MBB BK 117 A-3

Service difficulty reports · 719

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 = 'BK117A3'
  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 2000ZZZX739Seal · leakingSEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 2000ZZZX738Seal · leakingSEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX737Seal · leakingSEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX736Bearing · corrodedBREARING HAS EXCESSIVE PITTING. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX735Seal · damagedLABYRINTH SEAL EXCESSIVELY GROOVED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine SectionSDR 2000ZZZX733Spring · wornSPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX732Seal · wornSEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX731Vane · crackedVANE CRACKED BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 2000ZZZX730Cover · wornCOVER WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 2000ZZZX729Housing · wornHOUSING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 28, 1999 · N528SF · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 99ZZZX4073Speed Pickup · inoperativeSPEED PICKUP INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 18, 1999 · N158BK · Bolkms BK117A3 · Main Rotor Indicating SystemSDR 99ZZZX3807Bolt · wornBOLT WORN BEYOND SERVICEABLE LIMITS.Jul 9, 1999 · N158BK · Bolkms BK117A3 · Tail Rotor HeadSDR 2000ZZZX734Shroud · damagedEXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 8, 1999 · N528SF · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX2838Idler Gear · looseDISASSEMBLY OF ENGINE REVEALED METAL IN BOTTOM OF GEARBOX ASSY. INSPECTION REVEALED IDLER GEAR TO HAVE ONE EACH NUT MISSING FROM ASSY BOLTS AND 3 EACH NUTS EITHER DAMAGED OR PARTIALLY MISSING PIECES. TORQUE ON SEVERAL REMAINING BOLTS WERE LOOSE. SUBMITTER RJun 30, 1999 · N4493X · Bolkms BK117A3 · Turbine Engine Reduction GearSDR 99ZZZX3048Actuator · failedACTUATOR WILL NOT OPEN WHEN 85 POUNDS SHOP AIR APPLIED. LEVER FAILED TO MOVE REF: MCN 136. REMOVED AND REPLACED.Jun 21, 1999 · N117MH · Bolkms BK117A3 · Compressor Bleed ControlSDR 99ZZZX3046Exciter · failedCIRCUIT BREAKER TRIPS WHEN ATTEMPTING TO START ENGINE.Jun 16, 1999 · N1140H · Bolkms BK117A3 · ExciterSDR 99ZZZX3045Indicator · malfunctionedINDICATOR TUMBLES DURING 45 DEGREE BANK. MCN 130. REMOVED AND REPLACED.Jun 15, 1999 · N1140H · Bolkms BK117A3 · Attitude Gyro and Indicating SystemSDR 99ZZZX3868Transducer · malfunctionedDURING FLIGHT, TQ READS 20 PERCENT AT ITS HIGHEST POINT. WITH AC MASTER ON, THE TQ INDICATOR SPINS CLOCKWISE 2 TIMES, THEN FLICKERS BELOW ZERO. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jun 10, 1999 · N625MB · Bolkms BK117A3 · Engine BMEP/Torque IndicatingSDR 99ZZZX2561O-Ring · leakingTROUBLESHOT SYSTEM PER ENGINE MM. FOUND AIR LEAK ON TEMP COMPENSATOR. REMOVED 5 O-RINGS, PN M8324811-904. INSTALLED 5 NEW O-RINGS, P/N SAME. PERFORMED 7 GROUND RUNS ON NR 1 ENGINE. PERFORMED MAXIMUM CONTINUOUS OE 1 ON NR 1 ENGINE. TOPPED NR 1 PER ACFT TEJun 3, 1999 · N911MZ · Bolkms BK117A3 · Reciprocating Engine Cylinder SectionSDR 99ZZZX2560Actuator · malfunctionedWHILE AT CRUISE FLIGHT DURING A HOSPITAL TRANSPORT WITH A PATIENT ON BOARD, N1 INCREASED TO 102.5 DEGREES AT 60 PERCENT. TOT ALSO INCREASED APPROXIMATELY 70 PERCENT TO 680 DEGREES. REDUCED POWER TO MAINTAIN N1 LESS THAN 102 PERCENT. NOTIFIED THE CREW OF THMay 20, 1999 · N1140H · Bolkms BK117A3 · Compressor Bleed ControlSDR 2000ZZZX428Spring · wornSPRING WORN BEYOND SERVICEBLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.May 3, 1999 · N117MA · Bolkms BK117A3 · Turbine SectionSDR 2000ZZZX427Seal Ring · wornSEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.May 3, 1999 · N117MA · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX2884Indicator · fluctuatesNG INDICATOR FLUCTUATES. REF: MCN 63. REMOVED AND REPLACED.Apr 28, 1999 · N117CH · Bolkms BK117A3 · Engine RPM Indicating SystemSDR 99ZZZX2888Igniter · inoperativeNO POWER OUTPUT TO IGNITERS. EF: MCN 55. REMOVED AND REPLACED.Apr 22, 1999 · N117MH · Bolkms BK117A3 · ExciterSDR HEEA061810Receiver · malfunctionedAFTER WARM-UP, THERE IS CONSTANT FEEDBACK.Apr 8, 1999 · N911NC · Bolkms BK117A3 · VHF Communications SystemSDR 99ZZZX3790Shaft · damagedSECONDARY DAMAGE TO LAB SEAL FAILURE. REPALCED WITH NEW UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES: 4270.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 99ZZZX3789Seal Ring · wornSEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX3788Spring · wornSPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX3787Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX2330Shroud · damagedSECONDARY DAMAGE TO LAB SEAL FAILURE. EXCESSIVE GROOVES RESULTING FROM GP BLADE DAMAGE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 99ZZZX2329Blade · damagedSECONDARY DAMAGE TO LAB SEAL FAILURE. EXCESSIVE DAMAGE TO KNIFE EDGES AND GP BLADES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES: 1,061.9.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 99ZZZX2328Labyrinth Seal · warpedLABYRINTH SEAL HAD EXCESSIVE WARPAGE WHICH RESULTED IN COLLATERAL DAMAGE TO THE GP ROTOR AND SHROUD. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 99ZZZX1802Seal Assy · damagedEXCESSIVE WARPAGE WHICH RESULTED IN COLLATERAL DAMAGE TO THE GP ROTOR AND SHROUD. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine Engine Compressor SectionSDR 99ZZZX1801Rotor Assy · damagedSECONDARY DAMAGE TO LAB SEAL FAILURE. EXCESSIVE DAMAGE TO KNIFE EDGES AND GP BLADES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. PART TC: 1,061.9.Mar 28, 1999 · N420MB · Bolkms BK117A3 · Turbine SectionSDR 99ZZZX3870Transducer · inoperativeTRANSDUCER INOPERATIVE. NO OIL PRESSURE INDICATION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 23, 1999 · N127HH · Bolkms BK117A3 · Engine Oil PressureSDR 99ZZZX3778Transducer · erraticTRANSDUCER ERRATIC. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 21, 1999 · N127HH · Bolkms BK117A3 · Engine Oil PressureSDR 99ZZZX2861Search Light · failedSEARCH LIGHT STUCK IN FULL EXTEND POSITION, WILL NOT RETRACT. REMOVED AND REPLACED.Mar 19, 1999 · N1140H · Bolkms BK117A3 · Exterior LightingSDR 99ZZZX2852Search Light · malfunctionedSEARCH LIGHT EXTENDS ONLY OCCASIONALLY. WILL EXTEND IF LAMP ASSY IF WIGGLED. REMOVED AND REPLACED.Feb 27, 1999 · N1140H · Bolkms BK117A3 · Exterior LightingSDR 99ZZZX3359Antenna · malfunctionedANTENNA REFLECTS POWER. REMOVED AND REPLACED.Feb 16, 1999 · N1140H · Bolkms BK117A3 · Communications SystemSDR 99ZZZX1252Loran · failedDISPLAY ON LORAN FAILING. REMOVED AND REPLACED.Jan 27, 1999 · N1140H · Bolkms BK117A3 · Long-Range Navigation (LORAN) SystemSDR HEEA060474Transducer · failedPRESSURE TRANSDUCER'S TORQUE INDICATION FELL TO ZERO.Jan 25, 1999 · N401PH · Bolkms BK117A3 · Engine BMEP/Torque IndicatingSDR 99ZZZX3869Bolt · wornBOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 21, 1999 · N117MV · Bolkms BK117A3 · Tail Rotor HeadSDR 20000406SH024Gyro · failedATTITUDE GYRO WILL NOT CAGE. VERY ERRATIC. REMOVED AND REPLACED. (X)Jan 14, 1999 · N312LS · Bolkms BK117A3 · Attitude Gyro and Indicating SystemSDR 99ZZZX783Bearing · corrodedBEARING REJECTED NEW OUT-OF BOX. EXCESSIVE CORROSION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 8, 1999 · N158BK · Bolkms BK117A3 · Starter-GeneratorSDR 99ZZZX782Bearing · corrodedBEARING REJECTED NEW OUT-OF-BOX. EXCESSIVE CORROSION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 8, 1999 · N158BK · Bolkms BK117A3 · Starter-GeneratorSDR 99ZZZX781Bearing · corrodedBEARING REJECTED NEW OUT-OF-BOX. EXCESSIVE CORROSION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 8, 1999 · N158BK · Bolkms BK117A3 · Starter-GeneratorSDR 99ZZZX780Bearing · corrodedCLUTCH BEARING REJECTED NEW OUT-OF-BOX. EXCESSIVE CORROSION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 8, 1999 · N158BK · Bolkms BK117A3 · Starter-GeneratorSDR 99ZZZX770Cap · crackedCAP CRACKED BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. THIS PART BEING RETURNED FOR PRODUCT INVESTIGATION.Jan 8, 1999 · N625MB · Bolkms BK117A3 · Main Rotor BrakeSDR 99ZZZX1695Seal · wornSEAL WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 12, 1998 · N428MB · Bolkms BK117A3 · Turbine Engine Combustion SectionSDR 99ZZZX2857Bolt · scoredMAIN BOLT SCORED. REMOVED AND REPLACED.Nov 10, 1998 · N117MH · Bolkms BK117A3 · Main Rotor Head
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