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 HAIHEEA9255Tach Generator · shaft shearedSHAFT SHEARED. INSPECTED BY ACCESSORY OVERHAUL AND FOUND NO PROBLEM WITH TACH. GEN THAT WOULD HAVE CAUSED SHAFT TO SHEAR.Mar 31, 1997 · N3893S · Bell 412SDR VTZA97196Rpm Gauge · failedJFK/BOS - FLT 6462 - DURING TAKEOFF AT 1220 HOURS ON 3-27-97, ABORTED TAKEOFF DUE TO LT ENGINE RPM DROPPED TO ZERO PERCENT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSP AND REMOVED AND REPLACED RPM INDICATOR, OPS CHECK OK. AIRCRAFT WMar 27, 1997 · N473UE · Bag JETSTM3101SDR REXA97076Rpm Gauge · gauge stuckRT RPM STUCK AT 60 PERCENT. REPLACED RT RPM GAUGE. (M)Mar 26, 1997 · N332PX · Bag JETSTM3101SDR USAASB97087N1 Speed Sensor · failedPIT - FL 1052 - DURING CLIMB-OUT FROM PIT, THE NR 2 ENGINE N1 FLUCTUATED3-5 PERCENT. FLIGHT RETURNED TO FIELD AT PIT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE N1 FAN SPEED SENSOR. RAN ENGINE AT TAKEOFF POWER. ALLMar 21, 1997 · N336US · Boeing 737301SDR REXA97066Gauge · inoperativeRETURN TO RAMP WITH LEFT RPM INOP. REMOVED AND REPLACED GAUGE. (M)Mar 21, 1997 · N332PX · Bag JETSTM3101SDR VTZA97185Tach Generator · failedIAD/GSO - FLT 6348 - DURING CRUISE AT 0945 HOURS ON 3-18-97, MADE A SCHEDULED LANDING AT IAD WITH ONE DISCREPANCY WHICH WAS LT ENGINE RPM INDICATION FAILED. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED TACH GMar 18, 1997 · N492UE · Bag JETSTM3201SDR 97ZZZX3607Control Box · malfunctionROUGH RUNNING, N2 CONTROL.Mar 14, 1997 · N317MC · Bolkms BK117C1SDR CA970421043Tach Generator · sheared(CAN) N1 TACH GENERATOR SHAFT SHEARED.Mar 11, 1997 · Bell 206BSDR 97ZZZX1635Tachometer · defectiveTACHOMETER NEEDLE MOVEMENT HESITATES WITH CHANGES IN THROTTLE MOVEMENT. THIRD TACHOMETER OF SAME MAKE AND MODEL INSTALLED IN SAME AIRCRAFT.Mar 11, 1997 · N68792 · Cessna 152SDR RAIA970302Rpm Indicator · failedCMI - FLT 7439 - LEFT ENGINE RPM FLUCTUATES 98.5 - 99.5 PERCENT. MAINTENANCE REPLACED LEFT RPM INDICATOR. (M)Mar 5, 1997 · N433AM · Bag JETSTM3201SDR 9704669923Tach Generator · erraticAS TAKEOFF POWER WAS APPLIED, THE RIGHT ENGINE N1 INDICATION WOULD NOT INCREASE ABOVE 80 PERCENT. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE N1 TACH GENERATOR AND N1 INDICATOR FOR THE RIGHT ENGINE. ENGINE WAS RUN TO TAKEOFF POWEMar 4, 1997 · N927RC · Doug DC932SDR HEEA979149Indicator · reads lowENGINE N1 INDICATOR READS LOW.Feb 25, 1997 · N60951 · Snias AS350B2SDR CA970219001Tachometer · stuck(CAN) ENGINE STARTED NORMAL CONDITIONS. TACHOMETER NEEDLE STUCK AT 800 RPM. WOULD NOT RISE OR FALL.Feb 12, 1997 · Cessna U206FSDR HEEA979066Indicator · failedINDICATOR NEEDLE WILL NOT GO PAST 4%. REPLACED WITH SERVICEABLE GAUGE.Feb 11, 1997 · N2276B · Bell 206BSDR 97ZZZX2435Pickup Assy · defectiveN2 INDICATOR FLUCTUATES. PROBLEM FOLLOWS PICKUP WHEN SWAPPED FROM SIDE TO SIDE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Feb 6, 1997 · N30SV · Bell 222SDR 97ZZZX1824Tach Generator · ear brokenTACHOMETER GENERATOR AREA WAS OILY. TACHOMETER WAS REMOVED FOR INSPECTION. FOUND ONE OF THE EARS OF THE GENERATOR SHAFT FORK BROKEN OFF. NO OPINION AS TO CAUSE.Jan 25, 1997 · N2FOR · Cessna 402CSDR HEEA978931Indicator · reads lowTACH INDICATOR READS 5% LOW.Jan 23, 1997 · N6095S · Snias AS350B2SDR HEEA978865Indicator · fluctuatesINDICATOR FLUCTUATION DURING START AND OCCASIONALLY DURING FLIGHT.Jan 14, 1997 · N3897N · Bell 214STSDR HEEA978844Transmitter · failedENG TACH TRANSMITTER INOPERATIVE.Jan 10, 1997 · N6097Z · Snias AS350B2SDR VTZA97079Tach Generator · failedFLT 6348 - IAD-GSO - DURING CRUISE, AIRCRAFT MADE AN SCHEDULED LANDING AT GSO WITH ONE DISCREPANCY WHICH WAS RIGHT ENGINE RPM INDICATOR FAILED TO ZERO. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED ADN REMOVED ADN REPLACED TACH GENERAJan 3, 1997 · N496UE · Bag JETSTM3201SDR VTZA96466Tach Gen · failedFLT 6319 - IAD-CLE - DURING CLIMB, MADE AN UNSCHEDULED LANDING DUE TO RIGHT RPM INDICATION DROPPED TO ZERO. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE REMOVED AND REPLACED TACH GEN, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SEDec 27, 1996 · N497UE · Bag JETSTM3201SDR 9626909853N1 Indicator · malfunctionedDURING TAKEOFF ROLL, THE RIGHT ENGINE N1 INDICATION WAS ABNORMALLY LOW. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE N1 INDICATORS FOR BOTH ENGINES, OPERATIONAL CHECK OK.Dec 23, 1996 · N762NC · Doug DC951SDR 97ZZZX2142Tach Generator · defectiveN2 NEEDLE BOUNCES AND IS SLOW TO RESPOND AT START-UP. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 22, 1996 · N105NC · Bolkms BO105CBSSDR HEEA968722Indicator · failed#2 NEEDLE HAS NO INDICATION. TIME SINC E REPAIR 90:10.Dec 13, 1996 · N7128R · Bell 412SDR HEEA968721Indicator · wire brokenTRIPLE TACH REAR CONNECTOR SEPARATED FROM CAN AND WIRE BROKEN. TIME SINCE REPAIR 0:00.Dec 13, 1996 · N7136J · Bolkms BO105SSDR SWIA95790N1 Contl Amp · failedRIGHT ENGINE N1 AND N/FF FLUCTUATING AT CRUISE N1 96-88 PERCENT, NORMAL OPERATION AFTER RT ENGINE SPEED SWITCH TURNED OFF PER A/C ORH MANUAL MEL 26-11-1. RIGHT ENGINE SPEED SWITCH. RETURNED TO FIELD. REPLACED RT ENGINE N1, CONTROL AMP IAW MM 73-21-03. OPSDec 8, 1996 · N411SW · Cndair CL6002B19SDR USAABB96058N3 Tach · failedBWI - FLT 1441 - EN ROUTE BWI-SXM, CREW NOTED THE RIGHT DUCT PRESSURE LOW, THE RIGHT ENGINE N3 INDICATION AT ZERO, AND THE RIGHT ENGINE OIL PRESSURE IN THE AMBER BAND. FLIGHT RETURNED TO BWI AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND AND SECURED Dec 1, 1996 · N618AU · Boeing 757225SDR HEEA968551Indicator · needle looseNEEDLE IS LOOSE ON SHAFT. THIS UNIT WAS REPAIRED ON 8-1-96.Nov 22, 1996 · N107X · Bell 412SDR 9625119908N1 Indication · lowAS POWER WAS APPLIED FOR TAKEOFF THE RIGHT ENGINE N1 INDICATION WAS LOW. CREW ABORTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE RAN BOTH ENGINES TO TAKEOFF SETTINGS AND ALL INDICTIONS WERE NORMAL.Nov 21, 1996 · N958N · Doug DC931SDR 9624641154N 1 Transmitter · failedDURING TAKEOFF ROLLOUT, THE NR 3 ENGINE N1 WOULD NOT REACH TAKEOFF POWER WITH ENGINE FAIL LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE NR 3 N1 TRANSMITTER.Nov 15, 1996 · N154US · Doug DC1040SDR VTZA97060Tach Generator · failedFLT 6372 - IAD-AIB - DURING CRUISE, MADE AN UNSCHEDULED LANDING DUE TO RIGHT RPM FAILED IN FLIGHT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE REMOVED AND REPLACED TACH GEN, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (Nov 12, 1996 · N497UE · Bag JETSTM3201SDR 96ZZZX6034Indicator · failedINDICATOR FAILED. REPLACED WITH NEW DUAL TACH IND.Nov 12, 1996 · N407NA · Bell 407SDR WTAA960184Tach Generator · failedIPL - LEFT ENGINE RPM INDICATION FAILED ON TAKEOFF. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. FERRIED AIRCRAFT TO LAX. MAINTENANCE REPLACED LEFT TACHOMETER GENERATOR. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)Nov 1, 1996 · N417UE · Bag JETSTM3101SDR HEEA968356Indicator · needle sticksTURBINE NEEDLE STICKS AT 33%.Oct 14, 1996 · N50182 · Bell 206L1SDR HEEA968355Indicator · defectiveINDICATOR FACE IS ROTATED 45 DEGREES FROM VERTICAL.Oct 14, 1996 · N2753F · Bell 206BSDR HEEA968297Indicator · reads highINDICATES HIGH OUT OF TOLERANCE AT 100%. STICKS ON START.Oct 14, 1996 · N911NC · Bolkms BK117A3SDR CA970311058Tach Generator · surging(CAN) ENGINE RPM INDICATOR SURGING 10-15 PERCENT. N1 TACH GENERATOR REMOVED, FOUND WIRE CHAFED (TO GROUND) UNDER ELECTRICAL CONNECTOR CAP.Oct 8, 1996 · Bell 206BSDR HEEA968078Indicator · failed#2 NEEDLE HAS NO INDICATION.Oct 3, 1996 · N27805 · Bell 212SDR HEEA968030Indicator · sticksNEEDLE STICKS ON LOW END.Oct 3, 1996 · N406EH · Bell 206L1SDR HEEA968027Indicator · intermittent#1 NEEDLE HAS INTERMITTENT OPERATION.Oct 3, 1996 · N1079U · Bell 212SDR HEEA968020Rpm Warn Box · malfunctionWARNING LIGHT ILLUMINATES AT 100% N2 AND 100% NR WITH N1'S MATCHED. DOES NOT ILLUMINATE WITH 12% N1 SPLIT.Oct 3, 1996 · N5421E · Bolkms BO105SSDR HEEA967999Indicator · reads lowINDICATOR INTERMITTENTLY READS LOW.Oct 2, 1996 · N350BZ · Snias AS350B2SDR RAIA960940Tach Generator · failedSTL - FLT 7071 - RIGHT RPM INDICATOR DROPPED TO ZERO. MAINTENANCE REPLACED THE RIGHT TACH GENERATOR. (M)Sep 30, 1996 · N341TE · Bag JETSTM3201SDR MALA965138Rpm Indicator · failedFLT 3395 - AFTER TAKEOFF FROM DTW, THE RIGHT ENGINE RPM DROPPED TO 97 PERCENT. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE RIGHT RPM INDICATOR. ALL CHECKS SATISFACTORY. (M)Sep 18, 1996 · N442MA · Swrngn SA227ACSDR HEEA967803Indicator · defective#2 NEEDLE WILL NOT GO TO ZERO AND #1 NEEDLE INDICATES LOW.TIME SINCE REPAIR 108:20.Sep 9, 1996 · N3893P · Bell 412SDR BDHA9600023Tach/Generator · failedRAP - FLT 434 - THE RIGHT ENGINE RPM WAS ERRATIC IN FLIGHT. THE PROBLEM COULD NOT BE DUPLICATED ON THE GROUND. THE TACH GENERATOR WAS REMOVED FOR INSPECTION AND THE SHAFT WAS LOOSE FROM A WORN ROLE PIN THE BACK. THE TACH GENERATOR WAS REPLACED AND ENGINE RUSep 9, 1996 · N328BA · Swrngn SA226TCSDR HEEA967746Indicicator · sticksSTICKS FROM 0% TO 30% INTERMITTENTLY. TIME SINCE REPAIR 17:05.Sep 3, 1996 · N5421E · Bolkms BO105SSDR S2YA960029Tach Indicator · inoperativeDURING THE MONTH OF SEPTEMBER THERE WERE THREE TURBINE TACH INDICATORS, P/N 114-380036-5, THAT HAD PART OF THEIR LIGHTED DIGITAL READOUT BURN OUT, THE ANALOG PORTION OF THE INDICATOR REMAINED OPERATIVE. THE PARTS' TOTAL TIMES WERE 6105 HOURS FROM A/C N NR 801Sep 1, 1996 · Beech 1900DSDR 96ZZZX5764Tach Generator · failedTACH GEN DRIVE SHAFT DISENGAGED FROM INTERNAL DRIVE PIN.Sep 1, 1996 · N495LF · Bolkms BO105SSDR 96ZZZX5762Triple Tach · needle sticksNR 2 ENGINE NEEDLE STICKS - SUBMITTER STATES UNIT WAS REPAIRED FOR SAME DISCREPANCY LAST REPAIR.Aug 25, 1996 · N4493X · Bolkms BK117A3
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