JASC 7714

Service difficulty reports · 1,357

Reports filed under 7714 · Engine RPM 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 = '7714'
  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 CA961021007Tachometer Box · shorted(CAN) TACH BOX FAILED WHILE ON VERY SHORT FINAL TO MOUNTAIN TOP LANDING AT 8000 FEET, AND 20 DEGREES CELSIUS. CAUSED ENGINE BLEED VALVE NOT TO CLOSE THEREBY ENGINE COMPRESSOR EXCEEDED NORMAL RED LINE. THE ENGINE WAS NOT ABLE TO MAINTAIN ROTOR RPM AND IT RAPIDAug 24, 1996 · Snias AS350BSDR 96ZZZX5842Triple Tach · intermittentINTERMITTENT N2 - NR 2 DROP OF 2 PERCENT AT 100 PERCENT.Aug 24, 1996 · N911MZ · Bolkms BK117A3SDR 96ZZZX4727Tach Generator · inoperativeTACHOMETER GENERATOR FAILED 10 HOURS AFTER OVERHAUL.Aug 14, 1996 · N340FP · Cessna 340ASDR CA960826050Bearing · wrong part(CAN) OEM USES NMB BEARINGS, BEARING REMOVED WAS NEW DEPARTURE.Aug 12, 1996SDR VTZA96294Tach Generator · failedIAD/ISP - FLT 6300 - DURING CRUISE AT 1830 HRS ON 8-8-96, MADE AN UNSCHEDULED LANDING DUE TO NR 2 RPM WENT TO ZERO. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REMOVED AND REPLACED TACHOMETER, GENERATOR, OPS CHECK OK. AIRCRAFT WAS RELEASEDAug 8, 1996 · N370MT · Bag JETSTM3201SDR MVH0064097Indicator · stickingTACHOMETER GAUGE STICKS.Jul 29, 1996 · N63CF · Aerosp SA365NSDR 96ZZZX3872Tachometer · defectiveREMOVED TACHOMETER FROM BOX. NEEDLE ON WRONG SIDE OF STOP.Jul 16, 1996 · N2969Q · Piper PA32300SDR AALA961022Cover · crackedIAD - FLT 845 - WHILE EN-ROUTE EWR-DFW - DIVERTED TO IAD DUE TO FUMES IN CABIN. LEFT ENGINE HAD AN UNUSUAL NOISE DURING FLIGHT. LANDED OVERWEIGHT AT IAD WITHOUT INCIDENT. REPLACED N1 TACH ACCESSORY HOUSING ACCESS COVER AND AIR CONDITIONING PACK FILTERS. PEJul 10, 1996 · N454AA · Doug DC982SDR M3HA96021Connector · dirtyHNL - FLT 301 - DURING CLIMB-OUT, NR 1 NH INDICATOR BECAME INOPERATIVE. AIRCRAFT RETURNED TO HNL. CLEANED CANNON PLUG ON NR 1 NH SENSOR. OPS CHECKED OK. (X)Jul 8, 1996 · N988MA · Aerosp ATR42320SDR QXEA9600234Np Probe · malfunctioningNR 1 ENGINE BEGAN SURGING 20 TO 80 PERCENT ON APPROCH TO SEA. ALL ENGINE INSTRUMENTS INDICATED THE SURGING ALONG WITH AIRCRAFT YAW. NR 1 ENGINE BROUGHT TO IDLE AND PROP WAS FEATHERED. AIRCRAFT LANDED IN SEA WITHOUT FURTHER PROBLEM. NR 1 NP PROBE REPLACED AJul 3, 1996 · N330PH · Dorner DO328100SDR 96ZZZX4184Indicator · malfunctionTACHOMETER GAVE A FALSE READING OF 105 PERCENT PERCENT DURING FLIGHT. REPLACED TACHOMETER.Jul 1, 1996 · N5366Y · Bolkms BO105SSDR 96ZZZX4345Tach Generator · shaft shearedTHE TACHOMETER GENERATOR FAILED UNDER NORMAL OPERATING CONDITIONS. THE SUSPECT CAUSE IS A SMALL O-RING FITTED ON THE DRIVESHAFT AND INSIDE THE ROTOR SHAFT IS AN UNSPECIFIED PART. (DOES NOT APPEAR IN PARTS BREAKDOWN.) THIS O-RING RESTRICTED THE SELF-CENTERINJun 24, 1996 · N11HW · Beech 58SDR 96ZZZX4343Tach Generator · inoperativeTHE TACHOMETER GENERATOR FAILED DURING NORMAL OPERATING CONDITIONS. THE SUSPECT CAUSE IS PHASE 'A' OPEN CIRCUIT, WITHIN STATOR WINDING.Jun 24, 1996 · N11HW · Beech 58SDR CA960624004Indicator · failed(CAN) TAKEOFF ABORTED DUE TO LOSS OF #2 ENGINE NH INDICATION. (NH - HIGH PRESSURE SPOOL ROTATION SPEED)Jun 12, 1996 · Aerosp ATR42300SDR RAIA960606Nh Indicator · stuckSTL - FLIGHT 7462 - RIGHT ENGINE NH WENT TO 106 PERCENT AND STUCK THERE. MAINTENANCE REPLACED THE RIGHT NH INDICATOR. GROUND RUN CHECKS GOOD. (M)Jun 9, 1996 · N425TE · Aerosp ATR42300SDR HEEA967364Indicator · sticksN1 NEEDLE STICKS BELOW 10% NORTH.Jun 5, 1996 · N363BH · Bell 206L3SDR HEEA967339Indicator · erraticERRATIC OPERATION FROM 0 TO 65%. SENT TO PRECISION AVIONICS & INST., INC. FOR INSPECTION AND REPAIR.Jun 5, 1996 · N1076Y · Bell 206L1SDR 96ZZZX3240Generator · failedPART FAILED AT CRUISE POWER. ENGINE OUT LIGHT ILLUMINATED WITH AUDIO IN HEADSET. RECOMMEND A TIME REPLACEMENT CRITERIA BE ESTABLISHED.May 29, 1996 · N2778R · Bell 206BSDR AWXA960245N1 Indicator · failedPHX - FLT 52 - PHX-SJD - AIR TURNBACK, NR 1 ENGINE N1 INDICATOR INOP DIGITAL AND ANALOG. REPLACED N1 INDICATOR. (M)May 24, 1996 · N302AW · Boeing 7373G7SDR 96ZZZX2870Tach/Generator · failedTHIS IS THE SECOND TACHOMETER/GENERATOR OF THIS MODEL THAT HAD LOOSE THROUGH-SCREWS EVEN THOUGH THEY WERE SAFELY WIRED. BOTH UNITS FAILED AND THE SAFETY WIRE WAS DONE AT THE MANUFACTURER. PART TOTAL TIME, 550.2 HRS, 24 MONTHS.May 10, 1996 · N4326C · Cessna 340ASDR 96ZZZX2869Tachometer · failedNEW TACHOMETER INSTALLED FROM CESSNA SUPPLIED BY B. F. GOODRICH. TACHOMETER FAILED WITHIN 1.0 HOURS. NEEDLE AT 1,500 RPM WITH ENGINE OFF. REMOVED CABLE AT ENGINE. TACHOMETER READS ZERO. REMOVED TACHOMETER, TURNED BY HAND, AND PUSHED LIGHTLY ON INPUT SHAFTMay 10, 1996 · N4991F · Cessna TU206BSDR HEEA967182Indicator · defectiveINDICATOR SLOW AND STICKING BETWEEN 0 TO 20%.May 9, 1996 · N27702 · Bell 206L1SDR HEEA967181Indicator · hangs upGP INDICATOR GAUGE TENDS TO HANG UP BELOW 20%.May 9, 1996 · N5005B · Bell 206L1SDR HEEA967169Indicator · erraticTURBINE NEEDLE ERRATIC AT LOW RPM.May 8, 1996 · N979BH · Bell 206L3SDR HEEA967145Indicator · needle splitTRIPLE TACH #1 AND #2 NEEDLE HAVE NEEDLE SPLIT. TIME SINCE REPAIR 6:35.May 8, 1996 · N33008 · Bell 412SDR 96ZZZX3613Indicator · failedORDERED EXCHANGE UNIT, BUT UNIT DOES NOT WORK PROPERLY (LIGHT WORKS, BUT DOES NOT ILLUMINATE GAUGE FACE).May 7, 1996 · N365SC · Aerosp SA365N1SDR 96ZZZX3602Indicator · defectiveINTERNAL LIGHT INOPERATIVE. LOOSE CONNECTION WHERE WIRE ENTERS INDICATOR. MOUNTING WIRE BREAKS CONTINUITY. REMOVED AND REPLACED.May 3, 1996 · N206MH · Bell 206L1SDR HEEA967068Indicator · sticks#1 NEEDLE INTERMITTENTLY STICKS THROUGHOUT SCALE; #2 NEEDLE INOPERATIVE.Apr 23, 1996 · N33008 · Bell 412SDR CA960507018Indicator · not indicating(CAN)PILOT REPORTED ENGINE OUT HORN AND ENGINE OUT LIGHT. NG TACH INDICATOR NOT INDICATING. ALL OTHER GAUGES READING NORMAL.Apr 23, 1996 · Bell 206L1SDR 96ZZZX3244Indicator · stickingTRIPLE TACHOMETER NR 2 NEEDLE STICKING. REMOVED AND REPLACED.Apr 22, 1996 · N117LU · Bolkms BK117B1SDR HEEA967039Indicator · inoperativeTURBINE NEEDLE INOPERATIVE AND PLUGS REVERSED.Apr 17, 1996 · N3207Q · Bell 206L3SDR 96ZZZX3247Indicator · needle sticksNR NEEDLE STICKING WHEN STARTING ENGINES, 21.8 HOURS SINCE REPAIR. REMOVED AND REPLACED.Apr 16, 1996 · N1140H · Bolkms BK117A3SDR RAIA960418Tach Generator · failedSTL - FLT NR 7280 - LEFT RPM WENT TO ZERO. MAINTENANCE REPLACED LEFT ENGINE TACH GENERATOR, PERFORMED GROUND RUNS OPERATIONAL CHECKS GOOD. (M)Apr 15, 1996 · N429AM · Bag JETSTM3201SDR 9608541161Tach Generator · malfunctionedDURING CLIMBOUT, THE NR 3 ENGINE N1, N2 AND NR 3 EPR BECAME ERRATIC, ALL OTHER INDICATIONS NORMAL. CREW FOLLOWED COCKPIT OPERATING PROCEDURES AND RETURNED TO DTW WITHOUT FURTHER INCIDENT. REPLACED THE N1 AND N2 INDICATORS. ALSO, REPLACED THE NR 3 N2 TACH GEApr 13, 1996 · N161US · Doug DC1040SDR 96ZZZX4612Screw · shortedBIL - FLT 5011 - PILOT REPORTED A 'FLASH' IN THE INSTRUMENT PANEL AND SMELLED WIRE INSULATION BURNED. BRASS SCREW BACKED OUT OF THE ENGINE TACHOMETER MOUNT AND CONTACTED THE HOT PORTION OF THE INDIRECT LIGHTING BULB. SECURED SCREW IN TACHOMETER MOUNT, LIGHTIApr 12, 1996 · N6344U · Gulstm 680FLSDR WTAA960072Indicator · erraticSMF - RIGHT ENGINE PROPELLER 'NP' INDICATION REPORTED ERRATIC DURING CLIMB-OUT. ALL OTHER ENGINE INDICATIONS NORMAL. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE CLEANED AND INSPECTED RIGHT PROPELLER 'NP' INDICATOR CANNON AND SWAPPED GAUGES FRApr 8, 1996 · N454UE · Emb EMB120RTSDR HEEA966942Indicator · defective#2 ENG. N2 NEEDLE STAYS BELOW #1 ENG AND ROTOR NEEDLES. SENT TO B.F. GOODRICH AEROSPACE FOR INSPECTION AND REPAIR.Apr 8, 1996 · N33008 · Bell 412SDR 96ZZZX3248Indicator · reads highNR TACHOMETER NEEDLE READING 15 PERCENT HIGH. REMOVED AND REPLACED.Apr 4, 1996 · N1140H · Bolkms BK117A3SDR HEEA966893Indicator · defectiveTRIPLE TACH NEEDLE SPLIT. TIME SINCE REPAIR 6:35.Apr 2, 1996 · N33008 · Bell 412SDR WRLA96016N1 Speed Sensor · intermittentDURING INITIAL TAKEOFF ROLL, FLIGHT CREW NOTED NR 3 ENGINE WOULD NOT ACCELERATE TO 100 PERCENT N1 SPEED. FLIGHT CREW ELECTED TO DISCONTINUE TAKEOFF ROLL, AND RETURN TO GATE FOR MAINTENANCE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERApr 1, 1996 · N9MMAS · Doug DC1030SDR AU960418Gear · faulty(AUS) ENGINE NG SPEED PICKUP GEAR PLATE RIVETS LOOSEApr 1, 1996 · Bolkms BK117B1SDR HEEA966884Indicator · fluctuatesAFTER ONE HOUR OF USE #2 NEEDLE STARTED TO FLUCTUATE.Mar 22, 1996 · N7170D · Bolkms BO105SSDR CA960513007Transducer · failed(CAN)ON APPROACH, THERE WAS A COCKPIT WARNING AND INDICATION OF LOSS OF TORQUE, APPARENTLY WITHOUT A DROP IN ENGINE POWER. TORQUE TRANSDUCER DEFECTIVE.Mar 20, 1996SDR 96ZZZX2401Connector Plug · pins strippedLEFT ENGINE TACHOMETER FAILED ON TAKEOFF ROLL. PRE-INSPECTION, CONNECTOR PLUG SECURED AND SAFETIED. IT WAS DISCOVERED THE LEFT TACHOMETER GENERATOR ELECTRICAL CONNECTOR PLUG ELECTRICAL PINS HAD STRIPPED. CONNECTOR PLUG REPLACED. AIRCRAFT RETURNED TO SERVICMar 20, 1996 · N6604C · Cessna 414ASDR VTZA96115Tach Generator · failedFLT NR 6320 - IAD-ISP - AFTER TAKEOFF, RETURNED TO IAD DUE TO THE LEFT RPM INDICATION FAILED. AIRCRAFT RETURNED TO IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE LEFT TACH GENERATOR. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)Mar 19, 1996 · N487UE · Bag JETSTM3201SDR 96ZZZX1943Tach Generator · brush wearTACHOMETER GENERATOR INTERNAL GEARS ARE WEARING PREMATURELY CAUSING BRUSHES TO FAIL. NEW REPLACEMENT PART FROM SHELF AVERAGED LESS THAN 100 HOURS TIS, BEFORE FAILURE.Mar 18, 1996 · N781TC · Cessna 421CSDR SABA960007Tach-Generator · failedFLT NR 5204 - CLT-PGV - A/C WAS APPROXIMATELY 30 MINUTES OUTBOUND WHEN THE LEFT ENGINE RPM INDICATOR FELL TO ZERO. ALL OTHER ENGINE INDICATIONS WERE NORMAL. THE CAPTAIN DECIDED TO RETURN TO CLT FOR REPAIRS TO BE MADE. MAINTENANCE FOUND THE LEFT ENGINE TACH-Mar 9, 1996 · N158PC · Bag JETSTM3101SDR GLBA96049Tachometer · malfunctionedHHH - CREW ABORTED TAKEOFF BECAUSE RIGHT RPM INDICATOR DROPPED TO ZERO. MAINTENANCE COULD NOT DUPLICATE. OPS CHECK WAS GOOD. (X)Mar 9, 1996 · N170GL · Beech 1900CSDR CA960503102Tach Box · shorted(CAN) SENSOR BOX THAT ACTIVATES ENGINE BLEED VALVE FAILED IN FLIGHT. FAILURE CAUSES BLEED VALVE TO REMAIN OPEN CAUSING REDUCED AVAILABLE ENGINE POWER. FAILURE WAS ACCOMPANIED BY BURNING ELECTRICAL SMELL.Mar 4, 1996 · Snias AS350BSDR 96ZZZM619N2 Indicator · malfunctionedFLT NR 7202 - KCLE/KMSP - AIRCRAFT ABORTED TAKEOFF AT 30 KNOTS DUE TO NR 1 ENGINE N2 OVERSPEED INDICATION. MAINTENANCE RESET N2 INDICATOR, INDICATOR PERFORMED NORMAL AT ALL ENGINE POWER SETTINGS. AIRCRAFT RELEASED FOR FLIGHT.Mar 1, 1996 · N305GB · Lkheed 10113851
Back to JASC 7714