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 HEEA0010309Tach Generator · worn driveTACH GENERATOR DRIVE SPLINE WORN.Jun 26, 1997 · N5759N · Bell 412SDR HEEA0010247Indicator · failedTRIPLE TACH IMPROPER READING GAUGE STICKS ON START UP. ALL THREE NEEDLES INOPERATIVE.Jun 25, 1997 · N3520T · Bolkms BO105SSDR HEEA0010215Tach Generator · wornTACH GENERATOR WORN SHAFT.Jun 25, 1997 · N293CA · Bell 412SDR HEEA0010210Indicator · defectiveTURBINE NEEDLE HAS STICKY OPERATION BELOW 20% AND TURBINE AND ROTOR NEEDLE WILL NOT TURN TO ZERO.Jun 23, 1997 · N2133X · Bell 206L1SDR HEEA0010207Tach Gen · inoperativeTACH GENERATOR INOPERATIVE.Jun 23, 1997 · N1077A · Bell 206L1SDR HEEA0010195Tach-Generator · failedTACH GENERATOR DOES NOT WORK AT 100% RPM.Jun 23, 1997 · N92MT · Bell 206L3SDR 97ZZZX3461Indicator · malfunction'ERR' DISPLAYED AT ALL TIMES.Jun 23, 1997 · N79MD · Aerosp SA365N1SDR HEEA0010184Indicator · sticksRPM INDICATOR STICKS UP TO 30%.Jun 19, 1997 · N911EB · Bolkms BO105SSDR HEEA0010168Indicator · erratic#2 TURBINE NEEDLE ERRATIC. OTHER NEEDLES HAVE STICKY OPERATION.Jun 19, 1997 · N3539T · Bolkms BO105SSDR HEEA0010166Tach Generator · failedTACH GENERATOR SHEARED SHAFT.Jun 19, 1997 · N2246Q · Bell 206L1SDR HEEA0010165Tachometer-Gener · inoperativeTACH GENERATOR INOPERATIVE.Jun 19, 1997 · N8197X · Bolkms BO105SSDR HEEA0010164Tach Generator · defectiveTACH GENERATOR CAUSING STATIC ON VHF.Jun 19, 1997 · N2275Q · Bell 206B3SDR CA970626014Tach Box · failure(CAN) BLEED VALVE ELECTRICAL SYSTEM TROUBLESHOOTING INDICATED TACH BOX WAS CAUSING BLEED VALVE LIGHT TO REMAIN ON. TACH BOX WAS REPLACED AND BLEED VALVE FUNCTIONED NORMALLY.Jun 19, 1997 · Snias AS350BSDR VTZA97326Tach Generator · failedFLT 6229 - IAD-PHL - DURING CLIMB, MADE AN UNSCHEDULED LANDING AT IAD DUE TO LEFT RPM INDICATION FAILED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED TACH GENERATOR. OPS CHECK OK. AIRCRAFT WAS RELEASED Jun 15, 1997 · N484UE · Bag JETSTM3201SDR 97ZZZX3456Pickup · malfunctionOVERSPEED SENSOR LIGHT STAYS ON.Jun 10, 1997 · N65MD · Aerosp AS365N2SDR PLGA970609ANp Sensor · malfunctionedBOS - FLT 4292 - AFTER TAKEOFF, THE RIGHT ENGINE TORQUE AND PROP SPEED STARTED FLUCTUATION. AIRCRAFT RETURNED TO BOS. MAINTENANCE REPLACED THE RIGHT NP SENSOR. ENGINE GROUND RAN WITH NO PROBLEMS FOUND. AIRCRAFT RETURNED TO SERVICE. (M)Jun 9, 1997 · N364BE · Saab 340BSDR CA970618018Bolt · missing(CAN) FLUCTUATING N1 CONDITION, N1 TACH GENERATOR WAS FOUND TO HAVE ONE OF THE THROUGH BOLTS AND THE DATA PLATE MISSING C1 DAMAGE RESULTING FROM THE DEPARTED BOLT AND DATA PLATE BEING INGESTED BY THE ENGINE.Jun 8, 1997 · Boeing 72727CSDR HEEA0010048Indicator · defectiveAFTER ONE HOUR OF USE, NEEDLE DROPS FROM NINETY PERCENT TO FIFTY PERCENT.Jun 5, 1997 · N911NC · Bolkms BK117A3SDR HEEA0010022Indicator · errorINDICATOR NEEDLE HAS EXCESSIVE FRICTION ERROR.Jun 3, 1997 · N2124Z · Bell 206L1SDR VTZA97295Tach Generator · failedCLE/IAD - FLT 6491 - DURING TAXI AT 1825 HOURS ON 5-27-97, AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS DUE TO LT RPM INDICATION INOPERABLE. MAINTENANCE INSPECTED AND REMOVED AND REPLACED TACH GENERATOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNEDMay 27, 1997 · N481UE · Bag JETSTM3201SDR WTAA970093Tach Generator · failedSFO - LEFT RPM FAILED ON TAKEOFF. AIRCRAFT RETURNED TO STATION. MAINTENANCE REPLACED LEFT TACH GENERATOR. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)May 26, 1997 · N421UE · Bag JETSTM3101SDR 97UAL900400Connector · looseABORTED TAKEOFF DUE TO ERRATIC NR 3 ENGINE N1 OPERATION. *S/D* REPLACED THE NR 3 N1 INDICATOR, THE FAN SENSOR AND REPAIRED A LOOSE HARNESS CONNECTION AT A TERMINAL BLOCK. THE PROBABLE CAUSE WAS THE INTERMITTENT WIRING DISCREPANCY.May 23, 1997 · N1816U · Doug DC1010SDR AU970594Tachometer · wrong part(AUS) INCORRECT TACHOMETER FITTED - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PARTMay 16, 1997 · Bell 47G3B1SDR VTZA97285Tach Generator · failedIAD/ABE - FLT 6253 - DURING CRUISE AT 2310 HOURS ON 5-15-97, MADE A SCHEDULED LANDING AT ABE WITH ONE DISCREPANCY WHICH WAS LT ENGINE RPM FAILED IN-FLIGHT. AIRCRAFT WENT TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED TACMay 15, 1997 · N473UE · Bag JETSTM3101SDR HAIHEEA9838Tach Generator · shaft shearedTACH GEN SHEARED SHAFT.May 13, 1997 · N7136H · Bolkms BO105SSDR CA970526009Tach Generator · pins missing(CAN) 2 ROLL PINS SECURING BACK COVER FOUND MISSING DURING INSPECTION ALLOWING COVER TO PUSH OUT. CLASSED AS RECURRENT FAILURE. FLEET CHECK TO BE CARRIED OUT AS THIS IS SECOND OCCURRENCE. SUBMITTER RECOMMENDS LOCKWIRING OF PINS AT OVERHAUL.May 13, 1997 · Dhav DHC6300SDR HAIHEEA9799Indicator · errorEXCESSIVE FRICTION ERROR ON LOW END. SENT TO MASCO FOR INSPECTION AND REPAIR.May 7, 1997 · N3892R · Bell 206L1SDR HAIHEEA9790Tachometer · reads highTACH READS HIGH.May 7, 1997 · N30PH · Beech 200BEECHSDR HAIHEEA9785Indicator · reads lowTRIPLE TACH ALL NEEDLES INDICATE LOW OUT OF TOLERANCE.May 7, 1997 · N3893L · Bell 412SDR HAIHEEA9784Indicator · reads highTRIPLE TACH INDICATOR READS HIGH AND EXCESSIVE FRICTION ERROR.May 7, 1997 · N3911L · Bell 412SDR HAIHEEA9776Indicator · reads lowTRIPLE TACH INDICATOR READS 3% LOW.May 7, 1997 · N3893P · Bell 412SDR HAIHEEA9717Indicator · failedENG N1 NEEDLE WENT TO ZERO AND ENGINE LIGHT CAME ON.Apr 30, 1997 · N217UC · Bolkms BK117B1SDR HAIHEEA9715Indicator · defectiveNO. 2 ENGINE N2 WILL NOT GO ABOVE 60% WHEN ENGINE IS AT 100%.Apr 30, 1997 · N81992 · Bolkms BO105SSDR HAIHEEA9714Indicator · defectiveINDICATOR STICKS AT 10% DURING START AND IS SLOW TO RISE.Apr 30, 1997 · N406EH · Bell 206L1SDR HAIHEEA9711Indicator · reads low#1 ENGINE TACH READS 2% LOW.Apr 30, 1997 · N217UC · Bolkms BK117B1SDR HAIHEEA9633Indicator · errorGAS PRODUCER INDICATOR EXCESSIVE FRICTION ERROR.Apr 29, 1997 · N5742H · Bell 206L1SDR CA970505008Tach Cable · damaged(CAN) TACH CABLE PROTECTIVE SLEEVE FOUND MELTED AND SEPARATED FROM THE ATTACH POINT TO THE ENGINE. REPLACED.Apr 25, 1997SDR HAIHEEA9589Transmitter · intermittentTACH TRANSMITTER INTERMITTENT FLUX BETWEEN 96-97 N1.Apr 24, 1997 · N6095S · Snias AS350B2SDR 97ZZZX3623Cable Case · bindingCABLE CASING ROUGH IN OPERATION. CABLE BINDS.Apr 24, 1997 · N317MC · Bolkms BK117C1SDR 97ZZZX3602Control Box · wornCONTROL BOX HAS INTERNAL WEAR FROM CABLE. STIFF IN OPERATION.Apr 24, 1997 · N317MC · Bolkms BK117C1SDR HAIHEEA9512Indicator · defectiveWHEN UNIT WAS FIRST CHECKED #1 NEEDLE AND #2 NEEDLE HAD 10% SPLIT THROUGHOUT SCALE. AFTER SEVERAL MINUTES OF OPERATION, THE SPLIT BETWEEN #1 AND #2 NEEDLE LESSENED TO 4% AND ONLY ABOVE 70% RPM. TIME SINCE REPAIR 100:10.Apr 23, 1997 · N3893P · Bell 412SDR HAIHEEA9397Indicator · sticksROTOR AND #1 NEEDLES STICK EXCESSIVELY AND #2 NEEDLE INDICATES HIGH OUT OF TOLERANCE AT 100% RPM.Apr 16, 1997 · N3893N · Bell 412SDR HAIHEEA9372Indicator · sticksNEEDLE INTERMITTENTLY STICKS AT ZERO.Apr 16, 1997 · N5019G · Bell 206L1SDR SCNA97087Speed Sensor · failedN1 INDICATOR FAILED AND ENGINE FAIL LIGHT ILLUMINATED WHILE ADDING TAKEOFF POWER. REMOVED AND REPLACED NUMBER 1 ENGINE FAN SPEED SENSOR AND TESTED IN ACCORDANCE WITH MM 77-11-01. NO FURTHER DISCREPANCIES NOTED.Apr 13, 1997 · N152SY · Doug DC1015SDR MVH0064153Sensor · malfunctionedOVERSPEED FAIL LIGHT ILLUMINATES INTERMITTENTLY.Apr 8, 1997 · N63CF · Aerosp SA365NSDR 97UAL900271Magnetic Rotor · looseDURING RIGHT ENGINE START, STARTER SWITCH DID NOT RETURN TO AUTO POSITION. AIRCRAFT RETURNED TO BLOCK. *S/D* THE SELF LOCKING NUT RETAINING THE MAGNETIC ROTOR FOR THE N2 INDICATING SYSTEM BACKED OFF OF THE THREADED DRIVE SHAFT. SIGNAL WAS LOST DUE TO DISENApr 8, 1997 · N610UA · Boeing 767222SDR RAIA970402Rpm Indicator · failedSTL - FLT 7438 - RIGHT ENGINE RPM ERRATIC. MAINTENANCE REPLACED RIGHT ENGINE RPM INDICATOR. (M)Apr 1, 1997 · N338TE · Bag JETSTM3201SDR HAIHEEA9299Tach Generator · wornSPLINE ON ADAPTER WORN AND CLIP BROKEN. SENT TO GLOBE MOTORS, INC. FOR INSPECTION AND REPAIR.Apr 1, 1997 · N2770Y · Bell 206L1SDR HAIHEEA9290Indicator · sticksALL NEEDLES HAVE STICKY OPERATION THROUGHOUT SCALE. TIME SINCE REPAIR 0:00.Apr 1, 1997 · N81832 · Bolkms BO105SSDR SWIA97878Nh Sensor · failedLEFT ENGINE LOST 40 PERCENT TORQUE AND ALL OTHER INDICATION DROPPED. RETURNED TO FIELD, MEL 73-21-1. REPLACED LEFT ENGINE NH SENSOR. PERFORMED GROUND RUN AND OPS CHECKS GOOD.Mar 31, 1997 · N293SW · Emb EMB120ER
Back to JASC 7714