# Service difficulty reports: Messerschmitt BK 117 B-1

A list on [Messerschmitt BK 117 B-1](https://openairdocs.org/model/messerschmitt-bk-117-b-1.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 17 · 822 reports

- [SDR QMLA2024070120080](https://openairdocs.org/sdr/QMLA2024070120080.md): Flt Controls · malfunctioned · Jun 26, 2024 · N117J · Bolkms BK117B1 · Flight Control System
  > 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 IN BLADE NOISE FOLLOWED IMMEDIATELY BY AN UN-COMMANDED NOSE UP PITCH. THE ACFT WAS GREATER THAN 3
- [SDR QMLA2024052820055](https://openairdocs.org/sdr/QMLA2024052820055.md): Computer · unserviceable · May 28, 2024 · N117J · Bolkms BK117B1 · Flight Control System
  > 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 ROLL AXIS, AND A CHANGE OF CONTROL/TRIM FORCE FEEL IN THE CYCLIC. THERE WAS ALSO A VERY STRONG SMELL OF
- [SDR QMLA2023121520114](https://openairdocs.org/sdr/QMLA2023121520114.md): Unknown · unknown · Dec 15, 2023 · N117J · Bolkms BK117B1 · Air Distribution System
  > 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 THE AIRCRAFT ACCELERATED AND TRANSITIONED TO CRUISE FLIGHT, THE SMELL WENT AWAY, AND WAS NOT DETEC
- [SDR QMLA2023032720020](https://openairdocs.org/sdr/QMLA2023032720020.md): Unknown · unknown · Mar 27, 2023 · N117J · Bolkms BK117B1 · Engine (Turbine/Turboprop)
  > 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 ENG ILLIMUNATED. IMMEDIATLEY REDUCEDED COLLECTIVE AND ACCOMPLISED 360 DEGREE TURN BACK INTO WIND
- [SDR HDNA20230222001](https://openairdocs.org/sdr/HDNA20230222001.md): Swashplate · cracked · Feb 21, 2023 · N117CH · Bolkms BK117B1 · Main Rotor Drive System
  > 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.md): Starter Gen · failed · Sep 10, 2017 · N365CH · Bolkms BK117B1 · Starter-Generator
  > 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 AND VERIFIED. CONTINUED TO COLUMBIA REGIONAL AIRPORT. WRITE UP WAS MADE IN THE LOGBOOK AND MAINTENANCE
- [SDR M7FR170101](https://openairdocs.org/sdr/M7FR170101.md): Structure · corroded · Feb 13, 2017 · N509TJ · Bolkms BK117B1 · Rotorcraft Tail Boom
  > DURING PERIODICAL INSPECTION, IT WAS DISCOVERED THAT THE HORIZONTAL STABILIZER HAD SOME AREAS OF SUSPECTED SEVERE CORROSION. THE STABILIZER WAS REMOVED AND SENT FOR FURTHER EXAMINATION. IT WAS DETERMINED THAT THERE WERE MANY AREAS OF SEVERE CORROSION. IT WAS D
- [SDR QMLA2015121815111](https://openairdocs.org/sdr/QMLA2015121815111.md): Unknown · odor · Dec 18, 2015 · N117J · Bolkms BK117B1 · Air Distribution System
  > 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 COMPONENTS THAT HAVE OVERHEATED. NO DISCREPANCIES NOTED. GND RAN ACFT & TEST FLEW WITH NO ADDITIONAL
- [SDR HDNA20150413002](https://openairdocs.org/sdr/HDNA20150413002.md): Cowl Latch · mismanufactured · Apr 11, 2015 · N117CH · Bolkms BK117B1 · Engine Cowling System
  > 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 IMPROPERLY MANUFACTURED.
- [SDR QMLA2014121414139](https://openairdocs.org/sdr/QMLA2014121414139.md): Transponder · malfunctioned · Dec 14, 2014 · N156AM · Bolkms BK117B1 · ATC Transponder System
  > 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 HAD BEEN THE SOURCE OF THIS SMELL & WAS INOPERATIVE. PLACED THE TRANSPONDER ON ORDER & DEFERRED T
- [SDR QMLA2014051514054](https://openairdocs.org/sdr/QMLA2014051514054.md): Stringer · unserviceable · May 15, 2014 · N440SL · Bolkms BK117B1 · Rotorcraft Tail Boom
  > DURING C 0872 INSPECTION OF ACFT BATTERY, FOUND CHAFING ON OMEGA STRINGER ON TAIL BOOM BEHIND AFT BATTERY INSTALLATION. FURTHER INSPECTION ESTABLISHED THIS DAMAGE AS A MAJOR SCRATCH IAW SRM 51-10-00, 2-1. CHAFING WAS CAUSED BY INBD BATTERY ATTACH BOLT.
- [SDR QMLA2014040814033](https://openairdocs.org/sdr/QMLA2014040814033.md): Bracket · cracked · Apr 8, 2014 · N365CH · Bolkms BK117B1 · Fuselage Miscellaneous Structure
  > 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 THE TIME OF THIS SUBMISSION PENDING THE REPAIR.
- [SDR QMLA201403214030](https://openairdocs.org/sdr/QMLA201403214030.md): Drain · stuck · Mar 25, 2014 · N155SC · Bolkms BK117B1 · Engine Drains
  > FUEL ODOR WHEN CABIN HEAT TURNED ON.
- [SDR QMLA2014021814016](https://openairdocs.org/sdr/QMLA2014021814016.md): Unknown · malfunctioned · Feb 18, 2014 · N156AM · Bolkms BK117B1 · Hydraulic System, Main
  > 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 INDICATED FLIGHT HYD PRESS TO APPROXIMATELY 60 PSI. EXECUTED THE EMERGENCY PROCEDURE BY THE CHECKLIST &
- [SDR QMLA2014011014004](https://openairdocs.org/sdr/QMLA2014011014004.md): Frame · cracked · Jan 15, 2014 · N155SC · Bolkms BK117B1 · Rotorcraft Tail Boom
  > TAIL CONE LT OUTER FRAME CRACKED.
- [SDR QMLA2013110713161](https://openairdocs.org/sdr/QMLA2013110713161.md): Unknown · odor · Nov 7, 2013 · N155SC · Bolkms BK117B1 · Air Distribution System
  > 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 SHOWED NO DAMAGE. CENTER PANEL INSTRUMENTS WERE PULLED FROM THE PANEL AND INSPECTED. THE LIGHTING
- [SDR QMLA2013092013136](https://openairdocs.org/sdr/QMLA2013092013136.md): Doubler · cracked · Sep 20, 2013 · N170MC · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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, JUST FWD OF FRAME/STA 6135. THIS IS A COMMON DISCREPANCY ON THIS ACFT WITH A "ECS" INSTALLED. CO
- [SDR QMLA2012111912186](https://openairdocs.org/sdr/QMLA2012111912186.md): Guide · cracked · Nov 19, 2012 · N440SL · Bolkms BK117B1 · Fuselage Main, Attach Fittings
  > 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 4000MM. THIS ITEM WAS FOUND DURING AAIP INSPECTION. CENTER CREST COWL ATTACHES AT THIS POINT SO IF HA
- [SDR QMLA2012080312125](https://openairdocs.org/sdr/QMLA2012080312125.md): Line · ruptured · Aug 3, 2012 · N213AE · Bolkms BK117B1 · Hydraulic System, Main
  > DURING CRUISE, DETECTED A BURNING ODOR. SMOKE ENTERED COCKPIT FROM ABOVE. DECLARED AN EMERGENCY. SMELLING A SWEET ODOR AND CREW REPORTED HYDRAULIC FLUID COMING DOWN DOOR, WINDOWS AND SIDE OF ACFT. ACFT KEPT MAKING A SQUEALING NOISE FOLLOWED BY GYRATIONS AND
- [SDR 2A6R2012062929101](https://openairdocs.org/sdr/2A6R2012062929101.md): Shaft · sheared · Jun 29, 2012 · N117AP · Bolkms BK117B1 · Engine Oil Cooler
  > 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 INVESTIGATED AND DETERMINED THAT THE NR 2 TRANSMISSION DRIVEN OIL COOLER BLOWER WAS NOT ROTATING. DISASS
- [SDR 2A6R2012060700001](https://openairdocs.org/sdr/2A6R2012060700001.md): Rotor Shaft · cracked · Jun 6, 2012 · N117UC · Bolkms BK117B1 · Main Rotor Mast/Swashplate
  > UPON INSTALLATION OF MAIN ROTOR TRANSMISSION - EXCESSIVE VERTICAL PLAY WAS NOTED. UPON WITHDRAWL OF ROTOR MAST FROM GEARBOX FOR SPACER TUBE INSPECTION, A CRACK WAS NOTED ON ROTOR SHAFT. VERIFIED BY VISUAL 10 POWER MAGNIFICATION.
- [SDR QMLA2012052612089](https://openairdocs.org/sdr/QMLA2012052612089.md): Transmission · making metal · May 26, 2012 · N155SC · Bolkms BK117B1 · Main Rotor Gearbox
  > TRANSMISSION CHIP CAUTION ILLUMINATED 100' FROM BASE HELIPAD DURING APPROACH FOR LANDING. ACTIVATED CHIP PULSE SEVERAL TIMES AFTER LANDING AND DURING SHUTDOWN. THE TRANSMISSION CHIP CAUTION REMAINED ILLUMINATED, COMPLETED SHUTDOWN.
- [SDR QMLA2012051612082](https://openairdocs.org/sdr/QMLA2012051612082.md): Guide · out of adjust · May 16, 2012 · N440SL · Bolkms BK117B1 · Passenger/Crew Doors
  > 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.md): O-Ring · failed · Apr 12, 2012 · N213AE · Bolkms BK117B1 · Fuel Storage
  > 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. INSPECTED BEHIND THE INTERIOR WALLS IN THE AREA OF THE FUEL VENT TANK AND SHUT OFF VALVES FOR THE FUEL
- [SDR QMLA2012040912055](https://openairdocs.org/sdr/QMLA2012040912055.md): Fitting · cracked · Apr 9, 2012 · N365CH · Bolkms BK117B1 · Turbine Engine Oil System
  > 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.md): Engine · making metal · Feb 27, 2012 · N150KF · Bolkms BK117B1 · Engine (Turbine/Turboprop)
  > 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 DETECTOR WAS CLEANED AND A GROUND RUN PERFORMED WITH NO REPEAT OF THE CHIP LIGHT ILLUMINATED. AFTE
- [SDR QMLA2012020112016](https://openairdocs.org/sdr/QMLA2012020112016.md): Unknown · odor · Feb 1, 2012 · N213AE · Bolkms BK117B1 · Air Distribution System
  > JUST AFTER TAKEOFF, SMELLED FUEL THROUGHOUT THE CABIN. IMMEDIATELY ABORTED THE FLIGHT AND RETURNED TO BASE. PERFORMED A THOROUGH INSPECTION OF ACFT, NO DEFECTS WERE NOTED. THE FUEL ODOR COULD NOT BE DUPLICATED AND THE ACFT WAS RETURNED TO SERVICE.
- [SDR 2011FA0000625](https://openairdocs.org/sdr/2011FA0000625.md): Indicator · damaged · Sep 21, 2011 · N117AP · Bolkms BK117B1 · DME/TACAN System
  > 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 LLIGHT HAS BEEN CHANGED FROM "RED" TO "GREEN". MASTER CAUTION PANEL "RED" WARNING LIGHTS LOCATED IN TEH
- [SDR 2011FA0000620](https://openairdocs.org/sdr/2011FA0000620.md): Light · malfunctioned · Sep 21, 2011 · N117UC · Bolkms BK117B1 · Instrument Panel
  > 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 "RED" TO "GREEN". MASTER CAUTION PANEL FAILED DAYTIME VISIBILITY/READABILITY EVALUATION, "RED" LIGHTS
- [SDR 2011FA0000618](https://openairdocs.org/sdr/2011FA0000618.md): Indicator · damaged · Sep 21, 2011 · N170MC · Bolkms BK117B1 · DME/TACAN System
  > 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 WARNING LIGHT BARELY VISIBLE WHEN LIT AND THE COLOR OF THE LIGHT HAS BEEN CHANGED FROM "RED" TO "GREEN"
- [SDR UOHR2011009](https://openairdocs.org/sdr/UOHR2011009.md): Spar · cracked · Mar 8, 2011 · N150K · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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 THE VERTICAL FIN SPAR AT THE CAM LOC FASTENER. A TRAY IN THE VERTICAL FIN IS ALSO CRACKED AT THE
- [SDR QMLA2011012811020](https://openairdocs.org/sdr/QMLA2011012811020.md): Terminal · broken · Jan 29, 2011 · N155SC · Bolkms BK117B1 · Electrical Power System Wiring
  > 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. TB 811 PROVIDES AC GROUND FOR 3 AXIS P/R CSAS. WIRE BREAK WAS SUCH THAT INTERMITTENT CONTACT COUL
- [SDR QMLA2010102410069](https://openairdocs.org/sdr/QMLA2010102410069.md): Fillercap · missing · Oct 24, 2010 · N156AM · Bolkms BK117B1 · Fuel Storage
  > 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 MISSING NEW FUEL CAP INSTALLED ACFT RETURN TO SERVICE.
- [SDR QMLA2010101010066](https://openairdocs.org/sdr/QMLA2010101010066.md): Window · missing · Oct 10, 2010 · N440SL · Bolkms BK117B1 · Door Windows
  > 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 DID NOT NOTE THE WINDOW MISSING DURING ANY FLIGHTS. REPLACED WINDOW AND PUT ACFT BACK IN SERVICE.
- [SDR QMLA2010081110049](https://openairdocs.org/sdr/QMLA2010081110049.md): Warning Light · false activation · Aug 10, 2010 · N155SC · Bolkms BK117B1 · Hydraulic Indicating System
  > 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 HYD PACK, HYD PUMP, CEILING CONNECTOR PLUG, TRANSDUCER CONNECTOR PLUG. NO DISCREPANCIES NOTED. SOME
- [SDR QMLA2001070610029](https://openairdocs.org/sdr/QMLA2001070610029.md): Gyro · failed · Jul 6, 2010 · N155SC · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > 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. STANDBY DG CIRCUIT BREAKER POPPED. PERFORMED PRECAUTIONARY LANDING. INSPECTION SHOWED THE STANDBY GYR
- [SDR QMLA2010051810015](https://openairdocs.org/sdr/QMLA2010051810015.md): Wire · chafed · May 18, 2010 · N117J · Bolkms BK117B1 · Electrical Power System Wiring
  > 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 CORRESPONDING CHAFE AREA WAS FOUND JUST BELOW THE AIRFRAME PASS-THROUGH OF THE LT ENGINE POWER LEVE
- [SDR RMXA022220107217](https://openairdocs.org/sdr/RMXA022220107217.md): Guide · worn · Feb 22, 2010 · N170MC · Bolkms BK117B1 · Passenger/Crew Doors
  > 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 CONTINUED WITHOUT ANY FURTHER INCIDENT. MX REPLACED A WORN GUIDE PN 117-24273-2 & WORN CATCHER PN 117-242
- [SDR 2010F00012](https://openairdocs.org/sdr/2010F00012.md): Floor Skin · cracked · Jan 20, 2010 · N156AM · Bolkms BK117B1 · Fuselage Miscellaneous Structure
  > 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.md): Mast · corroded · Jan 20, 2010 · N156AM · Bolkms BK117B1 · Main Rotor Mast/Swashplate
  > 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.md): Fitting · cracked · Jan 16, 2010 · N117J · Bolkms BK117B1 · Tail Rotor Gearbox
  > DURING INSP OF TAIL ROTOR GEARBOX CHIP DETECTOR DISCOVERED CRACK IN VERTICAL FIN NOSE RIB AT TAIL ROTOR GEARBOX ATTACHMENT POINT. FURTHER INVESTIGATION REVEALED THAT TAIL ROTOR GEARBOX FITTING WAS ALSO CRACKED AT UPPER LT CORNER. ACFT WAS REMOVED FROM SERVIC
- [SDR RMXA011520107211](https://openairdocs.org/sdr/RMXA011520107211.md): Connector · dirty · Jan 15, 2010 · N117VU · Bolkms BK117B1 · Engine Oil System Wiring
  > 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 LANDING WAS PERFORMED. THE ELECTRICAL CONNECTORS WERE CLEANED, OIL INDICATING SYS OPERATED NORMALLY
- [SDR RMXA011120107144](https://openairdocs.org/sdr/RMXA011120107144.md): Warning Light · false activation · Jan 11, 2010 · N117AP · Bolkms BK117B1 · Engine (Turbine/Turboprop)
  > 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 DETECTOR. REINSTALLED CHIP DETECTOR PERFORMED PENALTY RUN, NO FURTHER WARNING LIGHTS.
- [SDR QMLA2009120309046](https://openairdocs.org/sdr/QMLA2009120309046.md): Fitting · cracked · Dec 3, 2009 · N117J · Bolkms BK117B1 · Rotorcraft Tail Boom
  > DURING ACFT AIRWORTHINESS INSP, DISCOVERED CRACK IN VERTICAL FIN NOSE RIB AT TAIL ROTOR GEARBOX ATTACHMENT POINT. FURTHER INVESTIGATION REVEALED THAT TAIL ROTOR GEARBOX FITTING WAS ALSO CRACKED AT UPPER LT CORNER. REPLACED FITTING AND NOSE RIB.
- [SDR QMLA2009102209034](https://openairdocs.org/sdr/QMLA2009102209034.md): Fitting · cracked · Oct 22, 2009 · N155SC · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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.md): Splice · cracked · Sep 14, 2009 · N117UC · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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 REMOVED AND A NEW REPLACEMENT WAS RIVETED IN.
- [SDR QMLA2009081109026](https://openairdocs.org/sdr/QMLA2009081109026.md): Lock · unserviceable · Aug 11, 2009 · N155SC · Bolkms BK117B1 · Control Column Section
  > 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 ABLE TO REMOVE COPILOT CYCLIC FROM MOUNT WITH SLIGHTEST OF EFFORT.
- [SDR RMXA080520097211](https://openairdocs.org/sdr/RMXA080520097211.md): Frame · cracked · Aug 5, 2009 · N117VU · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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 REQUESTED. THE REPAIR SCHEME WAS RECIEVED,APPROVED REPAIR WAS PERFORMED AND THE AIRCRAFT RETURNED TO S
- [SDR RMXA080420097217](https://openairdocs.org/sdr/RMXA080420097217.md): Skin · cracked · Aug 4, 2009 · N170MC · Bolkms BK117B1 · Rotorcraft Tail Boom
  > 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. CRACK WAS STOP DRILLED AND A REPAIR SCHEME REQUEST HAS BEEN SUBMITTED FROM THE MANUFACTURE FOR REPAIR.
- [SDR RMXA062620097217](https://openairdocs.org/sdr/RMXA062620097217.md): Blade · debonded · Jun 26, 2009 · N170MC · Bolkms BK117B1 · Main Rotor Blades
  > 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 SEPARATED FROM NR1 MAIN ROTOR BLADE. WHEN THE TAPE SEPARATED, IT ALSO PULLED UP SOME FILLER MATERIA

Next page: https://openairdocs.org/model/messerschmitt-bk-117-b-1/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 = 'BK117B1'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/messerschmitt-bk-117-b-1/reports

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