JASC 7921

Service difficulty reports · 982

Reports filed under 7921 · Engine Oil Cooler, 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 = '7921'
  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 CA140411002O-Ring · leaking(CAN) THE NR 1 ENGINE OIL COOLER OUTLET LINE WAS LEAKING AT THE CONNECTION TO THE OIL COOLER. UPON INSPECTION, IT WAS DISCOVERED THAT THE OUTLET LINE O-RING WAS DAMAGED, NICKED. THE LINE/O-RING HAD BEEN IN PLACE SINCE MFG. MAINTENANCE REPLACED THE O-RING ANApr 10, 2014 · Bombdr DHC8400SDR CA140305006Bearing · failed(CAN) ON A COMBINING GEAR BOX REMOVAL, AME NOTICED A LARGE AMOUNT OF BLACK FRETTING MATERIAL BETWEEN THE C BOX AND BLOWER JOINT FLANGE. ONCE CLEANED UP THE AME WAS ABLE TO SEE THAT THE OUTER RACE OF THE BEARING ON THE BLOWER WAS ROTATING IN THE BLOWER CASTINGMar 5, 2014 · Bell 412SDR N6WA20140301001Oil Cooler · faultyLEFT ENG OIL TEMP HIGH. R & R NR 1 ENG FUEL & OIL HEAT EXCHANGER IAW CRJ700 79-21-09, LEAK & OPERATIONS CHECKED GOOD.Mar 1, 2014 · N161GJ · Cndair CL6002C10SDR CA140224024Bearing · failed(CAN) ON C BOX REMOVAL THE OIL COOLER BLOWER ON NR 2 SIDE HAD BOTH FWD AND REAR BEARINGS BEGINNING TO FAIL. GREASE HAD BEEN EJECTED FROM FWD BEARING ALONG WITH A BURNED ODOR. SHOP TECH: BEARING FAILED IN SERVICE. NO INDICATION OF CAUSE. IT APPEARS THE FAIFeb 13, 2014 · Bell 412SDR SWIA201335820Oil Cooler · failedLT ENG OIL PRESSURE WARNING LIGHT, AURAL WARNING & FLUCTUATING INDICATION, SHUT DOWN ENG. FLT 7400 REPLACED LT ENG OIL COOLER.Dec 22, 2013 · N581SW · Emb EMB120ERSDR ASAA2013120796652Oil Cooler · leakingFOUND NR 2 ENGINE IDG OIL COOLER LEAKING. ACFT GROUNDED. REPLACED NR 2 IDG AIR/OIL COOLER REF MM 24-11-21. PERFORMED IDLE POWER ENGINE RUN, NO LEAKS NOTED. ACFT OK FOR SERVICE.Dec 7, 2013 · N508AS · Boeing 737890SDR 2013FA0000661Oil Cooler · cloggedRT. ENGINE, OIL TEMP REDLINE (HIGH), OIL PRESSURE LOW (REDLINE). ATTEMPTED TO SLOW ACFT AND UNCONGEAL OIL COOLER. THIS DID NOT HELP. PERFORMED PRECAUTIONARY SHUTDOWN. ON LANDING, MX INSPECTED FOR POSSIBLE OIL COOLER CONGEALING, DUE TO THE EXTREME OAT (-21°F)Nov 19, 2013 · N59826 · Piper PA31350SDR SWIA201335212Oil Cooler · crackedLT ENGINE OIL COOLER AIR OUTLET CRACKED ON INBD SIDE. C-CHECK PERFORMED REPAIR TO LT ENGINE OIL COOLER OUTLET INBD SKIN IAW ETD.Oct 17, 2013 · N568SW · Emb EMB120ERSDR 2013FA0000596Oil Cooler · leakingCREW OBSERVED OIL PRESSURE GRADUALLY DECREASING UNTIL OIL PRESSURE ANNUNCIATOR ILLUMINATED ON LT ENGINE. ENGINE WAS SHUTDOWN AND A SINGLE ENGINE LANDING WAS MADE AT HOME AIR FIELD. UPON INSPECTION BY MAINTENANCE THE OIL COOLER WAS FOUND TO HAVE FAILED NEAR THEOct 17, 2013 · N585ND · Piper PA44180SDR CA131008014Oil Cooler · cracked(CAN) ENGINE OIL COOLER FLANGE FOR ATTACHING ENGINE BAFFLING FOUND CRACKED. NO OIL LEAKS FROM OIL COOLER FOUND AS THIS IS AN EXTERNAL FLANGE FOR BAFFLING MOUNTING ONLY. CRACK LENGTH 75 PERCENT OF FLANGE. MOUNTING LUGS ALSO FOUND TO BE DEVELOPING SMALL CRACKSOct 7, 2013 · Cessna U206GSDR CALA2013100291654Bypass Valve · leakingNR 4 ENG 10 DPM STATIC LEAK, IDGS FUEL OIL HEAT EXCHANGER GANG DRAIN, OIL LEAK NOT PRESENT AFTER 4 HRS ENG COOLED. DRAIN LINES FOR FUEL OIL HEAT EXCHANGER HAVE TWO EACH TEE CAPS REMOVED FOR TROUBLESHOOTING. MOTORED ENG FOUND FOC BYPASS VALVE LEAKING 6 DPM ASep 30, 2013 · N117UA · Boeing 747422SDR CALA2013092491394O-Ring · damagedNR 2 ENG OTBD BYPASS VALVE ON AIR OIL COOLER IS LEAKING. REPLACED O-RINGS ON OTBD BYPASS VALVE ON AIR OIL COOLER IAW IPC 79-21-00A-007A. ACP 5 MIN IDLE LEAKED CHECKED GOOD.Sep 23, 2013 · N516UA · Boeing 757222SDR CA130925003Oil Cooler · leaking(CAN) ENGINE OIL COOLER SPRUNG A LEAK, PILOT DISCOVERED DURING A DI. MAINTENANCE DISPATCHED, COOLER CHANGED, ACFT RETURNED TO SERVICE. COOLER TO BE SENT OUT TO SEE IF IT`S REPAIRABLE.Sep 3, 2013 · Snias AS350B2SDR CA130905001Oil Cooler · leaking(CAN) THE PILOT SHUTDOWN THE ENGINE DUE TO MAIN OIL PRESSURE FLUCTUATION FOLLOWED BY LOSS OF OIL PRESSURE. AN AIRFRAME COOLER OIL LEAKAGE WAS DETERMINED AS THE CAUSE OIL PRESSURE LOSS.Aug 20, 2013 · Dhav DHC8101SDR QXEA2013082001291Oil Cooler · crackedNR 2 OIL COOLER ASSY, CRACKED. REMOVED THE OIL COOLER IAW AMM 79-21-01-000-801. INSTALLED NR 2 OIL COOLER ASSY IAW AMM 79-21-01-400-801, STEP 4A THRU 3C.Aug 20, 2013 · N412QX · Bombdr DHC8402SDR CA130826017Oil Cooler · leaking(CAN) DURING CRUISE THE RT ENGINE LOST OIL AT A RATE THAT CAUSED THE PILOT TO SHUT THE ENGINE DOWN. ON INVESTIGATION, THE ENGINEERS FOUND THAT ONE OF THE HELICOILS ON THE OIL COOLER INLET FITTING HAD DISLODGED, CREATING AN ESCAPE PATH FOR THE ENGINE OIL. THAug 15, 2013 · Dhav DHC8102SDR CA130724006Hose · worn(CAN) DURING INSPECTION, FOUND ONE OF THE OIL COOLER HOSE RUBBING ON THE RT MUFFLER. HOSE WAS REMOVED AND HAD CHAFED DOWN TO THE METAL BRAIDING. NO LEAKS, NEW HOSE WAS INSTALLED AND SECURED IN ORDER TO PREVENT HOSE FROM COMING IN CONTACT WITH THE EXHAUST.Jul 23, 2013 · Cessna 210RSDR ASMF201308013Lubrication Unit · leakingDURING TRANSIT CHECK, AN OIL LEAK DETECTED ON RT ENGINE. MX PERSONNEL PERFORMED ENGINE LEAKING INSPECTION IAW MM 73-21-00 OIL LEAK ON THE LUBRICATION UNIT. REPLACED IAW MM 79-21-01 AND RT ENGINE WAS RAN IAW MM 71-00-00, TEST 3A, ALL CORRECT.Jul 18, 2013 · N788XA · Boeing 737752SDR UALA2013070204619Oil Cooler · leakingNR 1 ENGINE OIL COOLER LEAKING. PER MT 79-007, RAN NR 1 ENG AND FOUND THE LOWER AFT CORNER OF THE OIL COOLER TO BE LEAKING OIL AT 12-15 DROPS PER MINUTE. OIL COOLER REPLACED. LEAK CHECKED GOOD, NO MESSAGES.Jun 30, 2013 · N458UA · Airbus A320232SDR CA130717010Valve · damaged(CAN) VTS HAS REPORTED THAT FRETTING DAMAGE HAS BEEN FOUND ON THE VALVES INSTALLED IN THE OIL COOLER.Jun 21, 2013 · Dhav DHC6*SDR CA130314014Blower · loose(CAN) DURING HEAVY MAINTENANCE THE IMPELLER RETENTION NUT WAS FOUND TO HAVE NO CLAMP-UP TORQUE ON THE IMPELLER AND THE WASHER BENEATH THE NUT COULD FLOAT FREELY. THE WITNESS MARK ON THE NUT TO THE SHAFT WAS STILL INTACT.Mar 14, 2013 · Bell 212SDR CA130228007Bypass Valve · failed(CAN) AFTER TAKEOFF AT APPROXIMATELY 15000 ASL, THE OIL TEMP ON THE NR 2 ENGINE INDICATED 105 DEGREES. IAW QRH POWER WAS REDUCED BY 20 PERCENT AND TIMER WAS SET TO MONITOR THE TEMPERATURE. TEMPERATURE WENT TO 126 DEGREES THE ENGINE WAS SHUT DOWN AS PER QRH. EMFeb 26, 2013 · Bombdr DHC8400SDR CA130314006Bypass Valve · failed(CAN) DURING CLIMB PASSING 16,000 OIL TEMPERATURE ON THE NR 2 ENGINE WAS INDICATING 107 DEGREES AND CONTINUE TO CLIMB TO 113 DEGREES. THE TIMER WAS STARTED AT WHEN THE TEMP WAS RECOGNIZED AT 107 DEGREES AFTER THE E/A CHECKLIST WAS COMPLIED WITH AND POWER REDUFeb 22, 2013 · Bombdr DHC8400SDR CA130311014Bypass Valve · failed(CAN) ON CLIMB, NR 2 ENGINE OIL TEMP READ 105 DEGREE & CLIMBING. QRH CONSULTED TEMP ROSE TO 114 DEGREE, ACFT RETURNED BACK TO BASE. MAINTENANCE REPLACED THE AIR COOLED OIL COOLER BYPASS VALVE.Feb 7, 2013 · Bombdr DHC8400SDR 2013FA0000042Oil Cooler · leakingNR 2 ENGINE OIL COOLER LEAKS. FOUND DURING DAILY INSPECTION PRIOR TO FLIGHT. REPLACED WITH O/H UNIT.Jan 18, 2013 · N366EV · Snias SA330JSDR 2013FA0000043Oil Cooler · leakingNR 1 ENGINE OIL COOLER LEAKAGE FOUND DURING DAILY INSPECTION PRIOR TO FLIGHT. COOLER REPLACED WITH A SERVICEABLE UNIT FROM ANOTHER ENGINE. COOLERS ARE BEING REPAIRED/REBUILT.Jan 16, 2013 · N366EV · Snias SA330JSDR 2013F00033Oil Cooler · leakingNR 1 ENGINE OIL COOLER LEAKAGE FOUND DURING DAILY INSPECTION PRIOR TO FLIGHT. COOLER REPLACED WITH A SERVICEABLE UNIT FROM ANOTHER ENGINE. COOLERS ARE BEING REPAIRED/REBUILT BY PACIFIC OIL COOLERS OF LA VERNE, CA, CERTIFICATE # RF3R813L.Jan 16, 2013 · N366EV · Snias SA330JSDR QMLA2013011513007Oil Cooler · leakingDURING AIRWORTHINESS PREFLIGHT CHECK, MECHANIC NOTICED OIL COMING FROM INTERNAL AREAS OF OIL COOLER, ORDERED 2 NEW OIL COOLERS AND INSTALLED. SEVERAL RUNUPS WERE ACCOMPLISHED WITH NO OIL LEAKAGE OCCURRING, BUT DID NOT FLY. PILOT TRAINING, THE ACFT FLEW APPROJan 15, 2013 · N152AC · Snias AS350B2SDR UALA2013011400200Oil Cooler · leakingLEFT ENGINE OIL LOSS, FLIGHT DIVERTED. REPLACED LEFT ENGINE AIR-OIL COOLER PER MM. OPS & LEAK CHECKED GOOD.Jan 13, 2013 · N664UA · Boeing 767322SDR CA130104003Oil Cooler · failed(CAN) NR 2 ENGINE IN FLIGHT SHUTDOWN ON ACFT DUE TO CREW REPORTING THE NR 2 ENGINE OIL TEMP HOT, MAX 113 DEGREES. QRH FOLLOWED WITH ENGINE SHUTDOWN. OIL COOLER REPLACED. AFTER REPLACEMENT OF THE OIL COOLER THE SYS TESTED SERVICEABLE AND ACFT HAS BEEN RETURNEJan 3, 2013 · Bombdr DHC8400SDR CA121203015Oil Cooler · leaking(CAN) 2 PLATES FOUND TO BE LEAKING.Dec 3, 2012 · Cessna 172PSDR CA121118002Oil Cooler · wrong part(CAN) INCORRECT OIL COOLER FOUND TO BE INSTALLED BY PN AND INSTALLATION OF OIL COOLER MOVED FROM REAR BAFFLE ASSY IAW IPC FOR SN OF ACFT TO FIREWALL. UNAPPROVED PARTS USED TO INSTALL ON FIREWALL, MADE PARTS THAT DO NOT CONFORM. NO RECORD OF INSTALLATION ON FNov 16, 2012 · Cessna 172PSDR UALA2012111306536Oil Cooler · faultyFUEL-OIL COOLER RPL. THIS CALLOUT TO BE WORKED WITH LM4924. IF NO LEAKS FOUND, REPLACE LEFT ENGINE FUEL OIL COOLER PER MM79-21-01-401. PCN 645-9059. REF IPC 79-21-00-005. REMOVED AND REPLACED LEFT ENGINE OIL COOLER AS PER AMM. OPS AND LEAK CHECK GOOD.Nov 12, 2012 · N675UA · Boeing 767322SDR USAA2012111400006Oil Cooler · leakingONE HOUR OUT OF DTW, ECAM - FUEL IMBALANCE INDICATION. FLIGHT ATTENDANT CONFIRMED VAPOR STREAMING OFF OF LEFT ENGINE PYLON. DIVERTED TO OMA. REMOVED AND REPLACED NR 1 ENGINE FCOC (FUEL OIL COOLER) IAW AMM 79-21-43. OPS CHECKED GOOD.Nov 10, 2012 · N835AW · Airbus A319132SDR CA121121005Oil Cooler · split(CAN) ACFT REPORTED TO HAVE DIMINISHING OIL PRESSURE DURING FLIGHT ON THE RT ENGINE. ENGINE SHUTDOWN AND ACFT RETURNED TO BASE SAFELY. PILOTS DEBRIEFED AND ESTABLISHED THAT THE ENGINE WAS SHUTDOWN WHEN PRESSURE JUST WENT INTO THE TOP OF THE AMBER RANGE TO SAVNov 7, 2012 · Dhav DHC8101SDR CA121109014Oil Cooler · leaking(CAN) ACFT DEPARTED AIRPORT, APPROXIMATELY 15 MINUTES AFTER TAKEOFF, ENGINE NR 2 OIL PRESSURE GAUGE STARTED TO FLUTTER AND THE LOW OIL PRESURE LIGHT ILLUMINATED INTERMITTENTLY. THE PILOTS SHUTDOWN ENGINE NR 2, FEATHERED THE PROPELLER AND RETURNED TO DEPARTURENov 7, 2012 · Braero HS7482ASDR UALA2012110506306Oil Cooler · faultySTATUS MSGL ENG A-O VALVE. CREW REPORT PROBLEM ON LEFT ENGINE SEE DF647 BOTH ITEMS RELATED. BITE CHECK SHOWS EEC CH A AOC FD-BK FAIL. AOC VALVE DEACTIVATED PER MEL CARD 75040. VALVE IN OPEN POSITION AND PLUG DISCONNECTED AND SAFTIED. DF PLACARD PLACED ON Nov 2, 2012 · N657UA · Boeing 767322SDR HDNA201210240005Shaft · failedSHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.Oct 24, 2012 · N955ME · Bolkms BK117B2SDR UALA2012101805948Oil Cooler · faultyNR 2 ENGINE-TS AOC MSGS, AOC? 6448-2 ESN 727790 - ENGINE IS DOWNLINKING CH A&B AOC TR CHECK FAIL MSG 351-23. REMOVED NR 2 ENGINE AIR-OIL COOLER. REF AMM 79-21-09 TASK 79-21-09-004-801. REF EG7491-2, REPLACE NR 2 ENGINE AIR-OIL COOLER (HEAT EXCHANGER).Oct 18, 2012 · N648UA · Boeing 767322SDR CA121002005Motor · failed(CAN) OIL TEMP RISING WHEN ACFT RUNNING ON THE GROUND. FAN NOT SPINNING WHEN SUPPLIED WITH 28V. RATTLING SOUND WHEN ROTATED BY HAND. MOTOR FAN REPLACED, AND THEN NORMAL OPERATION OF THE CIRCUIT.Sep 27, 2012 · Snias AS350B2SDR UALA2012092405406Drain Line · brokenNR 2 ENGINE ACOC DRAIN LINE BROKEN OFF AT DRAIN MAST. REPLACED NR 2 ENGINE DRAIN MAST ASSY.Sep 24, 2012 · N448UA · Airbus A320232SDR UALA2012091405203Oil Cooler · leakingENGINE 2 ACOC LEAKING OIL, CHRONIC. RAN ENGINE FOR 10 MINUTES FOUND NR 2 ACOC LEAK AT 4 DROPS PER MINUTE ACOC NEEDS REPLACEMENT WITHIN 25 HOURS PER MT79-007. REPLACED NR 2 ENGINE ACOC REF MM 79-21-51-000-010A, MM 79-21-42-0000-010-A, MM 79-21-51-400- 010-A ASep 13, 2012 · N454UA · Airbus A320232SDR CA121010003Oil Cooler · leaking(CAN) THE PILOT NOTICED OIL OVER THE BACK AND RT SIDE OF THE ENGINE AFTER FLYING FOR AN HOUR. THIS HAS BEEN A RECURRING OIL LEAK, WHICH COULD NOT BE FOUND WITH THE ENGINE NOT OPERATING. DURING GROUND IDLE OIL WAS NOTICED TO BE COMING OUT THE SIDE OF THE OIL Sep 12, 2012 · Robsin R22BETASDR CA120912004Actuator · failed(CAN) AN ACFT EXPERIENCED A HIGH OIL TEMP EVENT AND THE CREW SHUTDOWN THE NR 1 ENGINE IAW CHECKLIST. THE NR 1 ENG OIL TEMP WAS 125 DEGREES. ON-CALL MAINTENANCE VERIFIED OIL COOLER DOOR ACTUATOR FAILED OPS CHECK. BYPASS VALVE AND OIL COOLER DOOR ACTUATOR TO Sep 11, 2012 · Bombdr DHC8400SDR QXEA2012091101063Bypass Valve · malfunctionedAT APPROXIMATELY 16,000 FT, OIL TEMP 107 DEGREES AND CLIMBING SLOWLY. STARTED HIGH OIL TEMP CHECKLIST, OIL TEM CLIMBED TO 125 DEGREES. SHUTDOWN NR 1 ENGINE. LANDING UNEVENTFUL. INTEROGATED CDS AND FOUND NR 1 ENGINE PEAK VALUE 125.7 DEGRESS C AND AREA B 698Sep 11, 2012 · N435QX · Bombdr DHC8402SDR HDNA201209090004Shaft · failedSHAFT HAS FAILED SEVERAL TIMES IN THE LAST 6 MONTHS. THE OIL COOLER ASSEMBLY HAS BEEN CHANGED ONCE. WEATHER HASN’T BEEN A PROBLEM. WOULD BE GUESSING TO SAY WHAT WAS CAUSING THE FAILURES.Sep 9, 2012 · N955ME · Bolkms BK117B2SDR CA120910001Bypass Valve · failed(CAN) CREW COMMANDED IN FLIGHT ENGINE SHUTDOWN OF NR 2 ENGINE DUE TO NH, ITT & OIL TEMP RISING. OIL COOLER BY-PASS VALVE REPLACED.Sep 8, 2012 · Bombdr DHC8400SDR CA120907002Actuator · failed(CAN) NR 2 OIL TEMP CLIMBED TO 117. CHECK LIST COMPLETED WITH AND TEMP REDUCED TO 114. IAW CHECK LIST, NR 2 ENGINE WAS SHUTDOWN. ACFT LANDED. ACOC THERMAL VALVE AND ACOC DOOR ACTUATOR REPLACED. NO HISTORY ON THIS ACFT IN LAST 60 DAYS.Aug 31, 2012 · Bombdr DHC8400SDR CA120823004Bypass Valve · failed(CAN) DURING FLIGHT, FL 120, OIL TEMPERATURE RAISED. AFTER 6 MIN OIL TEMP RAISED AGAIN EVEN BY REDUCING THE POWER SETTING INTO THE RED BAND. TEMPERATURE GREATER THEN 125 DEGREE C. THE CREW DECIDED TO SHUTDOWN THE ENGINE AND DECLARED EMERGENCY. TROUBLESHOOTINAug 21, 2012 · Bombdr DHC8400SDR UALA2012082104659Oil Cooler · leakingREPEAT WRITEUPS FOR IDG OIL SERVICE AND IDG PREVIOUSLY REPLACED AND NO EXTERNAL LEAKS NOTED. AT END OF FLT 305-20 OGG-SFO REPLACE THE FUEL OIL HEAT EXCHANGER PER MM 79-21-01 P401 AND BYPASS VALVE PER MM. PARTS NEEDED FOX PCN 645-9029, BYPASS VALVE 645-9061,Aug 21, 2012 · N590UA · Boeing 757222
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