JASC 7520

Service difficulty reports · 329

Reports filed under 7520 · Engine Cooling 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 = '7520'
  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 UIEA2014062700281Tube · damagedENG 2 TURBINE CASE COOLING HIGH PRESS AIR SUPPLY TUBE DENTED. R & R NR 2 ENG TURBINE CASE COOLING HIGH PRESS AIR SUPPLY TUBE IAW AMM 70-00-00.Jun 27, 2014 · N641GT · Boeing 76738ESDR EPUA20140325001Adapter · looseRIGHT POWER LEVER HIT STOP WITHOUT DEVELOPING FULL POWER. RT STARTER GEN COOLING DUCT ADAPTER PN 101-910062-7, LOOSE FROM THE STARTER GEN & INTERFERING WITH THE FUEL CONTROL INPUT LINKAGE TRAVEL. RE SECURED THE COOLING ADAPTER CAP PROPERLY TO REMEDY THIS CONMar 24, 2014 · N575Z · Beech 1900CSDR UIEA2014032200125Valve · leakingLT ENG DRAIN MAST DRIPPING FUEL, FOLLOWED LINE TO TCC VLV. R & R LPTCC VLV IAW AMM 75-24-01 206. COMPLIED WITH TEST 12, EEC, ECU ACTUATORS IAW AMM 71-00-00 PP 593, NO LEAKS, LPTCCV FULL TRAVEL OBSERVED.Mar 22, 2014 · N641GT · Boeing 76738ESDR YENA20140216036Bolt · missingBOTTOM STARBOARD ENGINE PANEL WAS FOUND ON RUNWAY. FURTHER INSPECTION REVEALED BOLT MISSING AT NR 2 ENGINE TURBINE COOLING (TCA) TUBE REAR FLANGE. INSTALLED AND SAFETIED BOLT AT TCA TUBE REAR FLANGE, IPC 75-23-49-81A, ITEM 100, IAW 75-23-49-00. NOTE: THIS MFeb 16, 2014 · N658JB · Airbus A320232SDR ASAA2014021606865Unknown · unknownNR 2 EEC LOGGED ECONOMIC FAULT 75-10462. HPTACC DEMAND & POSITION SIGNALS DISAGREE 7 OF LAST TEN FLIGHTS. ACFT GROUNDED. CW TC 78273000. FAULT CODE 75-10462 NOT FOUND.Feb 16, 2014 · N577AS · Boeing 737890SDR CALA2013122693916Inlet · damagedNR 1 ENG INBD C DUCT COOLING AIR INLET NOT SEALANT MATING SURFACE. REPAIRED NR 1 ENG INBD C DUCT COOLING AIR INLET MATING SURFACE.Dec 22, 2013 · N663UA · Boeing 767322SDR CALA2013121293629Actuator · leakingNR 2 ENG FUEL LEAKING EXTERNALLY AT TCC ACTUATOR & FUEL LEAKING FROM DRAIN LINE COMING FROM TCC ACTUATOR LEADING TO DRAIN MAST. INSTALLED NEW ACTUATOR IAW AMM 75-24-05 & ADJUSTED IAW AMM 75-24-00. IDLE RUN TEST & CMC TEST IAW AMM 71-00-00. TEST PASSED NO FADec 11, 2013 · N119UA · Boeing 747422SDR CALA2013121293620Shutoff Valve · faultyNACELLE VENT VLV LT ENG 1 NACELLE ZONE VENT VLV NOT IN COMMANDED POSITION. REPLACED NR 1 ENG NACELLE ZONE VENT SHUT OFF VLV IAW AMM 75-23-02. ENG RUN SHOWS VLV OPERATIONS CHECKED GOOD. PN 6469017, SN OFF 0027, SN ON 0141 & PN 5910514-104.Dec 11, 2013 · N792UA · Boeing 777222SDR ASAA2013112896561Valve · failedDURING DESCENT, NR 1 ENGINE FAIL & SOURCE OFF LIGHT ILLUMINATED, N2 OBSERVED TO DECREASE BELOW 35, AUTO-RELIGHT SUCCESSFUL AS ENGINE ACCELERATED TO IDLE BEFORE QRH SHUTDOWN PROCEDURE COULD BE COMPLETED, AFTER LANDING NR 1 ENGINE CONTROL LIGHT ILLUMINATED. ACFNov 28, 2013 · N566AS · Boeing 737890SDR CALA2013112593211Actuator · stuckTURBINE CASE COOL LPT RT ENG LPT CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL SAFE POSITION. REPLACED NR 2 ENG TCC ACT. IAW MM 75-24-05 PG401 & ACCOMPLISHED RIG IAW MM75-24-00 PG501. ACCOMPLISHED TEST 3,6,&15 IAW MM71-00-00 PG501. OPERATIONS & LENov 23, 2013 · N798UA · Boeing 777222SDR SWAA2013112022629Control Valve · faultyAIR TURN BACK, DECLARED EMERGENCY AFTER TAKEOFF, TOWER REPORTED FROM GROUND VEHICLE CONTRAIL FROM LT ENGINE NR 1 CLIMBING THROUGH 12,000 FEET WE HAD A 600 POUND IMBALANCE. R &R HPT CLEARANCE CONTROL VALVE IAW MM.Nov 19, 2013 · N228WN · Boeing 7377H4SDR CALA2013102392310Valve · failedCREW REPORT LT ENG AO VLV STATUS MESSAGE WILL NOT CLEAR. DEACTIVATED AO COOLER VLV IN THE OPEN POSITION IAW MM 75-21-2 MEL 7521G, WORK WITH DF723.Oct 22, 2013 · N654UA · Boeing 767322SDR CALA2013102292253Thermocouple · out of toleranceNR 1 ENG TCA THERMOCOUPLE OUT OF RANGE CH. B. REPLACED NR 1 ENG TCA PROBE IAW AMM, OPERATIONS CHECKED OKAY.Oct 20, 2013 · N799UA · Boeing 777222SDR CALA2013101692131Shutoff Valve · malfunctionedDURING TROUBLESHOOTING OF NR 2 ENG IAW EM4271-2, FOUND LPT COOLING SHUTOFF VLV NOT FULLY CLOSING. FOUND HPT VLV IN THE OPEN POSITION WHEN SHOULD BE CLOSED IAW MM75-24-00-601. REACTIVATED & CHECKED THE TCC ACTUATION SYSTEM IAW AMM 75-24-00. RAN NR 2 ENG ACCOOct 13, 2013 · N658UA · Boeing 767322SDR CALA2013092591446Warning System · activatedMAINT MSG 75-50721 'TURBINE CASE CLG AIR VLV ACTR (L ENG CH B) LPT POSITION FEEDBACK IS OUT OF RANGE' HITS OFTEN.Sep 23, 2013 · N794UA · Boeing 777222SDR CALA2013092091300Actuator · leakingREPORTS OF FUEL LEAK FROM RT ENG DRAIN. FOUND FUEL LEAKING FROM TCC AIR VALVE ACTUATOR. R & R TCC AIR VALVE ACTUATOR IAW MM. OPERATIONS & LEAK CHECKED GOOD.Sep 19, 2013 · N677UA · Boeing 767322SDR CALA2013090490949Shutoff Valve · malfunctionedTEST SHOWED MAINTENANCE MESSAGE 75-40732 TURB VANE COOLING AIR VALVE SOL. THIS ITEM NEEDS TO BE CLEARED TOGETHER WITH DF856. REPLACED NACELLE ZONE SHUT-OFF VALVE. NEEDS OPERATIONS CHECK.Sep 2, 2013 · N221UA · Boeing 777222SDR CALA2013081990563Thermocouple · faultyTHERMOCOUPLE PROBE LT ENGINE CH "B" SIGNAL IS OUT OF RANGE, MESSAGE 75-50801. REPLACED NR 1 ENGINE TCA THERMOCOUPLE PROBE, TESTED GOOD.Aug 18, 2013 · N217UA · Boeing 777222SDR AALA20130815001Tube · shearedLHR CREW REPORTED RT PRESSURE REGULATING & SHUT-OFF VALVE FAILED ON TAKE OFF. EMERGENCY DECLARED FLIGHT RETURNED LHR LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LOWER PNEUMATIC TUBE ON THE RT ENGINE BLEED CONTROLLER THAT HAD SHEARED.Aug 14, 2013 · N758AN · Boeing 777223SDR CA130814001Hose · split(CAN) PILOT REPORTED THAT RED OVERHEAT INDICATOR LIGHT CAME ON IN FLIGHT, PILOT REQUESTED AN IMMEDIATE LANDING FROM THE TOWER AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LT FORWARD RADIATOR COOLING HOSE SPLIT OPEN AND COOLANT LEAKING.Aug 11, 2013 · Diamon DA20A1SDR CALA2013081390411Actuator · faultyTURBINE CASE COOL HPT R RT ENGINE HIGH PRESSURE TURBINE (HPT) CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. REACTIVATED RT LPT TCC IAW MEL7524C. OPS OK IAW ENG SYS TEST 15. DEACTIVATED RT HPT TCC SYS IAW MEL 7524H. INSTALLED "REWORKED"Aug 9, 2013 · N768UA · Boeing 777222SDR CALA2013080890267Actuator · malfunctionedRT ENGINE HIGH PRESSURE TURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION.Aug 7, 2013 · N768UA · Boeing 777222SDR CALA2013072990027Actuator · faultyRT ENG PIMU FAULT MESSAGES EEC CHANNEL A FAULT CAT 2, EEC CHANNEL A TCC FD-BK FAIL, EEC CHANNEL B FAULT CAT 2 AND EEC CHANNEL B TCC FD-BK FAIL FOUND. REPLACED NR 2 ENG TURBINE CASE COOLING AIR VALVE ACTUATOR IAW AMM. PERFORMED PARTIAL RIG.Jul 28, 2013 · N649UA · Boeing 767322SDR UALA2013072305176Actuator · faultyLT ENGINE HIGH PRESSURE TURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. REPLACED TCC AIR VALVE ACTUATOR IAW AMM. PERFORMED TCC VALVE ACTUATOR TEST NR 3 & NR 6 IAW AMM 71-00-00. ACCOMPLISHED TCC SYS INSPECTION CHECK IAW AMM 75-Jul 20, 2013 · N204UA · Boeing 777222SDR UALA2013061304059Valve · malfunctionedNACELLE VENT VALVE, LT ENGINE NACELLE ZONE VENT VALVE NOT IN COMMANDED POSITION. STATUS MSG-7561401, ACTIVE DC MODE.Jun 12, 2013 · N223UA · Boeing 777222SDR USAA2013052400004Control Valve · leakingON TAXI IN FROM LANDING WITH ENGINE RUNNING NR 2 GROUND CREW OBSERVED FUEL DRAINING OUT OF DRAIN MAST UNDER ENGINE. AFTER SHUTDOWN FUEL CAME OUT OF DRAIN MAST AND LEFT AN APPROX. 5FT DIAMETER POOL UNDER ENGINE COWLING. TROUBLESHOT LEAK TO HPTACC VALVE NR 2 EMay 23, 2013 · N104UW · Airbus A320214SDR UALA2013032001708Actuator · failedLEFT ENGINE HIGH PRESSURE TURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL/SAFE POSITION. REPLACED NR 1 ENGINE TCC ACTUATOR. RECONNECTED AND RIGGED TCC CONTROL. REPINNED CONNECTOR DM75004 TO NORMAL POSITION. PASSED GROUND TEST 15 AND 3.Mar 19, 2013 · N220UA · Boeing 777222SDR UALA2013011400246Actuator · unknownTURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAILSAFE POSITION. ACCOMPLISHED GROUND TEST ENGINE ACTUATOR AND PASSED.Jan 14, 2013 · N206UA · Boeing 777222SDR UALA2013010300045Actuator · leakingDURING IDLE LEAK CHECK OF NR 2 ENGINE FOUND TURBINE CASE COOLING AIR VALVE ACTUATOR LEAKING FUEL. STARTED TO REMOVE TCC ACTUATOR. REPLACED TCC ACT PER MM75- 24-05, ALL CHECKED NORMAL.Jan 3, 2013 · N793UA · Boeing 777222SDR UALA2012121407215Actuator · faulty"TURB CASE COOL HPT L". REMOVED AND REPLACED NUMBER 1 ENGINE TCC ACTUATOR PER MM, HPT CABLE PER MM &0 HPT VALVE PER MM. CREATED SMC ITEM FOR RIG CHECK OF THE NR 1 ENGINE TCC.Dec 12, 2012 · N220UA · Boeing 777222SDR UALA2012121207183Valve · obstructedLEFT ENGINE TVBC AIR SHUTOFF VALVE HAS PIN DEPRESSED. TOOK OFF COVER AND FOUND PART OF SCREW IN VALVE NEED TO REPLACE VALVE. REF IPC 75-25-00A-003 PCN 645-1814. REMOVED & PARTIALLY INSTALLED TCVB VALVE NR 1 ENGINE PER MM. CONTINUED INSTALLATION OF VALVE THDec 9, 2012 · N220UA · Boeing 777222SDR UALA2012112806846Actuator · faultyTURB CASE COOL LPT R RIGHT ENGINE LOW PRESSURE (LPT) TURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. STATUS MSG-7560702 ACTIVE TA HARD. REPLACED TCC ACTUATOR WITH NEW ONE.Nov 28, 2012 · N215UA · Boeing 777222SDR UALA2012110506334Actuator · faultyTURB CASE COOL HPT R RIGHT ENGINE HIGH PRESSURE TURBINE (HPT) CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. 2 ENG 777035 REPLACE TCC ACTUATOR. TURBINE CASE CLG AIR VLV ACTR (R ENG) HPT POSITION FEEDBACK IS OUT OF RANGE'. TCC OPERATESNov 2, 2012 · N214UA · Boeing 777222SDR UALA2012101505869Actuator · faultyTURB CASE COOL HPT R RIGHT ENGINE HIGH PRESSURE TURBINE (HPT) CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. STATUS MSG-7560682 INACTV DC INTER MSG-7560662 ACTIVE DC HARD MSG-7550662 INACTV DC MODE MSG-7550662 INACTV DC MODE MSG-7550Oct 12, 2012 · N216UA · Boeing 777222SDR UALA2012091705222Tube · damagedNR 1 ENGINE BLEED TUBE ASSY ON REAR OF FUEL OIL HEAT EXCHANGER IS DAMAGED ON LOWER END. REMOVED TUBE ASSY, REPLACED TUBE ASSY.Sep 14, 2012 · N595UA · Boeing 757222SDR UALA2012082004640Actuator · leakingON WALKAROUND FOUND FUEL DRIPPING OUT OF LEFT ENGINE. MAINT REPORTED DRIPPING 40 DPM FROM TCC ACT DRAIN NR 2. TCC ACT TO BE REPLACED WITHIN 2C. REPLACED TCC ACTUATOR PER MM. OP CHECK & LEAK CHECK OKAY.Aug 19, 2012 · N220UA · Boeing 777222SDR UALA2012071203763Actuator · faultyRIGHT ENGINE HIGH PRESSURE TURBINE CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION. STATUS A) HPT ACT MSG01- ACTIVE DESCENT TURBINE CASE CLG AIR VLV ACTR (R ENG) HPT ACTUATOR DOES NOT FOLLOW COMMAND. REPLACED NR 2 ENG TCC ACTUATOR AND HAJul 9, 2012 · N796UA · Boeing 777222SDR UALA2012022701192Actuator · leakingNR 2 ENG PH-LP ACTUATOR IS LEAKING FUEL FROM ACTUATOR. REPLACED ACTUATOR, LEAK CHECKED GOOD.Feb 26, 2012 · N407UA · Airbus A320232SDR UALA2012021300862Valve · faultyNR 2 ENG TVBC PIN WAS FOUND RECESSED NOT BROKEN. NR 2 ENGINE TVBC INDICATOR PIN MISSING. TVBC VALVE TO BE REPLACED WITHIN 100 FLIGHT HOURS PER MM. NR 2 ENG TVBC INDICATOR PIN IS PRESENT BUT IS RETRACTED REPLACED VALVE ASSY.Feb 13, 2012 · N204UA · Boeing 777222SDR UALA2012020600707Valve · faultyNR 2 ENG LWR TVBC AIR SHUTOFF VALVE INDICATOR PIN FOUND. FOUND INDICATOR PIN BROKEN. REPLACED INDICATOR PIN PCN 645-4515 AND ACP CLUNK TEST REF MM, VALVE OPERATES NORMALLY. NEEDS TO BE REPLACED WITHIN 100 FLT HRS. INSTALLED VALVE ASSY AND ALL RELATED PLUMFeb 5, 2012 · N221UA · Boeing 777222SDR UALA2012020600705Helicoil · damagedTWO OF THE 6 HELI-COILS THAT RETAIN THE LT LOWER TVBC VALVE ARE DAMAGED BEYOND USE AND WILL NEED REPLACEMENT. REPLACED 2 EACH DAMAGED HELI-COIL AT THE LT LOWER TVBC VALVE.Feb 5, 2012 · N221UA · Boeing 777222SDR UALA2012020300678Actuator · faultyR ENG TCC ACTUATOR MAINT MSG 75-60682 'TURBINE CASE CLG AIR VLV ACTR (R ENG) HPT POSITION FEEDBACK IS OUT OF RANGE' HITS FREQUENTLY. REF EG6630-2 REPLACED NR 2 TCC ACTUATOR REF MM. NEEDS EEC GROUND TEST 15. ACCOMPLISHED TEST. OPS CHECKED NORMAL.Feb 2, 2012 · N782UA · Boeing 777222SDR UALA2012012400496Valve · failedNR 2 ENG TCC HPT VALVE BUTTERFLY IS NOT CLOSED AT THE RIG POSITION. CONTINUE REMOVAL OF NR 2 ENG TCC HPT AIR VALVE. FOUND TCC HPT VALVE FAILED. RPLC'D VALVE SYSTEM OPERATED NORMAL. PASSED MAT TEST.Jan 24, 2012 · N797UA · Boeing 777222SDR UALA2011112706519Valve · bindingNR 2 ENGINE O/B TVBC AIR VALVE POPOUT INDICATOR IN THE CLOSE POSITION. FOUND VALVE BINDING IN CLOSED POSITION. FREED UP VALVE, VALVE OPENS AND CLOSES COMPLETELY. PERFORMED OPERATIONAL CHECK. INDICATOR PIN IN THE EXTENDED POSITION INDICATING VALVE IS NOW OPENov 26, 2011 · N782UA · Boeing 777222SDR UALA2011112306451Valve · failedTURBINE VANE AND BLADE COOLING SYSTEM HAS CAUSED CRUISE EGT HOT AT ETOPS LIMIT. REPLACED NR 1 ENGINE UPPER TVBC VALVE , IAW AMM.Nov 23, 2011 · N223UA · Boeing 777222SDR CALA2011111700750Duct · tornNR 1 ENG EGT ON START AND AFTER START VERY ERRATIC TEMP SWINGS. ENG WAS RUNNING 5 MINUTES AND APPEARED TO BE GETTING HIGHER TEMP SWINGS 425 DEG TO 780 DEG FOUND FLEX DUCT FOR HPTACC TORN. PERFORMED TEMP REPAIR ON DUCT PER ECRA 7200-03038 REV A & RAN ENG AT INov 17, 2011 · N77014 · Boeing 777224SDR UALA2011110305950Tube · crackedNR 1 ENG SILENT SURGE. NR 1 ENG - 6EA FAN BLADES NICKED AS MARKED. INSPECTED BLENDED FAN BLADES ON NR 1 ENG WITH EDDY CURRENT PER MM. NO CRACKS FOUND OK FOR FINAL BLEND. NR 1 ENGINE LPT COOLING TUBE CRACKED COMPLETELY THROUGH. ACPD NR 1 ENG HPC DUCT VISUANov 3, 2011 · N677UA · Boeing 767322SDR UALA2011102505792Duct · crackedNR 2 ENG INBD TCC COOLING DUCT SUPPORT IS BROKEN. COOLING DUCT IS ALSO CRACKED. REPLACED ENGINE.Oct 25, 2011 · N660UA · Boeing 767322SDR UIEA2011101900575Manifold · crackedUPON OPENING OF THE NR 1 ENGINE NACELLE, MX FOUND THE LOWER LPT COOLING MANIFOLD BROKEN AT SEVERAL LOCATIONS. REFER TO FIG 1 FOR DAMAGE LOCATION AND DETAILS. DUE TO PRESENCE OF CRACKS AROUND THE LPT COOLING MANIFOLD WAS OVER LIMITS WITH AMM 75-24-00, SUBMITTEOct 13, 2011 · N524MC · Boeing 7472D7BSDR UALA2011101205548Actuator · malfunctionedTURB CASE COOL HPT R RIGHT ENGINE HIGH PRESSURE TURBINE (HPT) CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAIL-SAFE POSITION.Oct 12, 2011 · N228UA · Boeing 777222
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