CASE.Nov 28, 2014 · N401DC · Bolkms BK117B2 · Main Rotor GearboxSDR 3D9A2014120600002Floor Panel · corrodedCORROSION FOUND ON CABIN FLOOR SKIN AROUND THREADED INSERTS INSTALLED AS PART OF STC SR00346DE.Nov 28, 2014 · N401DC · Bolkms BK117B2 · Fuselage Floor PanelSDR QMLA2014102714127Fire Detector · defectiveTHE PILOT NOTED UPON POWER UP THAT THE NR 2 ENG FIRE LIGHT ILLUMINATED DIMLY. TROUBLE SHOT & FOUND A FIRE DETECTOR PROBE TO BE THE CAUSE. THIS FIRE DETECTOR WAS REPLACED & THE ACFT RETURNED TO SERVICE WITH NO ADDITIONAL DEFECTS NOTED.Oct 27, 2014 · N117AM · Bolkms BK117B2 · Fire DetectionSDR QMLA2014080414098Unknown · odorUPON DEPARTURE, SMELLED FUEL, THOUGHT POSSIBLY FROM VENT DUE TO ACFT BEING TOPPED OFF. UPON TURNING ON AIR CONDITIONER, MED CREW IN COPILOTS SEAT OBSERVED A GRAY MIST FROM THE COPILOT SIDE AIR VENT, INITIALLY PERCEIVED AS SMOKE, BUT WITH AN ENG COMP WASH ODORAug 4, 2014 · N164AM · Bolkms BK117B2 · Air Distribution SystemSDR QMLA2014080214097Strut · damagedDURING A SCHEDULED INSPECTION OF THE COMPRESSOR BLADES, AN INLET HOUSING STRUT ON THE INTAKE WAS FOUND TO HAVE A SMALL CHUNK OF METAL MISSING FROM THE TOP & BOTTOM OF THE STRUT. THIS CHUNK WAS FOUND MISSING IN THE RADIUS OF THE STRUT. THIS ENG WAS REMOVED & Aug 2, 2014 · N64UP · Bolkms BK117B2 · Turbine Engine Air Inlet SectionSDR QMLA2014072214088Seal · wornDURING DAILY AIRWORTHINESS CHECK, NOTICED EXCESSIVE NOISE & HORIZONTAL PLAY IN M/R MAST AT TRANSMISSION UPPER BEARING AREA WHEN SHAKING M/R BLADES. DURING INVESTIGATION OF THE MAST AFTER REMOVAL, EXCESSIVE WEAR WAS EVIDENT AT THE UPPER SEAL RUNNER & WEAR INDIJul 25, 2014 · N911KD · Bolkms BK117B2 · Main Rotor GearboxSDR CA140619011Blade · cracked(CAN) DURING A DAILY INSPECTION OF THE T/R BLADES IT WAS NOTED THAT A HAIR LINE CRACK WAS VISBLE NEAR THE ROOT OF THE BLADE S/N 393. UPON FURTHER INVESTIGATION USING A 10X MAGIFIER THE CRACK SPAND THE CORD LENGTH OF THE BLADE. THE AIRCRAFT WAS REMOVED FROM SERJun 19, 2014 · Bolkms BK117B2 · Tail Rotor BladesSDR 15MA20140330001Probe · false indicationUPON TAKEOFF, FIRE INDICATION ON NR 1 ENGINE FLICKERED ON AND OFF FOR 5-10 SECONDS, PILOT TURNED AND LANDED, FIRE INDICATION GONE UPON LANDING, LANDED WITHOUT INCIDENT, TROUBLESHOOTING INDICATED LOWER AFT FIRE DETECTION PROBE CREATED WARNING PREMATURELY, REPLAMar 30, 2014 · N217M · Bolkms BK117B2 · Fire Detection
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