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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR RAIA960223Tach Generator · failedSTL - FLT NR 7031 - RIGHT RPM INDICATOR FAILED IN FLIGHT. MAINTENANCE REPLACED RIGHT TACH GENERATOR PERFORMED GROUND RUNS OPERATIONAL CHECK GOOD. (M)SDR 96ZZZX1628N1 Monopole · failedAPPROXIMATELY 45 MINUTES INTO THE FLIGHT, CLIMBING OUT OF FL 387, A SUDDEN YAW WAS FELT, THE RIGHT ENGINE POWER HAD DECREASED, AND THE RT 'FUEL COMP MANUAL' LIGHT WAS ILLUMINATED. THE FUEL COMPUTER WAS CYCLED BACK PER CHECKLIST, BUT WOULD NOT REMAIN ON LINE SDR HEEA966664Indicator · defective#1 AND #2 NEEDLES HAVE A 10% TORQUE SPLIT.SDR HEEA966600Indicator · defectiveTURBINE NEEDLE HAS NO INDICATION. TIME SINCE REPAIR 10:55.SDR HEEA966573Indicator · stickingTACH DOES NOT READ RIGHT. ALL NEEDLES STICK EXCESSIVELY. TIME SINCE REPAIR 742:35.SDR DLL10960250N2 Indicator · intermittentDURING TAKEOFF, EPR AT 1.522 THE N2 GAUGE WAS PEGGED OUT HIGH ABOVE 120 PERCENT ON NR 1 ENGINE FOR 4 SECONDS. REPLACED NR 1 ENG N2 INDICATOR AS PRECAUTIONARY. SWAPPED N2 PROBE TO ALTERNATE PICK UPS. RAN ENGINE TO TAKEOFF POWER, CKS OK.SDR HEEA966529Indicator · sticksTRIPLE TACH NEEDLE STICKS AND EXCESSIVE NEEDLE SPLIT.SDR 96ZZZX1373Tach Generator · improper partTHE LT ENGINE N1 TACHOMETER GENERATOR DID NOT RESEMBLE THE OTHER TACHOMETER GENERATORS. INVESTIGATION FOUND VENDOR-ADVANCE POWER, INC., IS NOT AN APPROVED CESSNA/CITATION VENDOR FOR THIS PART. ENGINE LOG BOOK SHOWS A CITATION PART NUMBER WHEN THIS UNIT WAS ISDR CA960312014Tachometer · sticking(CAN)GAUGE STICKS AT LOW TEMPERATURE (-25 TO -40 DEGREES). GAUGE WORKS NORMALLY IF HEAT APPLIED TO GAUGE.SDR COMA9660019Amplifier · defectiveRT ENGINE WILL NOT ACHIEVE TAKEOFF THRUST. REPLACED THE N1 AMPLIFIER AND ENGINE RUNS NORMAL, ACFT RETURNED TO SERVICE.SDR HEEA966474Indicator · needle split#1 AND #2 NEEDLES HAVE A 3% SPLIT. SENT TO AIR DALLAS INSTRUMENTS FOR WARRANTY REPAIR. TIME SINCE REPAIR 17:00.SDR 96ZZZX1783Tachometer · sticksINSTALLED NEW MITCHELL TACHOMETER IN AIRCRAFT. NEXT MORNING, TACHOMETER WAS STICKING UNTIL A SHORT WARM-UP. THREE FLIGHTS LATER, STRIKING RECURRED. AT 21.1 TACHOMETER HOURS, STICKING OCCURRED AGAIN ALONG WITH ERRATIC READINGS. REPLACED MITCHELL TACHOMETER SDR HEEA966408Indicator · inoperativeNR1 ENGINE NEEDLE WILL NOT GO TO ZERO; INOPERATIVE.SDR HEEA966400Indicator · inoperativeENGINE N1 INDICATOR INOPERATIVE.SDR HEEA966397Indicator N1 · inoperativeN1 INDICATOR INOPERATIVE. NO GAUGE INDICATION ON ENGINE START.SDR CA960212021Tachometer · seized(CAN)AFTER START UP THE PILOT OBSERVED NO INDICATION FROM THE TACHOMETER AND THE ENGINE WAS SHUTDOWN. INVESTIGATION REVEALED THAT THE TACH HEAD HAD SEIZED. A NEW MECHANISM WAS INSTALLED AND THE AIRCRAFT WA S RETURNED TO SERVICE. SUBMITTER NOTES THAT THIS IS THSDR 97ZZZX517Tachometer · defectiveWHEN THE AIRCRAFT TACHOMETER INDICATES 2,300 RPM, THE EXTERNAL CALIBRATED TACHOMETER SHOWED THE ACTUAL ENGINE RPM AT 2,460 RPM. THIS MAY HAVE BEEN A LONG TERM PROBLEM AS THE ENGINE HAS BEEN TOP OVERHAULED TWICE IN 1546 HRS.SDR 97ZZZX516Tachometer · defectiveWHEN THE AIRCRAFT TACHOMETER INDICATES 2,300 RPM, THE EXTERNAL CALIBRATED TACHOMETER SHOWED THE ACTUAL ENGINE RPM AT 2,440 RPM. THIS MAY HAVE BEEN A LONG TIME PROBLEM AS THE ENGINE HAS BEEN TOP OVERHAULED AT LEAST TWICE IN 1546 HRS.SDR HEEA966343Indicator · defectiveALL NEEDLES HAVE EXCESSIVE NEEDLE SPLIT. #1 AND ROTOR NEEDLES STICK.SDR 96ZZZX1018Indicator · fluctuateNR 2 ENGINE N.G. FLUCTUATING. REPLACED NG INDICATOR, SYSTEM CHECKED OK.SDR HEEA956300Indicator · inoperativeNEEDLE DOESN'T MOVE.SDR HEEA956260Indicator · errorINTERMITTENTLY DOES NOT INDICATE AND HAS EXCESSIVE FRICTION ERROR.SDR HEEA956217Indicator · fluctuatesTRIPLE TACH FLUCTUATES ON HIGH END. WILL NOT REACH 100%.SDR CA960212022Tachometer · seized(CAN)AFTER START UP THE PILOT OBSERVED NO TACH INDICATION AND THE ENGINE WAS SHUTDOWN. INVESTIGATION FOUND THE TACH HEAD WAS SEIZED INTERNALLY. A NEW MECHANISM WAS INSTALLED.SDR HEEA956214Indicator · defectiveRATTLE INSIDE OF TRIPLE TACH INDICATOR.SDR HEEA956207Indicator · err0rDUAL TACH INDICATES 2% SPLIT.SDR 96ZZZX451Tach Generator · inoperativeINSTALLED TACHOMETER GENERATOR AS SERVICEABLE, BUT DID NOT WORK. RETURN FOR REPAIR.SDR 95ZZZX6915Tachometer · errorsNEW TACHOMETER RECEIVED FROM WAG AERO, INC. NO MAKE, MODEL, OR S/N ON HOUSING. CERTIFICATE WHICH ACCOMPANIED TACHOMETER SUPPLIED, MODEL AND S/N TO TSO NUMBER. TACHOMETER WOULD NOT INDICATE PROPER RPM (500-600 RPM ERROR).SDR QXEA9500388Connector · corrosionPSC - NR 1 ENGINE ECU MANUAL LIGHT ILLUMINATED ON TAKEOFF ROLL, CONTINUED TAKEOFF. ENGINE AUTO FEATHERED ON CLIMB, BUT CONTINUED TO RUN. FLIGHT CREW PERFORMED AN IN-FLIGHT SHUTDOWN AND RETURNED TO FIELD. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. ECU WAS NOSDR 96ZZZX65Tachometer · shortedAT 1,500 MSL, BOTH IGNITION SOURCES FAILED TO PRODUCE HIGH VOLTAGE TO THE SPARK PLUGS RESULTING IN THE REDUCTION OF ENGINE POWER AND THE ENGINE STOPPED ROTATION. THE AIRCRAFT CRASHED IN AN OPEN FIELD WITH MINOR DAMAGE. BOTH COILS' NEGATIVE TERMINALS EXHIBIT SDR USAASB95010Contl Alternator · leakingPIT - FLT 0223 - EN ROUTE IND TO BWI, NR 2 ENGINE OIL QUANTITY FELL TO ZERO AND OIL PRESSURE DROPPED TO RED LINE. FLIGHT CREW SHUT DOWN NR 2 ENGINE AND DIVERTED TO PIT. LANDING WAS WITHOUT INCIDENT. MAINTENANCE REPLACED RT ENGINE N2 ALTERNATOR AND ROTOR DUESDR CA951218007Tach Box · loose parts(CAN)TIME SINCE OVERHAUL, 0.7 HOURS. BLEED VALVE FUNCTIONED CORRECTLY ON TEST FLIGHT BUT PART WAY THROUGH NEXT FLIGHT, BLEED VALVE WOULD NO LONGER CLOSE. TACH BOX REMOVED, LOOSE PARTS FOUND INSIDE. ASSEMBLY REPLACED. AIRCRAFT RETURNED TO SERVICE.SDR CA951116014Tachometer · erratic(CAN)PILOT REPORTED THAT N1 TACHOMETER INDICATOR FLUCTUATES ERRATICALLY, APPROXIMATELY 1 OR 2 PERCENT IN CRUISE. TACHOMETER REMOVED FROM THE ENGINE. INSPECTION REVEALED THE DRIVE SHAFT WAS STIFF TO TURN AN D GRINDING COULD BE HEARD FROM INSIDE THE UNIT. TACHOMSDR 95ZZZX6947Indicator · erraticN1 TACHOMETER HAS ERRATIC NEEDLE ON START.SDR 95ZZZX6969Indicator · defectiveTRIPLE TACHOMETER NEEDLES SPLIT. NR 2 ENGINE NEEDLE FLUTTERS IN FLIGHT. REMOVED AND REPLACED.SDR VTZA96010Tach Generator · failedIAD/RON - FLT 6459 - DURING CLIMB-OUT AT 1510 HRS ON 10-19-95, RETURNED TO IAD DUE TO THE RT ENGINE RPM FLUCTUATION. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE TACH GENERATOR. ALL OPS CHECKS GOOD. AIRCRAFT WAS RELEASED AND ASDR 96ZZZX520Pickup Assy · inoperativePICKUP ASSY UNIT INOPERATIVE UPON INSTALLATION. REPLACED WITH NEW UNIT FROM ALLISON, CORRECTED PROBLEM.SDR 95ZZZX6187Harness · pin corrosionPILOT REPORTED N1 SPEED FLUCTUATIONS AND ENGINE LOW LIGHT ILLUMINATED. REMOVED FORWARD ELECTRICAL HARNESS AND CLEANED CORROSION OFF PINS AND CONNECTOR. GROUND RUN AND FLEW AIRCRAFT, COULD NOT DUPLICATE REPORTED MALFUNCTION.SDR 95ZZZX7053Generator · erraticTACHOMETER GENERATOR ERRATIC. REPLACED WITH NEW GENERATOR.SDR 95ZZZX6514Indicator · erraticN1 TACHOMETER HAS ERRATIC INDICATION. JUMPS FROM 2 PERCENT TO 15 PERCENT WHILE STARTING.SDR 95ZZZX6493Indicator · fluctuatesNR 1 N2 NEEDLE FLUCTUATES WHILE ENGINE IS AT 100 PERCENT. NEEDLE FLUCTUATES FROM 70 PERCENT - 25 PERCENT INTERMITTENTLY. LAST REPAIR WAS ALSO FLUCTUATES, STILL DOING THE SAME THING.SDR WTAA950278Nh/N1 Ind · malfunctionedSFO - TAKEOFF ABORTED WITHOUT INCIDENT. NR 1 NH ANALOG AND DIGITAL INDICATION DISAGREEMENT REPORTED. MAINTENANCE REPLACED NR 1 NH/N1 INDICATOR. ALL INDICATIONS NORMAL DURING ENGINE GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)SDR 95ZZZX6581Tachometer Box · failedBLEED VALVE WOULD NOT STAY CLOSED ON ENGINE. BLEED VALVE IS CONTROLLED BY AN ELECTRO-PNEUMATIC SIGNAL. TACHOMETER BOX CONTROLS THE ELECTRICAL SIGNAL AND, IN THIS CASE, TACHOMETER BOX FAILED INTERNALLY. ACFT TT, 7,372.2 HOURS.SDR 95ZZZX6580Tachometer Box · failedBLEED VALVE WOULD NOT CLOSE DUE TO FAILURE OF TACHOMETER BOX. THIS AIRCRAFT AND OTHERS HAVE EXPERIENCED AN INCREASE IN TACHOMETER BOX FAILURES RECENTLY. ACFT TT, 7,404.1 HOURS.SDR SIMA952651Probe · brokenORD - FLT NR 4043 - NR 1 ENGINE TQ SURGED FROM APPROXIMATELY 40-110 PERCENT, SURGE STOPPED WHEN NP WAS SET TO 100 PERCENT. REPLACED NR 1 ENGINE NH SENSOR, IAW PWA MM, CHECK GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M0SDR HEEA955769Indicator · failed#2 NEEDLE WILL NOT INDICATE. SENT TO FIVE STAR TECHNOLOGY, INC. FOR INSPECTION AND REPAIR.SDR HEEA955755Indicator · defectiveNEEDLES SPLIT, #1 AND #2 NEEDLES.SDR MALA954628Rpm Ind · failedFLT NR 3241 - AFTER TAKEOFF FROM MSP, THE LEFT ENGINE RPM INDICATION ROSE TO 103 PERCENT. THE AIRCRAFT RETURNED TO MSP WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPLACED THE LT RPM INDICATOR GAUGE. (M)SDR HEEA955654Indicator · defective#1 NEEDLE LAGS BY APPROXIMATELY 3%.SDR 96ZZZX991Indicator · defectiveRPM INDICATOR STICKING AT 65 PERCENT. WITH TAP ON GAUGE, NEEDLE CAME DOWN TO 61.5 PERCENT, NR 1.
Back to JASC 7714