# Service difficulty reports: Alliedsign LTS101-750B-1

A list on [Alliedsign LTS101-750B-1](https://openairdocs.org/engine/alliedsign-lts101-750b-1.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 7 · 350 reports

- [SDR QMLA2023052620040](https://openairdocs.org/sdr/QMLA2023052620040.md): Tail Boom · cracked · May 8, 2023 · N880SL · Bolkms BK117B2 · Rotorcraft Tail Boom
  > DURING 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
- [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 CA190521024](https://openairdocs.org/sdr/CA190521024.md): Chip Detector · activated · Apr 29, 2019 · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > (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 REQUEST
- [SDR HDNA2019013100001](https://openairdocs.org/sdr/HDNA2019013100001.md): Wire Harness · shorted · Jan 30, 2019 · N317UH · Bolkms BK117B2 · Engine Bleed Air System Wiring
  > DURING 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, A
- [SDR QMLA2016050916047](https://openairdocs.org/sdr/QMLA2016050916047.md): Chip Detector · false activation · May 9, 2016 · N117J · Urocop BK117C1EURO · Turbine Engine Accessory Drive
  > AFTER PICKING UP THE PATIENT, ABOUT 3 MINS AFTER DEPARTURE, THE ENG 1 CHIP CAUTION LIGHT ILLUMINATED DURING CRUISE FLIGHT AT 1000’ ABOVE GND LEVEL. CONDUCTED THE ACFT CHECKLIST ACTIONS & DECLARED AN EMER WITH THE INTENT TO CONDUCT A PRECAUTIONARY LANDING. TH
- [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 QMLA2015100815094](https://openairdocs.org/sdr/QMLA2015100815094.md): Radio · fire · Oct 8, 2015 · N911SM · Bolkms BK117B2 · VHF Communications System
  > AT 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
- [SDR 3D9A2015091200006](https://openairdocs.org/sdr/3D9A2015091200006.md): Engine · making metal · Sep 12, 2015 · N401DC · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > NR 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, L
- [SDR QMLA2015081115069](https://openairdocs.org/sdr/QMLA2015081115069.md): O-Ring · not seated · Aug 11, 2015 · N880SL · Bolkms BK117B2 · Fuel Storage
  > FOUND FUEL CAP ORING HAD ROLLED OFF OF ITS SEAT, RESEATED ORING & FITTED FUEL CAP. COMPLETED MX FLIGHT, FUEL CAP LEAK CHECKED GOOD.
- [SDR CA150420006](https://openairdocs.org/sdr/CA150420006.md): Engine · malfunctioned · Apr 7, 2015 · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > (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 WI
- [SDR QMLA2015031315016](https://openairdocs.org/sdr/QMLA2015031315016.md): Bolt · sheared · Mar 13, 2015 · N427MA · Bell 222U · Main Rotor Head
  > DURING AN AIRFRAME ZONE 1 INSPECTION, FOUND ONE SIDE OF THE MR HUB, PN 222-012-101-107 SN A98, CORD WEIGHT MOUNT LOOSE. UPON REMOVAL OF THE NUT FROM THE LONG, ALL THREAD, PORTION OF THE MOUNT & THE WEIGHT ITSELF, FOUND ONE BOLT HEAD LAYING LOOSE UNDER THE WEI
- [SDR CA150118002](https://openairdocs.org/sdr/CA150118002.md): Antenna · unserviceable · Jan 18, 2015 · Bolkms BK117B2 · Emergency Locator Beacon
  > (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.
- [SDR CA150112015](https://openairdocs.org/sdr/CA150112015.md): Mount · cracked · Jan 9, 2015 · Bolkms BK117B2 · Fuselage Main, Plate/Skin
  > (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 1
- [SDR CA140619011](https://openairdocs.org/sdr/CA140619011.md): Blade · cracked · Jun 19, 2014 · Bolkms BK117B2 · Tail Rotor Blades
  > (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 SER
- [SDR QMLA2013030713033](https://openairdocs.org/sdr/QMLA2013030713033.md): Engine · making metal · Mar 7, 2013 · N217MC · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > CHIP LIGHT NR 2 ENGINE. REMOVED CHIP DETECTOR, DETERMINED TO BE A MINOR EVENT IAW MM. PERFORMED GROUND RUN FOR PRECAUTIONARY MEASURES, NO DEFECTS NOTED.
- [SDR QMLA2013021313027](https://openairdocs.org/sdr/QMLA2013021313027.md): Engine · failed · Feb 13, 2013 · N211SL · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > AT START OF APPROACH, HAD A PROUNOUNCED YAW FOLLOWED BY NR 2 ENGINE LOW LIGHT COMING ON, OBSERVED ENGINE RPM CLIMB TO 110 PERCENT AND DROP OFF, ENGINE RPM FELL BELOW 20 PERCENT AS WELL. AUDIBLE WARNING ACTIVATED, LOST NR 2 ENGINE. DIVERTED TO AIRPORT AND EXEC
- [SDR QMLA2013021313034](https://openairdocs.org/sdr/QMLA2013021313034.md): Fuel Control · malfunctioned · Feb 13, 2013 · N211SL · Bolkms BK117B2 · Fuel Control/Turbine Engines
  > AT APPROX 1030 AM WHILE STARTING AN APPROACH INTO THE HOSPITAL. HAD A PRONOUNCED YAW FOLLOWED BY THE NR 2 ENGINE LOW LIGHT COMING ON, OBSERVED THE ENGINE RPM CLIMB TO 110 PERCENT AND DROP OFF, ENGINE RPM FELL BELOW 20 PERCENT AS WELL. AUDIBLE WARNING WAS GOI
- [SDR QMLA2012111912185](https://openairdocs.org/sdr/QMLA2012111912185.md): Engine · stalled · Nov 19, 2012 · N355AM · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > DURING RETURN LEG OF FLIGHT, ENGINES BEGAN TO SURGE AND OSCILLATE WHILE IN LEVEL CRUISE FLIGHT. CONTINUED BACK TO BASE FOR A PRECAUTIONARY LANDING. WHILE IN HOVER TO HELIPAD AREA, ENGINE OSCILLATIONS INCREASED AND NR 2 ENGINE LOW AND MASTER CAUTION LIGHTS IL
- [SDR HDNA201210240005](https://openairdocs.org/sdr/HDNA201210240005.md): Shaft · failed · Oct 24, 2012 · N955ME · Bolkms BK117B2 · Engine Oil Cooler
  > SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.
- [SDR CA121016007](https://openairdocs.org/sdr/CA121016007.md): Compressor · stalled · Oct 14, 2012 · Bolkms BK117B2 · Turbine Engine Compressor Section
  > (CAN) WHILE ON A TRAINING MISSION, ABRUPT POWER CHANGES WERE BEING CONDUCTED WHEN COMPRESSOR STALL WAS NOTED ON THE NR 2 ENGINE. THE TRAINING MISSION WAS CANCELLED AND THE ACFT RETURNED TO BASE WITHOUT FURTHER INCIDENT. WHILE TROUBLESHOOTING THE COMPRESSOR
- [SDR HDNA201209090004](https://openairdocs.org/sdr/HDNA201209090004.md): Shaft · failed · Sep 9, 2012 · N955ME · Bolkms BK117B2 · Engine Oil Cooler
  > SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.
- [SDR QMLA2012082012136](https://openairdocs.org/sdr/QMLA2012082012136.md): Gearbox · making metal · Aug 20, 2012 · N880SL · Bolkms BK117B2 · Tail Rotor Gearbox
  > ACFT RECEIVED A TAIL ROTOR GEARBOX CHIP LIGHT UPON ENGINE START UP THAT COULD NOT BE CLEARED USING CHIP PULSE. LIGHT ILLUMINATED BEFORE TAKEOFF WAS INITIATED AND BOTH ENGINES WERE SHUTDOWN NORMALLY. UPON INSPECTION, FOUND T/R GREARBOX CHIP DETECTOR TO HAVE M
- [SDR HDNA201207300003](https://openairdocs.org/sdr/HDNA201207300003.md): Shaft · failed · Jul 30, 2012 · N955ME · Bolkms BK117B2 · Engine Oil Cooler
  > SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.
- [SDR CA120629012](https://openairdocs.org/sdr/CA120629012.md): Frame · cracked · Jun 28, 2012 · Bolkms BK117B2 · Rotorcraft Tail Boom
  > (CAN) DURING ROUTINE INSPECTION ENGINEER DISCOVERED 1" CRACK IN THE 10L FRAME. THE ACFT WAS IMMEDIATELY REMOVED FROM SERVICE. TAILBOOM REMOVED AND SENT FOR REPAIR.
- [SDR HDNA201206120002](https://openairdocs.org/sdr/HDNA201206120002.md): Shaft · failed · Jun 12, 2012 · N955ME · Bolkms BK117B2 · Engine Oil Cooler
  > SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.
- [SDR CA120523023](https://openairdocs.org/sdr/CA120523023.md): Panel · cracked · May 18, 2012 · Bolkms BK117B2 · Rotorcraft Tail Boom
  > (CAN) DURING A DAILY INSPECTION THE TAILBOOM IGB PANEL WAS ADDITIONALLY REMOVED TO CLEAN. THE ENGINEER CLEANING THE PANEL FOUND A SUSPECTED CRACK LEADING AWAY FROM ONE OF THE LOWER LT CAMLOCK RECEPTACLES. AFTER FURTHER INVESTIGATION WAS CONDUCTED IT WAS DETE
- [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 HDNA201205080001](https://openairdocs.org/sdr/HDNA201205080001.md): Shaft · failed · May 8, 2012 · N955ME · Bolkms BK117B2 · Engine Oil Cooler
  > SHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.
- [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 CA120404007](https://openairdocs.org/sdr/CA120404007.md): Starter Gen · malfunctioned · Apr 3, 2012 · Bolkms BK117B2 · Starter-Generator
  > (CAN) ON RETURN TRIP TO THE HOSPITAL GENERATOR FAILED IN-FLIGHT. ACFT LANDED AT THE CITY CENTER AIRPORT WITH NO FUTHER OCCURENCES. AFTER INVESTIGATION INTO THE STARTER/GENERATOR FAILURE, THE AME FOUND THAT THE STARTER/GENERATOR SHAFT HAD SHEARED. THE STARTE
- [SDR QMLA2012032012043](https://openairdocs.org/sdr/QMLA2012032012043.md): Engine · making metal · Mar 20, 2012 · N990SL · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > ENROUTE, HAD TWO NR 1 ENGINE CHIP LIGHTS AND WAS ABLE TO CLEAR WITH THE ZAPPER. THE THIRD CHIP LIGHT COULD NOT BE CLEARED, PILOT LANDED WITHOUT INCIDENT. NO ENGINE PARAMETERS INDICATED OUTSIDE OF THE NORMAL RANGE AT ANY TIME. MECHANIC FOUND TWO & THREE BEAR
- [SDR CA120229007](https://openairdocs.org/sdr/CA120229007.md): Engine · making metal · Feb 29, 2012 · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > (CAN) UPON LANDING NR 2 ENGINE CHIP LIGHT ILLUMINATED, ACFT SHUTDOWN. ENGINEER INSPECTED THE NR 2 SCAVENGE FILTER CHIP DETECTOR FOUND CHIP CLASSIFIED AS MINOR CATEGORY. DEBRIS AND CHIP DETECTOR CLEARED ACFT GROUND RUN RELEASED BACK TO SERVICE. UPON LANDING B
- [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 QMLA2012021712020](https://openairdocs.org/sdr/QMLA2012021712020.md): Engine · making metal · Feb 17, 2012 · N911SM · Bolkms BK117B2 · Engine (Turbine/Turboprop)
  > FOUND NR 2 ENGINE COMBUSTION DRAIN VALVE WAS NOT WORKING, REMOVED DRAIN FOR REPLACEMENT AND FOUND A PIECE OF METAL WEDGED INTO COMBUSTION DRAIN VALVE. METAL PIECE REMOVED FROM THE DRAIN VALVE IS APPROX. 0.278 L X 0.272 W X.028 THICK WITH 3 BROKEN EDGES AND
- [SDR CA120131010](https://openairdocs.org/sdr/CA120131010.md): Actuator · failed · Jan 30, 2012 · Bolkms BK117B2 · Fuel Control/Turbine Engines
  > (CAN) LINEAR ACTUATOR FAILED, UNABLE TO TRIM ENGINE. DURING TROUBLESHOOTING TEST FLIGHT. ACFT SAFELY RETURNED TO BASE. ACTUATOR WAS REMOVED.
- [SDR CA120130004](https://openairdocs.org/sdr/CA120130004.md): Engine · damaged · Jan 26, 2012 · Bolkms BK117B2 · Turbine Section
  > (CAN) DETECTED A GAS PRODUCER TURBINE RUB. DURING A 600 HR INSPECTION. ENGINE R & R WITH SERVICEABLE.
- [SDR CA111228004](https://openairdocs.org/sdr/CA111228004.md): Transmission · making metal · Dec 27, 2011 · Bolkms BK117B2 · Main Rotor Gearbox
  > (CAN) TRANSMISSION CHIP LIGHT ILLUMINATED DURING ENGINE SHUTDOWN AFTER FLIGHT BACK AT BASE. AFTER INSPECTION, AME FOUND METAL CHIP ON THE NR 1 CHIP DETECTOR. TRANSMISSION REMOVED FOR REPAIR.
- [SDR QMLA20110916001](https://openairdocs.org/sdr/QMLA20110916001.md): Door · corroded · Sep 16, 2011 · N990SL · Bolkms BK117B2 · Fuselage Main, Structure
  > CORROSION FOUND COMING FROM UNDER PROTECTOR PLATE ON EXTERIOR OF PANEL ASSY. (LT ENGINE DOOR) PANEL WAS REMOVED AND SENT TO VENDOR FOR REPAIR.
- [SDR CA110811008](https://openairdocs.org/sdr/CA110811008.md): Gearbox · making metal · Aug 10, 2011 · Bolkms BK117B2 · Turbine Engine Reduction Gear
  > SCAVENGE LINE CHIP DETECTOR AND OIL FILTER FOUND TO HAVE MINOR CLASSIFICATION OF METAL CONTAMINTATION. OIL SYS FLUSH AND FILTER CHANGE CARRIED OUT. POST TEST FLIGHT INSP REVEALED SATISFATORY RESULTS. AFTER 3.5 HOURS OF ENGINE OPERATION THE SYS WAS RE-INSPECTE
- [SDR QMLA2011060411062](https://openairdocs.org/sdr/QMLA2011060411062.md): Indicator · fluctuates · Jun 4, 2011 · N1174U · Bolkms BK117B2 · Engine BMEP/Torque Indicating
  > MADE THE FIRST LEG FROM BASE TO HOSPITAL, LANDED FINE, KEPT BOTH ENGINE RUNNING AT IDLE, PATIENT LOADED, READY TO GO, HOVER CHECK WITH BOTH ENG NR 1 & NR 2 TORQUE NEEDLE MATCH AT 60 PERCENT, MAX PERFORMANCE TAKEOFF TO ABOUT 150FT OGE, ENG NR2 TORQUE GAUGE DROP
- [SDR QMLDML0371](https://openairdocs.org/sdr/QMLDML0371.md): Mast · worn · May 23, 2011 · N330SL · Bolkms BK117B2 · Main Rotor Mast/Swashplate
  > MAIN ROTOR MAST WAS REMOVED FOR OTHER INSPECTIONS AND WAS FOUND TO HAVE FRETTING IN ZONE "G". AREA OF THE SEALING RING RUNNER FOR THE UPPER MAST SEAL.
- [SDR CA110519004](https://openairdocs.org/sdr/CA110519004.md): Link · broken · May 16, 2011 · Bolkms BK117B2 · Battery/Charger System
  > ACFT FAILED TO START. NO POWER WITH MASTER TURNED ON. TROUBLE-SHOOTING LED TO MAIN BATTERY VOLTAGE INDICATING 0 VDC ON MULTIMETER. BATTERY REMOVED AND LID OPENED TO INSPECT CELLS. ONE (1) CELL INTERCONNECTING TIE LINK FOUND BROKEN WITH INDICATIONS OF ARCIN
- [SDR QMLA2011041511047](https://openairdocs.org/sdr/QMLA2011041511047.md): Gearbox · making metal · Apr 15, 2011 · N1174U · Bolkms BK117B2 · Tail Rotor Gearbox
  > PILOT REPORTED A TAIL ROTOR CHIP LIGHT FLICKER AND THE LIGHT WENT ON SOLID AT LANDING. PILOT CALLED THE MECHANIC WHO INSPECTED THE CHIP DETECTOR AND FOUND A CHIP. MECHANIC THEN DRAINED THE GEAR BOX, SERVICED AND DID A 30 MINUTE GROUND RUN. INSPECTED THE CH
- [SDR CA110408005](https://openairdocs.org/sdr/CA110408005.md): Wire · broken · Apr 6, 2011 · Bolkms BK117B2 · Auto Flight System Wiring
  > (CAN) AFTER STARTUP & RUNNING ON FLIGHT IDLE THE HELICOPTER CREW EXPERIENCED A SHAKING & ROCKING IN THE AIRFRAME. CREW SHUTDOWN HELICOPTER WITHOUT INCIDENT & INSPECTED THE HELICOPTER. NO FAULTS WERE FOUND VISUALLY. HELICOPTER STARTED & SHAKING BEGAN ONCE AGA
- [SDR CA110406012](https://openairdocs.org/sdr/CA110406012.md): Control Unit · malfunctioned · Apr 4, 2011 · Bolkms BK117B2 · Engine BMEP/Torque Indicating
  > (CAN) SHORTLY AFTER ENTERING CRUISE FLIGHT THE PF NOTED A 5% TORQUE SPLIT. THE PF WAS ABLE TO SUCCESSFULLY MATCH THE TORQUES WITH THE COLLECTIVE TRIM SWITCH. A FEW MOMENTS LATER AFTER COMPLETING A CRUISE CHECK, THE PILOTS NOTED A LARGE TORQUE SPLIT IN EXCESS
- [SDR CA110330005](https://openairdocs.org/sdr/CA110330005.md): Blade · cracked · Mar 29, 2011 · Bolkms BK117B2 · Tail Rotor Blades
  > (CAN) UPON MAINTENANCE, THE TAIL ROTOR BLADE OUTER SKIN WAS FOUND CRACKED APPROXIMATELY 2.5" LONG ON A CHORDWISE PLANE-APPROXIMATELY 5.5" FROM THE BLADE ROOT.
- [SDR CA110323007](https://openairdocs.org/sdr/CA110323007.md): Blade · cracked · Mar 22, 2011 · Bolkms BK117B2 · Tail Rotor Blades
  > (CAN) SKIN CRACKED 4.25" LONG ON CHORD WISE PLANE, APPROX 5.5" FROM BLADE ROOT.
- [SDR CA110217002](https://openairdocs.org/sdr/CA110217002.md): Actuator · faulted · Feb 16, 2011 · Bolkms BK117B2 · Main Rotor Control
  > CSAS PITCH LIGHT WOULD NOT EXTINGUISH DURING GROUND TEST. PITCH ACTUATOR WAS DETERMINED AT FAULT - WITH CSAS SYS POWERED UP IT WAS POSSIBLE TO MANUALLY EXTEND AND RETRACT THE ACTUATOR FROM STOP TO STOP WHEN IT SHOULD HAVE BEEN INTERNALLY BRAKED. REPLACEMENT O
- [SDR 2011FA0000030](https://openairdocs.org/sdr/2011FA0000030.md): Bearing · damaged · Jan 18, 2011 · Engine (Turbine/Turboprop)
  > ENGINE, PREVIOUSLY O/H BY THIS REPAIR STATION AT ENGINE TIME 2351 TSN IN NOV 2009. ENG WAS RETURNED FOR WARRANTY CLAIM OF IT "MAKING METAL". UPON DISASSEMBLY OF THE ENG DISCOVERED THE PT RETENTION BEARING FOUND TO BE THE SOURCE OF METAL GENERATION. DAMAGE SE

Next page: https://openairdocs.org/engine/alliedsign-lts101-750b-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 engine_model_key = 'LTS101750B1'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/alliedsign-lts101-750b-1/reports

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