JASC 6340

Service difficulty reports · 265

Reports filed under 6340 · Rotor Drive Indicating System, newest first.

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 jasc_code = '6340'
  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 QR9R2026091000001Transducer · fluctuates#2 XMSN PRESSURE INDICATION ON CPDS ERRATIC DURING GROUND RUN. INDICATION FLUCTUATED BETWEEN 0.0 AND 5.0 BAR RANDOMLY. REMOVED AND REPLACED #2 XMSN OIL PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-1.Sep 10, 2026 · Bolkms BK117C2SDR QR9R2026082400001Transmitter · faultedNO OIL PRESSURE OBSERVED ON TRANSMISSION NR 2 AFTER REACHING STABILIZED GROUND IDLE AFTER START OF ENGINE NR1. ABORTED THE START IAW CL. AVIONICS PERSONNEL PERFORMED BATTERY DISCONNECT/RESET. ATTEMPTED A START ON ENGINE NR 2, STILL NO OIL PRESSURE ON TRANSMISSAug 24, 2026 · Bolkms BK117C2SDR QR9R2026060400001Indicator · stuckTRIPLE TACH WOULD NOT MOVE AT IDLE DURING START RUN-UP. REMOVED AND REPLACED TRIPLE TACH IAW AMM 62-41-00, 4-3; MOC SUCCESSFULLY COMPLETED.Jun 4, 2026 · Bolkms BK117C2SDR QR9R2026052900001Transducer · faultyNO RISE IN #1 TRANSMISSION OIL PRESSURE AFTER STARTING. ONLY DISPLAYED STATIC INDICATION OF .2. REMOVED AND REPLACED #1 TRANSMISSION OIL PRESSURE TRANSDUCER IAW 63-41-00, 4-4. MOC SUCCESSFULLY COMPLETED.May 29, 2026 · Bolkms BK117C2SDR QR9R2026043000001Transducer · faultedNR 1 TRANSMISSION OIL PRESSURE .4 BAR, RESET, INDICATED 1.4 AND IMMEDIATELY DROPPED DOWN TO .4 AGAIN DURING START RUN-UP. REMOVED AND REPLACED #1 TRANSMISSION OIL PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-4. T/P MOC SUCCESSFULLY COMPLETED.Apr 30, 2026 · Bolkms BK117C2SDR QR9R2025121700001Transmitter · failedPILOT REPORTED MAST MOMENT EXCEEDANCE ABOVE 90% WHILE IN LEVEL FLIGHT AND STEADY SPEED. REPORTED MM MONITORING SYSTEM JUMPED BETWEEN VECTORIAL AND LINEAR WHILE IN FLIGHT ACCOMPANIED WITH A GONG. REMOVED AND REPLACED SENSOR SIGNAL TRANSMITTING UNIT IAW AMM 63-4Dec 17, 2025 · Bolkms BK117C2SDR QR9R2025112500001Transmitter · failedDURING ENG #1 START, MM INDICATION BEGAN TO MOVE PAST 77% REACHING THE MM EXCEEDANCE ONCE THE ENG REACHED IDLE. A TEST FLIGHT EVAL FOUND DURING TWO CONSECUTIVE STARTS OF #1 ENG; MAST MOMENT GAVE 3-4 AND 2 ERRONEOUS DEVIATIONS ABOVE 90%. ADDITIONAL 2 DEVIATIONSNov 25, 2025 · Bolkms BK117C2SDR QR9R2025101700001Spu · unreliableMAST MOMENT INDICATION UNRELIABLE DURING START RUN-UP. UNABLE TO REDUCE BELOW 8% WHEN CENTERED, ALSO JUMPED AROUND WHEN CYCLIC WAS NOT BEING MOVED. DURING TROUBLESHOOTING OF MAST MOMENT SYS, UPEAK, UPEAK1, AND UPEAK2 VOLTAGES WERE OUT OF TOLERANCE. SUBBED IN SOct 17, 2025 · Bolkms BK117C2SDR QR9R2025070200001Indicator · stuckTRIPLE TAC FAILED IN FLIGHT. NR STUCK IN POSITION AND WOULD NOT MOVE. BOTH N2 NEEDLES DID MOVE. REMOVED AND REPLACED TRIPLE INDICATO RPM IAW AMM 62-41-00, 4-3. MOC SUCCESSFULLY COMPLETED.Jul 2, 2025 · Bolkms BK117C2SDR QR9R2025052900002Transducer · failed#2 TRANSMISSION OIL PRESSURE GUAGE REDUCED TO 1.0 IN FLIGHT. REMOVED AND REPLACED #2 PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-4; MOC COMPLETED IAW RFM.May 29, 2025 · Bolkms BK117C2SDR QR9R2025052000001Indicator · stuck#1 ENGINE N2 STUCK AT 96%. SHUTDOWN ENGINES AFTER LANDING AND THE NEEDLE REMAINED AT 96%. ALL OTHER ENGINE INDICATIONS WERE NORMAL. A TEST FLIGHT EVAL FOUND BOTH NR AND #1 N2 NEEDLES ON TRIPLE TACH WERE INTERMITTENT. REMOVED AND REPLACED TRIPLE INDICATOR IAW AMay 20, 2025 · Bolkms BK117C2SDR QR9R2025043000001Indicator · stuck#1 ENGINE TRIPLE TAC POINTER STUCK IN POSITION AT ABOUT 101%. REMOVED AND REPLACED TRIPLE INDICATOR RPM IAW AMM 62-41-00, 4-3. MTP MOC SUCCESSFULLY COMPLETED.Apr 30, 2025 · Bolkms BK117C2SDR QR9R2025040900002Transducer · faulty#1 TRANSMISSION OIL PRESSURE DROPPED BELOW 1.0 BAR DURING TAKEOFF. REMOVED AND REPLACED TRANSDUCER IAW AMM 63-41-00, 4-4. MOC COMPLETED, NO FLUCTUATIONS OR ANOMALIES NOTED.Apr 9, 2025 · Bolkms BK117C2SDR QMLA2025032120038Warning Light · illuminatedTRANSMISSION CHIP LIGHT ILLUMINATEDMar 21, 2025 · N775AL · Bell 407SDR QR9R2025031400004Transducer · faulty#1 TRANSMISSION OIL PRESSURE DROPPED TO ZERO IN FLIGHT. REMOVED AND REPLACED TRANSDUCER IAW AMM 63-41-00, 4-4; MOC SUCCESSFULLY COMPLETED.Mar 14, 2025 · Bolkms BK117C2SDR QR9R2025031100002Transducer · faultyAT IIDLE (70% N1 + - 2) #2 TRANSMISSION OIL PSI WAS LESS THAN 1.0 BAR. TROUBLESHOOTING REVEALED #2 TRANSMISSION OIL PRESSURE TRANSDUCER BAD. REMOVED AND REPLACED TRANSDUCER IAW AMM 63-41-00, 4-4.Mar 11, 2025 · Bolkms BK117C2SDR QR9R2025030700002Transmitter · failedMAST MOMENT READING ON VEMD LANE 1 INOP DURING START RUN-UP. TROUBLESHOOTING FOUND THE SSTU FAILED DYN.KAL ON FUNCTIONAL TEST. REMOVED AND REPLACED SENSOR SIGNAL TRANSMITTING UNIT IAW AMM 63-42-00, 4-2.Mar 7, 2025 · Bolkms BK117C2SDR QR9R2025011700001Transducer · fluctuatesFOUR SEPARATE EVENTS OF #2 XMSN OIL PRESSURE FLUCTUATION IN FLIGHT BELOW 1.5 BAR AND AS LOW AS 0.7. NO ASSOCIATED WARNING OR CAUTION LIGHTS. REMOVED AND REPLACED #2 TRANSMISSION PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-4.Jan 17, 2025 · Bolkms BK117C2SDR QR9R2024101000004Transducer · fluctuatesIN FLIGHT, #2 TRANSMISSION OIL PUMP PRESSURE FLUCTUATED DOWN TO .3 BAR AND THEN BACK TO NORMAL. FLUCTUATED MULTIPLE TIMES IN FLIGHT. REMOVED AND REPLACED #2 TRANSMISSION OIL TRANSDUCER IAW AMM 63-41-00, 4-4. T/F COMPLETD IAW AMM 05-60-00, 6-12.Oct 10, 2024 · Bolkms BK117C2SDR QR9R2024071600001Transmitter · failedSENSOR SIGNAL TRANSMITTING UNIT WAS RECEIVED NEW FROM AIRBUS. DURING MAST MOMENT PART 2 ADJUSTMENT- UNABLE TO MAINTAIN MAST MOMENT MINIMIZED BELOW 10%. MAST MOMENT FLUCTUATES MORE THAN 10% AFTER BEING MINIMIZED AS LOW AS 3% ON THE GROUND AT FLIGHT IDLE. SUBBEDJul 16, 2024 · Bolkms BK117C2SDR QR9R2024020600001Pickup · failedTRIPLE TACH ROTOR INDICATED 0% RPM AFTER REACHING GROUND IDLE CONDITIONS. REMOVED AND REPLACED SPEED PICK-UP. MOC COMPLETED IAW AMM 62-41-00, 4-1.Feb 6, 2024 · Bolkms BK117C2SDR QR9R2023092000001Transducer · fluctuatesIN FLIGHT, #2 TRANSMISSION OIL PRESSURE WILL FLUCTUATE BETWEEN NORMAL, DOWN TO LESS THAN 1.5 BAR, THEN RETURN TO NORMAL. REMOVED AND REPLACED #2 TRANSMISSION PRESSURE TRANSDUCER, MOC SUCCESSFULLY COMPLETED.Sep 20, 2023 · Bolkms BK117C2SDR QR9R20220914002None · fluctuates#2 TRANSMISSION OIL PRESSURE SYSTEM FAILED DURING FLIGHT. DISCONNECTED, INSPECTED, CLEANED AND RESEATED TRANSMISSION PRESSURE TRANSMITTER IAW AMM 70-43-00-110-801-A01. DURING TEST FLIGHT EVALUATION, #2 XMSN OIL PRESSURE FLUCTUATED FROM 2.0 TO .9. REMOVED AND RSep 14, 2022 · Bolkms BK117C2SDR JBZA20220801001Transmitter · inoperativeCRUISE FLIGHT 1500' MSL MAIN TRANSMISSION OIL PRESSURE STARTED FLUCTUATING BETWEEN 1.1 & 2.8, MOMENTS LATER PRESSURE DROPPED TO ZERO, TRANSMISSION TEMPERATURE REMAINED NORMAL. ALL ENGINE INDICATIONS REMAINED NORMAL. MADE LANDING IN FIELD 6.5 NM SOUTHWEST OF KJul 29, 2022 · N315RX · Urocop EC135P2SDR QR9R20220629001Transducer · low pressureNO POSITIVE TRANSMISSION OIL PRESSURE AT GROUND IDLE ON ENGINE NUMBER 1. REMOVED AND REPLACED PRESSURE TRANSDUCER IAW AMM 63-41-00, 4-4. MOC SUCCESSFULLY COMPLETED.Jun 29, 2022 · Bolkms BK117C2SDR QR9R20220428002None · failedDURING AVIONICS CONFIGURATION OF THE RUN-UP PROCEDURES, WITH ENGINES AT IDLE, THE MAST MOMENT INDICATOR DRIFTED OFF THE CIRCULAR SCALE 2 TIMES AND THEN THE CIRCULAR SCALE DISAPPEARED COMPLETELY, IMMEDIATELY NOTIFIED MAINTENANCE, THE AIRCRAFT WAS SHUT DOWN, THEApr 28, 2022 · Bolkms BK117C2SDR QR9R20220422001None · pressure lossSTART ABORTED DUE TO TRANSMISSION OIL PRESSURE WAS AT 0.0 BARS AFTER STARTING #1 ENGINE. REMOVED AND INSTALLED NEW PRESSURE TRANSDUCER IAW 63-41-00, 4-4. TEST FLIGHT SUCCESSFULLY COMPLETED.Apr 22, 2022 · Bolkms BK117C2SDR QR9R20220401001Transducer · pressure loss#2 TRANSMISSION OIL PRESSURE REMAINED AT ZERO AFTER ENGINE START. REMOVED AND REPLACED #2 TRANSMISSION OIL PRESSURE TRANSDUCER. T/F MOC COMPLETED IAW RFM.Apr 1, 2022 · Bolkms BK117C2SDR QR9R20220223001Transducer · failedDURING FLIGHT, # 2 XMSN OIL PRESSURE WENT TO ZERO. REMOVED AND REPLACED NO. 2 TRANSMISSION OIL PRESSURE TRANSDUCER. MOC AND LEAK CHECK SUCCESSFULLY COMPLETED IAW 05-60-00 6-12.Feb 23, 2022 · Bolkms BK117C2SDR QR9R20211029008None · fault messageFLT #1, WHILE CONDUCTING NORMAL HOVER FLIGHT ON HOVER TAXI LANE, MAST MOMENT EXCEEDANCE MESSAGE RECEIVED. MM INDICATED VISUALLY ON CAD SCREEN 71% AT THE 7 O'CLOCK POSITION. WITH MM EXCEED CAD CAUTION MESSAGE, THEN RETURNED TO NORMAL FOR ABOUT 2 SECONDS THEN MMOct 29, 2021 · Bolkms BK117C2SDR QR9R20211021002Chip Detector · fault messageTRANSMISSION CHIP CAUTION LIGHT ILLUMINATED IN FLIGHT. MAINTENANCE REPLACED MAIN TRANSMISSION RH CHIP DETECTOR IAW AMM 63-41-00, 6-2.Oct 21, 2021 · Bolkms BK117C2SDR QR9R20210930003Transducer · faulty#2 XMSN PRESSURE INDICATION STAYED AT 0.0 ONCE ENGINE WAS STARTED RESULTING IN AN ABORTED TAKEOFF. #2 PRESSURE TRANSDUCER REPLACED IAW AMM 63-41-00, 4-4; GROUND RUN SUCCESSFULLY COMPLETED.Sep 30, 2021 · Bolkms BK117C2SDR 8HBR20211012033Dual Tachometer · fluctuatesENGINE SIDE OF DUAL TACHOMETER HAD INTERMITTENT INDICATION ISSUES.Sep 29, 2021 · N8340S · Robsin R22BETASDR 8HBR20210920027Dual Tachometer · fluctuatesENGINE SIDE OF DUAL TACHOMETER HAD INTERMITTENT INDICATION ISSUES.Sep 11, 2021 · N7155W · Robsin R22BETASDR 8HBR20210920029Dual Tachometer · fluctuatesENGINE SIDE OF DUAL TACHOMETER HAD INTERMITTENT INDICATION ISSUES.Sep 9, 2021 · N351JD · Robsin R22BETASDR 8HBR20210920028Dual Tachometer · fluctuatesENGINE SIDE OF DUAL TACHOMETER HAD INTERMITTENT INDICATION ISSUES.Sep 8, 2021 · N779SH · Robsin R22BETASDR YV3R2020111900392Horn · inoperativeCUSTOMER REPORTED HORN ASSEMBLY P/N: B320-6 IS INOPERATIVE.Nov 13, 2020 · Robsin R44SDR FKEA202008040353Indicator · inoperativeAIRCRAFT WAS HOVERING WHEN PILOT NOTICED THERE WAS NO ROTOR RPM INDICATION WITH NO WARNING INDICATION AIRCRAFT WAS LANDED AND FLIGHT WAS ABORTED.Jul 31, 2020 · N240SF · Bolkms BK117C2SDR 2020F00343Indicator · inoperativeAIRCRAFT WAS PULLED INTO A HOVER AND THE LOW ROTOR WARNING SOUNDED AND THE ROTOR RPM READ ZERO. AIRCRAFT LANDED AND FLIGHT WAS CANCELLED.Jul 17, 2020 · N440SF · Bolkms BK117C2SDR HEER20200604815Chip Detector · activatedCHIP SYSTEM FAULT CAUTION LIGHT ILLUMINATED IN FLIGHT. CHECKED DRIVE TRAIN HUMS NR 2 INPUT CHIP.Jun 3, 2020 · N935PH · Skrsky S92ASDR YV3R2020051800260Horn · inoperativeCUSTOMER REPORTED HORN ASSEMBLY P/N: B320-6 IN INOPERATIVE.May 1, 2020 · N888SN · Robsin R44SDR YV3R2020052000263Warning Horn · inoperativeCUSTOMER REPORTED LOW WARNING R.P.M WARNING HORN P/N: B320-6 WAS INOPERATIVE.Apr 29, 2020 · N888SN · Robsin R44SDR M3XA2020042303Sensor · dirtyPILOT REPORTED DURING CRUISE FLIGHT MAIN GEARBOX OIL PRESSURE INDICATED 0.1 BAR. MECHANIC TROUBLESHOT SYSTEM, CLEANED OIL PRESSURE SENSOR, INSPECTED AND CLEANED CONNECTOR TO SENSOR. PERFORMED OIL PRESSURE SENSOR FUNCTION CHECK WITH NO DEFECTS AND PERFORMED Apr 22, 2020 · N456MT · Urocop EC135P2SDR YV3R2020052000261Warning Horn · inoperativeCUSTOMER REPORTED LOW R.P.M WARNING HORN P/N: B320-6 WAS INOPERATIVE.Apr 21, 2020 · N888SN · Robsin R44SDR AC2A2020012483901Ring · unstakedDURING DAILY INSPECTION, NOTICED RIGHT SIDE MAIN GEARBOX CHIP DETECTOR NOT FULLY ENGAGED. UPON INVESTIGATION, FOUND RETENTION RING FOR CHIP DETECTOR HAD BECOME UN-STAKED FROM CHIP DETECTOR BODY.Jan 18, 2020 · N139FW · Agusta AB139SDR QMLA2019091019074Chip Detector · contaminatedSUPPLEMENTAL INFORMATION. WHILE ENROUTE TO HOSPITAL THE TRANSMISSION CHIP LIGHT CAME ON. A LANDING WAS CONDUCTED WITHOUT INCIDENT. VERY SMALL CHIP NOTED, DOCUMENTED AND SENT IN FOR ANALYSIS. THIS WAS THE FIRST FLIGHT SINCE THE AIR CONDITIONING DRIVE ADAPTER WASep 10, 2019 · N135AN · Urocop EC135P2SDR YV3R2019032300054Warning Horn · defectiveCUSTOMER REPORTED LOW RPM WARNING HORN P/N: B320-6 WILL NOT WORK UNTIL TAPPED WHEN TESTING.Mar 12, 2019 · Robsin R44RAVENIISDR O84A2018F00155Chip Detector · contaminatedM/R GEARBOX CHIP LIGHT ILLUMINATED DURING HOVER. MECHANIC INSPECTED CHIP PLUGS AND FOUND NORMAL FUZZ PER MM. CLEANED CHIP PLUGS AND PERFORMED 10 MINUTE HOVER CHECK AND FOUND NO DEBRIS ON CHIP PLUGS. RETURNED AIRCRAFT TO SERVICE.Dec 3, 2018 · N240SF · Bolkms BK117C2SDR M3XA2017092210Warning Light · false activationPL FOR TRANSMISSION CHIP LIGHT INDICATION. REMOVED, CLEANED, AND INSPECTED. ALL TRANSMISSION CHIP DETECTORS, NO CHIPS FOUND. REMOVED AND INSPECTED THE TRANSMISSION OIL FILTER, NO EVIDENCE OF DEBRIS, REINSTALLED FILTER. PERFORMED 20 MINUTE GROUND RUN. NO DESep 22, 2017 · N242MT · Bell 407SDR M3XA2017081205Pressure Switch · defectiveON SHORT FINAL TO THE HOSPITAL THE PILOT HAD A TRANSMISSION OIL PRESSURE WARNING LIGHT ILLUMINATE ON THE CAUTION WARNING PANEL. HE DECIDED TO DIVERT TO THE LOCAL AIRPORT, WHERE HE LANDED WITHOUT INCIDENT WITH A PATIENT ONBOARD, WHICH WAS TRANSPORTED BY GROUNDAug 12, 2017 · N762MT · Bell 407
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