JASC 7922

Service difficulty reports · 268

Reports filed under 7922 · Engine Oil Temperature Regulator, newest first.

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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 = '7922'
  ORDER BY difficulty_date DESC"

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SDR DALA2026011400341Oil Cooler · leakingATB/FUMES - RETURNED TO MSP DUE TO FUMES IN THE FLIGHT DECK AND CABIN. PERFORMED HIGH POWER ENGINE RUNS WITH NO ODORS FOUND. P-TRACK DATA INDICATED APU AS LIKELY SOURCE OF ODOR. APU INSPECTION IN WORK. FOUND #2 ENGINE AIR/OIL COOLER CRACKED. SAME REPLACED. (Jan 12, 2026 · N107DU · Airbus BD5001A10SDR HALA20250516137Monitor · faultedETOPS - ENG 2 MINOR FAULT. REMOVED AND REPLACED #2 EMCD DUE TO FAULT W/REF TO AMM 79-22-26. BITE TEST GOOD. OK FOR SVC. NO DEBRIS FOUND ON REMOVED EMCDMay 14, 2025 · N390HA · Airbus A330243SDR QMLA2024111820144Bypass Valve · unserviceableENGINE #1 OIL TEMP CLIMBED PAST LIMIT INFLIGHT, BROUGHT BACK TO IDLE AND RETURNED TO BASE.Nov 17, 2024 · N138HN · Urocop EC135P2SDR 3EJA20230307001Fuel/Oil Cooler · abnormalABORTED TAKE-OFF DUE TO LOW FUEL PRESSURE MASTER CAUTION AND FUEL BOOST PUMP ILLUMINATED AFTER SETTING TAKE-OFF THRUSTFeb 22, 2023 · Cessna 525BSDR LR7A2023010203258Vernatherm · inoperativeDURING SCHEDULED FLIGHT #3 ENGINE SHUTDOWN FOR OIL TEMP OUT OF LIMITS INDICATING 100 DEGREES, OAT -26, OIL COOLER FLAP FULL OPEN. REPLACED OIL COOLER THERMOSTATICALLY CONTROLLED BYPASS VALVE IAW SMP581 79-20.Jan 2, 2023 · N402LC · Lkheed 382G44K30SDR HALA2021031500033Heat Exchanger · leakingON SERVICE CHECK WALKAROUND, FOUND NR 2 ENGINE AIR-OIL HEAT EXCHANGER LEAKING OIL. REMOVED AIR OIL HEAT EXCHANGER IAW AMM 79-21-51 480250. REPLACED THE AIR OIL HEAT EXCHANGER IAW AMM 79-21-51. NO LEAKS NOTED. OK FOR SERVICE,Mar 14, 2021 · N378HA · Airbus A330243SDR HDNA2020090300393Bypass Valve · defectiveTHE NR 2 ENGINE OIL TEMPERATURE EXCEEDED THE MAX CONTINUOUS OPERATING RANGE THRESHOLD, WHICH RESULTED IN THE ENGINE BEING PLACED IN THE IDLE DETENT AND THE PILOT PERFORMING A RUN ON LANDING AT HIS INTENDED AIRPORT. THIS DISCREPANCY WAS TROUBLESHOT TO A DEFECTSep 3, 2020 · N135LL · Urocop EC135P2SDR QXEA2020080600232Bypass Valve · malfunctionedON CLIMB, NR 1 ENG OIL TEMP WAS AT 108 FOR AT LEAST 3 MINUTES. RAN HIGH OIL TEMP CHECKLIST AND REDUCED POWER BY 30%. 2 MINUTES AFTER POWER REDUCTION, OIL TEMP DROPPED TO 107 AND CONTINUED TO DROP ON OUR DESCENT BACK TO DEPARTURE. RETURNED TO FIELD. LANDINGAug 5, 2020 · N412QX · Bombdr DHC8402SDR HDNA202005260015Bypass Valve · defectiveTHE NR 1 ENGINE OIL TEMPERATURE APPROACHED 120 DEGREES CELSIUS WHICH IS THE MAX CONTINUOUS OPERATING TEMPERATURE. THIS WAS TROUBLESHOT TO A DEFECTIVE NR 1 ENGINE OIL BYPASS VALVE.May 26, 2020 · N135BU · Urocop EC135P1SDR CALA2019120302136Heat Exchanger · inoperativeHIGH OIL PRES REPORTED IN ERROR ACTUAL EVENT WAS HIGH OIL TEMP LEFT SEE LP 3920615 FOR WORK PERFORMED. FUEL/OIL COOLER REPLACED, ALL OPS OKDec 2, 2019 · N771UA · Boeing 777222SDR CALA2019120302129Heat Exchanger · inoperative2471-1 ESN 777036. DUE TO REPORTS OF HIGH OIL TEMP AND PPE REVIEW OF QAR DATA PPE REQUESTS MINIMUM WORK TO BE ACCOMPLISHED IS REPLACEMENT OF THE FUEL COOLED OIL COOLER (FCOC) PRIOR TO FLIGHT. M&E 27-7921-9-0002 PER AMM 79-21-01 R+R # 1 ENG FUEL OIL HEAT EXCHANNov 27, 2019 · N771UA · Boeing 777222SDR S6GA2019FA0000141Regulator Valve · failedREPORTED BY PILOT: ON FINAL FOR THE RNAV 23 INTO KRZN, I GOT A NR 2 ENG OIL HOT LIGHT. INITIAL COMPARISON OF THE ACTUAL OIL TEMP SHOWED 123, AND STILL IN THE GREEN. THAT LASTED FOR ABOUT 5 SECONDS WHEN THE TEMP STARTED TO CLIMB RAPIDLY TO 127 BEFORE I COULD PLMay 6, 2019 · N68NM · Agusta A109SSDR TIMA2018120400001Vernatherm · failedPILOT SHUTDOWN RT ENGINE AFTER NOTICING OIL TEMP HIGH, PRESSURE LOW, AND OIL STREAKS ON COWL. INVESTIGATION FOUND OIL TEMPERATURE VERNATHERM WAS NOT PASSING OIL THRU THE OIL COOLER.Dec 3, 2018 · N218SL · Beech 1900CSDR QMLA2018071618081Bypass Valve · defectiveROUGHLY 5 MINUTES AFTER DEPARTURE, PILOT OBSERVED A ENG HOT OIL WARNING LIGHT ILLUMINATION. HE CHECKED THE OIL TEMP GAUGE AND CONFIRMED AN ENGINE OIL TEMP EXCEEDANCE. HE ANNOUNCED THE WARNING LIGHT AND REDUCED POWER AND AIRSPEED. HE PERFORMED A PRE-LANDING GAUJul 14, 2018 · N353LL · Agusta A119SDR P5CA2018020800040Gasket · leakingLEFT ENGINE FUEL/OIL HEAT EXCHANGER FOUND LEAKING. THE HEAT EXCHANGER GASKET WAS REPLACED IAW AMM 79-21-01. ENGINE IDLE TEST. FOUND NORMAL IAW AMM 71-00-00.Feb 8, 2018 · N647GT · Boeing 767306SDR O2GA2017101980601Bypass Valve · intermittentLEFT ENGINE HAD HIGH OIL TEMPERATURE DURING CRUISE. 97C AND CLIMBING. DESCENDED TO FL250, TEMPERATURE DECREASED FOR A FEW MINUTES AND BEGAN CLIMBING AGAIN. EMERGENCY DECLARED AND DIVERTED. LANDING WAS UNEVENTFUL. MAINTENANCE REPLACED THE LEFT ENGINE OIL COOct 13, 2017 · N806UP · Beech B300SDR QMLA2017072317070Blower · failedAFTER TAKE OFF DURING CLIMB OUT, THE NR 2 ENGINE OIL TEMP. ROSE TO 120 DEGREES. AND A HIGH OIL TEMP CAUTION LIGHT ILLUMINATED. PILOT STARTED DESCENT AND AFTER LANDING SHUT ENGINE DOWN AND TAXIED TO PARKING LOCATION WITH NO FURTHER DIFFICULTY.Jul 23, 2017 · N127AM · Agusta A109ESDR P5CA2017011200016Gasket · leakingFOUND THE NR 1 ENGINE FUEL / OIL HEAT EXCHANGER GASKET FUEL SEEPING. REPLACED THE NR 1 ENGINE FUEL / OIL HEAT EXCHANGER GASKET IAW AMM 79-21-01-024-065 REV 120 & AMM 79-21-01-424-066 REV 120. PERFORM IDLE LEAK CHECK, NO LEAKS FOUND IAW AMM 71-00-00-795-03Jan 12, 2017 · N643GT · Boeing 7673JHFSDR ZH9R201605130001Thermal Bypass · looseLOOSE CRIMP NUT FOUND AS DESCRIBED IN MFG MANDATORY SB NR 518C. IAW SB 518C, THE THERMOSTATIC BYPASS VALVE FOUND FAULTY IS NOT ONE OF THE AFFECTED MODELS LISTED. WE RECOMMEND THAT 518C SHOULD BE UPDATED TO INCLUDE ANY BYPASS VALVE USING THE CRIMPED NUT.Apr 26, 2016 · N514E · Piper PA31350SDR 2016FA0000149Vernatherm · fracturedAFTER 162.0 HOURS OF OPERATION SMOH THE RIGHT ENGINE OIL TEMPERATURE WAS REPORTED TO STILL BE 20 TO 30 DEGREES HIGHER THAN LEFT ENGINE AND IN WARMER AIR TEMPERATURES THE COWL FLAP NEEDED TO BE OPENED TO KEEP IN THE GREEN. DURING TROUBLESHOOTING IT WAS DISCOVERMar 30, 2016 · N62912 · Piper PA31350SDR CA150914009Bypass Valve · cracked(CAN) PILOT REPORTED HIGHER THAN NORMAL ENGINE OIL TEMPERATURE. BYPASS VALVE REMOVED FOR INSPECTION AND FOUND TO BE CRACKED.Aug 31, 2015 · Bell 429SDR OZCA20150831018Relief Valve · faultyABOUT 10 MINUTES AFTER TAKEOFF, RT ENG OIL TEMP WENT ABOVE RED LINE. REDUCED POWER & FOLLOWED QRH. TEMP SLOWLY STARTED TO REDUCE, OIL PRESS WAS 48 PSI. TROUBLE SHOT SYS & FOUND COLD OIL RELIEF VLV INOPERATIVE. R & R RT COLD OIL RELIEF VLV. GND OPERATIONALAug 31, 2015 · N651BC · Saab SF340ASDR FDEA201412284194Sensor · failedLEVEL 2 OIL TEMP HIGH. OIL TEMP 203 ABOVE RED LINE. NR 2 ENGINE SHUTDOWN. SPIKING AFTER SHUTDOWN AT GATE. TROUBLESHOT IAW FIM 79-32-00/201. REMOVED AND REPLACED THE NR 2 ENGINE OIL TEMP SENSOR IAW MM 79-32-01-2. OPS AND LEAK CHECKED GOOD. OK FOR SERVICE.Dec 28, 2014 · N303FE · Doug MD1030FSDR HEER20141211553Bypass Valve · inoperativeWHILE FLYING BETWEEN EW921 AND SS246, SAW THE NR 1 ENGINE TEMPERATURE IN THE RED. REDUCED POWER TO OEI LEVELS AND LOOKED FOR SECONDARY INDICATIONS AND SAW NONE. CONSULTED CHECKLIST AND PERFORMED A SINGLE ENGINE SHUTDOWN. CONTACTED COM CENTER AND WAS ADVISEDDec 11, 2014 · N344PH · Urocop EC135P2SDR ASOA2014031910158Sensor · failedAT LT ENG OIL TEMP STARTED TO CLIMB RAPIDLY TO 249C. NEVER RECEIVED MASTER WARNING OR CAUTION, ONLY RED TEMPERATURE ON EICAS, FOLLOWED QRH & SHUTDOWN LT ENGINE, ENROUTE, ACFT DIVERTED DUE TO MAINTENANCE EMERGENCY ACTIONS. R & R OIL LEVEL/TEMP SENSOR IAW AMM Mar 14, 2014 · N608QX · Cndair CL6002C10SDR SWIA201231928Thermostat · failedLEFT ENGINE OIL WENT FROM 80° AT RUNWAY ENTRY TO 100° BY 1000° AGL TO THE RED (PEGGED) BY 1500° . (FLT 551 1)REPLACED LEFT OIL COOLER THERMOSTAT IN REFERENCE TO CMM.Oct 6, 2012 · N579SW · Emb EMB120ERSDR M36R20111026004Vernatherm · detachedWHILE IN CRUISE THE PILOT REPORTED ENGINE OIL INDICATORS SHOWING OIL PRESSURE LOWER AND TEMPERATURE HIGHER THAN NORMAL. LATER UPON REMOVAL AND INSPECTION OF THE ENGINE OIL COOLER VERNATHERM IT WAS NOTED THAT IT HAD STARTED TO COME APART DUE TO THE FAILURE OF Oct 26, 2011 · N1120W · Cessna 208BSDR MASA2011062003053Regulator Valve · malfunctionedNR 2 ENGINE OIL TEMP 110 FOR WHOLE FLIGHT. R2 TEMP REGULATING VALVE AT THE OIL COOLER.Jun 17, 2011 · N434YV · Dhav DHC8202SDR HNAA2010042000091Regulator Valve · faultyON CLIMBOUT NR 2 ENGINE OIL TEMP ROSE TO APPROX 115 DEGREES FOR APPROX 10 MINUTES, REDUCED NR 2 ENGINE POWER AND NR 2 ENGINE OIL TEMP STABILIZED AT APPROX 110 DEGREES C. REMOVED AND REPLACED NR 2 ENGINE OIL TEMP REGULATING VALVE, LEAK CHECKED GOOD AND RAN AIRApr 8, 2010 · N331EN · Dhav DHC8103SDR CA091027002Valve · failed(CAN) DURING A 150 HOUR INSPECTION THE LEFT OIL COOLER VALVE WAS REPLACED WITH AN OVERHAULED UNIT DUE TO A STATIC OIL LEAK, THE AIRCRAFT WAS RUN UP PRIOR TO RELEASE FOR LEAK CHECK. THE AIRCRAFT DEPARTED AND THE CREW OBSERVED AN INCREASE IN THE OIL TEMP, DISPATOct 26, 2009 · Curtis C46DAIRLIFTSDR CA090610001Actuator · failed(CAN) HIGH OIL TEMP WAS OBSERVED DURING FLIGHT AT 117 DEGREES ON THE NO. 2 ENGINE . FLIGHT CREW OPTED TO RETURN TO DEPARTURE AIRPORT. ON GROUND TROUBLESHOOTING REVEALED OIL COOLER DOOR WOULD NOT OPEN. MTCE REPLACE OIL COOLER DOOR ACTUATOR AND BYPASS VALVE FOR Jun 9, 2009 · Bombdr DHC8400SDR CA090218006Valve · failed(CAN) IN CRUISE, THE PILOT NOTICED THAT THE RT ENGINE OIL TEMP WAS CLIMBING TO THE RED LINE WITH A DECREASE IN OIL PRESSURE. THE PILOT DECIDED TO SHUT DOWN AND SECURE THE ENGINE ONCE THE OIL TEMP REACHED THE RED LINE. THE PILOT RETURNED TO BASE WITHOUT INCIDENFeb 18, 2009 · Piper PA31350SDR GVNA2009021180700Bulb · malfunctionedNR 1 ENG OIL TEMP WENT TO THE RED LINE AND THEN ERRATIC. PILOT SHUTDOWN ENGINE AND MADE A PRECAUTIONARY LANDING. REPLACED TEMP BULB WITH NEW, FUNCTION CHECK GOOD.Feb 11, 2009 · N453MH · Bolkms BK117C2SDR HNAA2009010300366Regulator · failedNR 1 ENGINE TEMPERATURE WENT TO MAX PERMISSIBLE LIMIT OF 125 DEGREES, IMMEDIATELY PULLED POWER BACK TO BRING TEMPERATURE TO 115 DEGREE WITH IN LIMITS. R&R THERMO VALVE ON NR 1 ENGINE OIL COOLER IAW 79-20-11, OPS CHECK GOOD.Dec 30, 2008 · N330EN · Dhav DHC8311SDR CA081023004Thermostat · unserviceable(CAN) THERMOSTAT STUCK AND ENGINE OIL TEMP 8 EXCEEDED RED LINE LIMIT.Oct 16, 2008 · Skrsky S76ASDR 2008FA0000382Regulator · damagedRECEIVED O/H OIL TEMP REGULATOR FROM MFG UNDER THEIR WO 815978-001, DATED 04/22/2008. WHILE PERFORMING INCOMING PARTS INSPECTION ON 04/24/2008, FOUND FUEL INLET PORT SMASHED. THERE WAS NO DAMAGE TO THE SHIPPING CONTAINER. PROBABLE CAUSE OF DAMAGE WAS MOST LApr 24, 2008 · N626CG · Braero BAE125800ASDR HALA0800533Heat Exchanger · leakingETOPS SIGNIFICANT SYSTEM, ON ARRIVAL AT GATE FOUND NR 2 ENGINE HEAT EXCHANGER AIR OIL LEAKING. REMOVED AND REPLACED AIR OIL HEAT EXCHANGER PER AMM 79-21-09-404-013-N00 AND AMM 71-00-00/501. OPS CHECK GOOD AND LEAK CHECK GOOD. Apr 19, 2008 · N587HA · Boeing 76733ASDR 2007F00049Bypass Valve · malfunctionedON A FLIGHT, AC EXPERIENCED AN ENGINE OIL HOT LIGHT, THE EMERGENCY PROCEDURE IN THE AFM IS TO LAND AS SOON AS POSSIBLE. THE AIRCRAFT WAS LANDED IN A FIELD WITHOUT INCIDENT. FAA POI, WAS NOTIFIED. UPON INVESTIGATION IT WAS DETERMINED THAT THE OIL COOLER BYPAug 10, 2007 · N911AM · Agusta A119SDR DL76L060625Valve · unserviceableLT IDG VALVE STATUS LIGHT FWD TO MCO PER MEL 75-21-01C LOCKED VALVE DISP APPROVED. REMOVED IDG AIR OIL HEAT EXCHANGER AND VALVE PER AMM. INSTALLED IDG AIR OIL HEAT EXCHANGER VALVE PER MM NEEDS LEAK CK RAN ENG LEAK CK GOOD VOLTS FREQS GOOD MSG CLEARED MCO ANDAug 3, 2006 · N197DN · Boeing 767332SDR AU510001444Bypass Valve · disintegrated(AUS) RH ENGINE OIL BYPASS VALVE (VERNATHERM) BREAKING UP IN AREA OF CIRCLIP RING. METAL CONTAMINATION OF OIL SYSTEM. (OTHER CAUSE: MATERIAL ) (CASA# 510001444)Oct 6, 2005 · Piper PA31350SDR HNAA0500075Engine · overtempNR 2 ENGINE OIL TEMP WENT INTO RED ON TAKEOFF, REDUCED POWER AND STABILIZED IN YELLOW. REMOVED AND REPLACED THE OIL FUEL HEATER.Aug 9, 2005 · N327EN · Dhav DHC8311SDR HNAA0500068Valve · stickingNR 1 ENGINE OIL TEMPERATURE REACHED 120 DEGREES C AND REDUCED TO 115 DEGREES C WHEN FUEL AUXILLARY PUMP SELECTED ON. REMOVED AND REPLACED OIL COOLER THERMAL VALVE.Jul 11, 2005 · N907HA · Dhav DHC8102SDR CA040628005Door · failed(CAN) DURING CLIMB OUT THE FLT CREW NOTICED THE OIL TEMPERATURE RISING TO THE RED LINE. THE OIL COOLER SWITCH WAS SELECTED FROM (AUTO) TO (MANUAL) OPEN WITH NO RESOMNSE. THE OIL TEMPERATURE CONTINUED TO CLIMB. THE ENGINE WAS SHUT DOWN ANDTHE PROP WAS FEATHEREDJun 25, 2004 · Cvac 440SDR AUS20040491Valve · failed(AUS) ENGINE OIL TEMPERATURE REGULATING VALVE (VERNATHERM) BREAKING UP. METAL CONTAMINATION OF ENGINE OIL SYSTEM.May 31, 2004 · Piper PA31350SDR CA031009003Control Valve · erratic(CAN) ENGINE OIL TEMPERATURE WITH FLUCTUATION ON LT ENGINE IN FLIGHT, IN RESPECT WITH THROTTLE LEVER. TEMPERATURE CONTROL VALVE REPLACED WITH NEW UNIT, GROUND POWER CHECK CARRIED OUT SATISFACTORYOct 7, 2003 · Lear 35LEARSDR BAQA089499Transducer · fluctuatesREMOVED DUE TO FLUCTUATING OIL PRESSURE AT NR 1 ENGINE. REPLACED WITH SERVICEABLE UNIT. 9/29/03Sep 29, 2003 · N118WS · Urocop EC135T1SDR BAQA089482Indicator · erraticTEMPERATURE READING ERRATIC. REPLACED WITH SERVICEABLE UNIT. 9/26/03Sep 20, 2003 · N223HX · Bell 222USDR CA030908010Relief Valve · failed(CAN) LT ENGINE OIL TEMP WENT INTO THE YELLOW ON CLIMB OUT. PILOT DID A PRECAUTIONARY SHUTDOWN OF THE ENGINE AND RETURNED TO THE AIRPORT.Aug 27, 2003 · Beech B300B350CSDR HEEA088549Indicator · reads highTEMPERATURE READS HIGH. SHOP REPAIR.Jul 28, 2003 · N2014K · Bell 412SDR DHL2003726009Tee Fitting · leakingON CLIMBOUT, NR 3 ENGINE OIL QUANTITY DECREASING RAPIDLY. WHEN OIL PSI WENT BELOW 40 PSI, PERFORMED IN FLIGHT ENGINE SHUTDOWN ABNORMAL PROCEDURES. FOUND PLUG ON NR 3 ENGINE OIL COOLER SUPPLY T-FITTING PARTIALLY INSTALLED/THREADS IN FITTING WERE STRIPPED. REJun 11, 2003 · N726DH · Boeing 727228
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