JASC 7520

Service difficulty reports · 328

Reports filed under 7520 · Engine Cooling System, 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 = '7520'
  ORDER BY difficulty_date DESC"

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SDR ASAA2021052334923Actuator · faultyWHILE ACCOMPLISHING T/C 78273000 FOUND SHORT TIME FAULT MSG NBR: 75-20401 THE VSV POSITION SIGNALS DISAGREE DURING FLIGHT LEG 1. DEFERRED PER T/C 78273000. GROUNDED - YES. #1 ENG SHOWS LEG 4 AND 9 FAULTING 75-20401. RH AND LH VSV RANG OUT: LH IS SIGNIFICANTLY May 23, 2021 · N533AS · Boeing 737890SDR ASAA2021041734623Valve · out of limitsACCOMPLISHING TC 78276000 FOUND #2 ENG FAULT CODE 75-10592. THE TBV POSITION SIGNAL IS OUT OF RANGE. LONG TIME FAULT. GROUNDED - YES. REMOVED AND REPLACED ENGINE #2 TBV REF B737-800 AMM 75-23-01-000-801-F00/75-23-01-400-801-F00, PERFORMED IDLE POWER LEAK CHECKApr 17, 2021 · N516AS · Boeing 737890SDR ASAA2021040334502Valve · leakingDURING ENG RUN REF L/P 60093274, FOUND HPTACC VALVE DRAIN DRIPPING. GROUNDED - YES. FOUND DRAIN LEAKING 4 DRM REF B737-900 AMM 71-21-00-200-801-F00 FIM 605. REMOVED AND REPLACED #2 ENG HPTACC VALVE IAW AMM 75-21-01, OPS CHECK GOOD, LEAK CHECK GOOD. NO FURTHER Apr 3, 2021 · N431AS · Boeing 737990ERSDR ASMF20210621002Valve · leakingDURING TRANSIT CHECK, IT WAS DETECTED A FUEL LEAK AT LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION, DETECTING THE LEFT ENGINE HPTACC VALVE; SO THE LEFT HPTACC VALVE WAS REPLACED IAW AMM 75-21-01, TESTED CORRECT.Feb 25, 2021 · N845AM · Boeing 737852SDR GTIA2021011835551Valve · out of roundENGINE 1 SYSTEM FAULT. IN FLIGHT NO ABNORMAL PARAMETERS OBSERVED, REF TFU 75.24.00001. FOUND ACC VALVE OUT OF ROUND. R & R ACC VALVE 4020KM1, IAW AMM 75-24-01. PERFORMED FADEC SYSTEM IDLE TEST, IAW AMM 73-21-00, TEST OKAY. PERFORMED DRY MOTOR ENGINE ACTUAJan 17, 2021 · N905NK · Airbus A320271NSDR 9JLA2021020421591Duct · leakingTHE FLIGHT CREW REPORTED THAT DURING CLIMB-OUT AFTER TAKEOFF THEY RECEIVED A RIGHT ENGINE PYLON OVERHEAT CAS MESSAGE. THE CREW RAN THE CHECKLIST AND WAS ABLE TO CLEAR THE FAULT. THE MAINTENANCE VENDOR TROUBLESHOT AND DETERMINED THE HIGH PRESSURE AIR DUCT P/N LDec 21, 2020 · N56JP · Lear 45LEARSDR ASAA2020120133653Valve · leakingCREW REPORTS ENGINE 1 IS LEAKING FUEL, PER B737-800 AMM TASK 71-71-00-200-801-F00 FOUND LEAK AT 15 DPM COMING FROM HPTACCV DRAIN. PERFORMED ENGINE RUN FOR 5 MINUTES AND LEAK STOPPED, AS PER AMM ITEM PLACED ON PLT FOR 25 FLIGHT CYCLES. GROUNDED-YES. REMOVED Dec 1, 2020 · N577AS · Boeing 737890SDR ASMF202101006Valve · leakingDURING OVERNIGHT CHECK AT MEX STATION, IT WAS DETECTED A FUEL LEAK AT RIGHT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION. DETECTING THE RIGHT ENGINE HPTACC VALVE LEAKING. THE HPTACC VALVE WAS REPLACED, IAW AMM 75-21-01, TESTED CORRECT.Oct 18, 2020 · N377AR · Boeing 73786JSDR YV3R2020101400367Panel · crackedCUSTOMER REPORTED ENGINE PANEL P/N: C310-2 WAS CRACKED.Oct 8, 2020 · Robsin R44SDR ASAA2020073132975Valve · leakingFUEL LEAK OBSERVED UNDER #2 ENGINE. GROUNDED - YES. CHECKED AND FOUND LEAK AT #2 ENG HPTACC DRAIN. LEAK IS 13 DPM WITHIN LIMITS PER B737-800 AMM 71-71-00 FIG 605. RELEASED PER PLT FOR REPAIR WITHIN 25 FC. REMOVED AND REPLACED #2 ENGINE HPTACC VALVE REF AMM 75-Jul 31, 2020 · N534AS · Boeing 737890SDR ASAA2020061832813Valve · leakingNR 1 ENG HPT ACC LEAKING 4 DROPS PER MIN. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENG HPT ACC VALVE IAW AMM 75-21-01-000-801-F00, & AMM 75-21-01-400-801-F00. LEAK CHECKED GOOD AND ACTUATOR TEST C/W -OPS NORMAL.Jun 18, 2020 · N587AS · Boeing 737890SDR HALA2020060500121Valve · malfunctionedETOPS SIGNIFICANT SYSTEM. ENG 1 TURB COOL FAULT. PERFORMED DRY MOTOR OF ENG NR 1 PER AMM 73-21-00-710-809-A. PER MOC NEED TO CHANGE ACC VALVE. REMOVED AND REPLACED NR 1 ENG ACC VALVE PER AMM 75-24-01-400-801-A. PENDING OPS CHECK. OPS AND LEAK CHECK GOOD Jun 4, 2020 · N215HA · Airbus A321271NSDR ASAA2020060832784Warning Message · activatedWHILE PERFORMING T/C 78273000, FOUND MAINT MSG 75-20361, "THE HPTACC SIGNAL IS OUT OF RANGE" ON #1 ENG. GROUNDED - YES. ON DEFERRAL.Jun 2, 2020 · N467AS · Boeing 737990ERSDR ASAA2020052632751Valve · crackedFOUND NR 2 ENG HPTACC VALVE CRACKED AT VALVE BODY. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENG HPTACC VALVE IAW AMM 75-21-01. OPS CHECK, LEAK CHECK GOOD. GROUND VERIFICATION TEST SUCCESSFUL.May 25, 2020 · N428AS · Boeing 737990ERSDR UIEA2020040700705Manifold · cracked#1 ENGINE AFT LPT COOLING AIR MANIFOLD CRACKED AT 5 O'CLOCK POSITION, REFERENCE DMI 126347 #1 ENG TCC INOP PER COMPANY REQUEST.(<P>REMOVED AND REPLACED #5 POSITION LPT COOLING AIR MANIFOLD IAW AMM 75-24-03. OPS CHK GOOD.</P>)Apr 5, 2020 · N1373A · Boeing 76731KSDR UIEA2020033000564Unknown · malfunctionedDURING ENGINE START, AFTER LEFT START SELECTOR PLACED IN "GND", THE LEFT "VALVE" LIGHT ILLUMINATED & REMAINED, THERE WAS NO N1 OR N2 ROTATION.(<P>VERIFIED CB'S K3 & K4 WERE OPEN, CLOSED CB'S IAW DDG PROCEDURES 75-24-01. PERFORMED DRY MOTOR RUN ON ENG 1 & ENG 2Mar 27, 2020 · N1373A · Boeing 76731KSDR ASAA2020040632620Valve · failedGE DIAGNOSTICS REPORTS THE #2 ENGINE TREND DATA SHOWS A SUDDEN SHIFT IN DEGT, D CORE AND DFFHPTACCV IS MOST LIKELY CAUSE OF SHIFT(#PRI: 2) ETOPS SIGNIFICANT SYSTEM CNR ISSUED. GROUNDED - YES. REPLACED HPTACCV ON THE #2 ENGING. REF B737-800 AMM 75-21-01 ACTUATOMar 24, 2020 · N569AS · Boeing 737890SDR UIEA2020032600559Relay · failedR IDG VALVE STATUS MSG.(<P>OK TO DEFER IAW DDG 75-21-01-03A MDDR 126212, CAT C, DUE 03APR20, MAINTENANCE PROCEDURES COMPLIED WITH, PLACARD INSTALLED. DISPATCH: YK @ 15:00Z.</P><P>LOG PAGE 1119994: T/S PER FIM 24-20 FT 802, REMOVED AND REPLACED RELAY K1032. RANMar 24, 2020 · N662GT · Boeing 76731ASDR ASAA2020032032509Control Valve · leakingFUEL LEAK OUT OF #1 ENGINE WITH FUEL PUMPS ON. GROUNDED - YES. REMOVED AND REPLACED ACTIVE CLEARANCE CONTROL VALVE IAW BOEING B737-800 AMM 75-22-04. ENGINE RUN AND OPS CHECK GOOD, NO DEFECTS NOTED.Mar 20, 2020 · N565AS · Boeing 737890SDR CALA2020032000631Gasket · looseITEM FROM TEST FLIGHT ON CLIMBOUT PASSING 6000 THE NO.2 ENGINE OVERHEAT LIGHT ILLUMINATED NO EGT OVERTEMP INDICATION BRINING THROTTLE BACK TO IDLE CAUSED LIGHT TO GO OUT REF AAR N/R 99863917 REMOVED AND REPLACED GASKET AT STAGE 9 INLET TUBE HPT SIDE AND PERFORMar 10, 2020 · N35236 · Boeing 737824SDR AALA202003069010Bolt · missingAIRCRAFT WAS GROUNDED: ENGINE #1 OVERHEAT LIGHT ILLUMINATED DURING CLIMB. FLIGHT CREW REDUCED PWER SETTING ON #1 ENGINE AND NOTED THE LIGHT WENT OUT AT HALF THROTTLE. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO PHX WHERE IT LANDED SAFELY WITH NO FURMar 4, 2020 · N981AN · Boeing 737823SDR ASAA2020030932395Warning System · activatedDURING TASK CARD 78273000 FOUND FAULT 75-30412 THE HPTACC POSITION SIGNALS DISAGREE ECONOMIC FAULT DEFERRED PER TASK CARD 78273000. GROUNDED - YES. DEFERRED PER T/C 78273000 WITHIN 500 HRS. RECHECK ACCOMPLISHED PER T/C 78273000, #2 ENG S/N: 896459 STILL SHOWINMar 3, 2020 · N586AS · Boeing 737890SDR ASAA2020022643276Manifold · wornWHILE ACCOMP T/C 7472000 FOUND TURBINE COOLING AIR DUCT WITH HEAVY CONTACT WEAR. ENG 3 O'CLOCK POSN (ALF) AT "Y" #2 ENG S/N 804685. GROUNDED - YES. REMOVED & REPLACED #2 ENG LPTACC COOLING AIR MANIFOLD REF CFM ESM 72-00-00. CLEARANCE CHECKED GOOD.Feb 24, 2020 · N534AS · Boeing 737890SDR ASAA2020013073989Valve · leakingDURING WALK AROUND, FOUND THE NR 2 ENGINE LEAKING FUEL, AROUND 80 DROPS PER MINUTE. GROUNDED - YES. REMOVED AND REPLACED THE NR 2 ENGINE HPTACC VALVE IAW AMM 75-21-01. LEAK AND OPS CHECKED GOOD.Jan 27, 2020 · N468AS · Boeing 737990ERSDR ASAA2020012131921Valve · faultedGE REPORTS #1 ENGINE TREND DATA SHOW GRADUAL INCREASE IN DELTA EGT AND FUEL FLOW AND A DECREASE IN DELTA CORE SPEED.(#PRI2) ETOPS SIG. GROUNDED - YES. REMOVED AND REPLACED HPTACC VALVE PER B737-900 AMM 75-21-01. LEAK CHCK AND OPS TEST NORMAL.Jan 21, 2020 · N596AS · Boeing 737890SDR ASAA2020010631794Control Valve · leaking#2 ENGINE S/N 962514 HAS HISTORY OF FUEL LEAKAGE. GROUNDED - YES. REMOVED ENG #2 HPTACC VALVE PER B737-900 AMM 75-21-01-000-801-F00. INSTALLED NEW HPTACC #2 ENG. REF AMM 75-21-01-400-801-F00. LEAK CHECK AND ACTUATOR TEST PASSED.Jan 3, 2020 · N407AS · Boeing 737990ERSDR ASAA2020012231930Valve · faulted#2 ENG BITE HAS FAULT 75-20462 THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. ECONOMIC FAULT. DEFERRED PER T/C 78273000. GROUNDED - YES. REQUIRES T515 HPTC VALVE POSITION TRANSDUCER (HPTACC). REMOVED AND REPLACED #2 ENG. HPTACC REF. B737-900 AMM BOEING 75-21Dec 13, 2019 · N419AS · Boeing 737990ERSDR ASAA2019102931182Bleed Valve · leakingDURING PDC DURING AROUND, FOUND #2 ENG TBV DRAIN LINE LEAK WITH 1 DROP PER MINUTE. GROUNDED - YES. REMOVED AND REPLACED #2 TBV PER B737-900 AMM 75-23-01-400-801-F00. PERFORMED TEST LISTED. NO LEAKS FOUND. NO DEFECTS NOTED.Oct 29, 2019 · N448AS · Boeing 737990ERSDR ASAA2019090830630Drain Valve · leakingRAMP REPORTS FUEL SPRAY FROM #2 ENG ON START. GROUNDED - YES. FOUND HPTACC VALVE DRAIN DRIPPING 8 DROPS PER MINUTE STATIC. NO LEAKS OR DRIPS DURING OR AFTER START, REF AMM 71-71-00. WITHIN DEFERRABLE LIMITS. HPTACCV TO BE REPLACED WITHIN 25 FLIGHT CYCLES. REMOSep 8, 2019 · N558AS · Boeing 737890SDR ASAA2019090730633Tube · damagedWHILE WORKING ON T/C N8420001, FOUND HPTACC STAGE 9 INLET TUBE DAMAGED BY J9 BRAIDED SHIELD AT CJ9 DISCONNECT. GROUNDED - YES. REPLACED #2 ENG HPTACC INLET TUBE REF AMM 75-21-01-400-801-F00 STEPS 3G (5)-3G (6).Sep 7, 2019 · N514AS · Boeing 737890SDR ASAA2019090230608Valve · leaking#2 ENG HAS A LEAK COMING OUT OF THE DRAINS. GROUNDED - YES. FOUND #2 ENG HPTACC VALVE DRAIN LEAKING ONE DROP EVERY 4 SECONDS. REMOVED #2 ENG HPTACC REF AMM 75-21-01-000-801-F00. INSTALL #2 ENGINE HPTACC VALVE REF AMM 75-21-01-400-801-F00. STEPS 3. A-G (4) (A);Sep 2, 2019 · N457AS · Boeing 737990ERSDR ASAA2019082430523Valve · leakingDURING PDC WALK AROUND FOUND #2 ENGINE LEAKING FUEL. FOUND HPTACCV LEAKING 15 DROPS A MINUTE. PERFORMED #2 ENGINE IDLE RUN FOR 5 MINUTES. NO LEAK FOUND AFTER ENGINE RUN. GROUNDED - YES. REMOVED AND REPLACED HPTACC VALVE ON #2 ENG REF B737-800 AMM 75-21-01. ALLAug 24, 2019 · N538AS · Boeing 737890SDR ASAA2019082030923Valve · out of toleranceWHILE ACCOMPLISHING TASK CARD 782730, INTERROGATE THE FMC CDU. MAINT MESSAGE: 75-10592. "THE TBV POSITION SIGNAL IS OUT OF RANGE" LONG TIME FAULT. #2 ENG. GROUNDED - YES. ENG #2 FAULT 75-10592 IS LONG TIME FAULT. TO BE REPAIRED W/IN 450 FLT HRS. DEFERRED PER TAug 20, 2019 · N590AS · Boeing 737890SDR UIEA2019081505180Tube · cracked#1 ENGINE TURBINE COOLING AIR TUBE CRACKED AT 8:30 POSITION.(<P>REMOVED AND REPLACED #1 ENG TURBINE COOLING AIR MANIFOLD @ 8:30 POSITION IAW AMM 75-24-03. AS# 0018938, AS# 0013164, AS# 0019069.</P>)Aug 14, 2019 · N1427A · Boeing 767306SDR ASAA2019071030014Warning System · activatedENGINE 2 HP TIP CTL FAULT MESSAGE OPENED, THEN CLOSED ON CLIMB. GROUNDED - YES. PERFORMED TSM TASK 75-31-00-710-081-A STEPS 4.B (1) (A) (B) (C) AND 4.B (2) (A) (B) (C), CLEANED BOTH RECETACLES. NO HELP. VERIFIED FAULT, RELEASED PER MEL 75-21-01, ACCOMPLISHED MJul 10, 2019 · N928VA · Airbus A321253NSDR AALA201907119006Cooling Duct · leakingAIRCRAFT WAS GROUNDED: PILOT REPORTS 15 MIN AFTER TAKEOFF PASSING FL200 RT ENGINE OVERHEAT LIGHT ILLUMINATED. REDUCED ENGINE TO IDLE, LIGHT EXTINGUISHED. EMERGENCY DECLARED, RETURNED TO DFW. MAINTENANCE TROUBLESHOT IAW FIM 26-10-00-810-811 AND FOUND LEAK ON HJul 10, 2019 · N907AN · Boeing 737823SDR 2019FA0000223Cooling Fan · crackedCLUTCH LIGHT WAS FLICKERING. WE HAD ONE OF THE COLUMN SPRINGS DE-TENSION WHILE WE WERE PERFORMING SHEAVE ALIGNMENT AND CLUTCH SHAFT ANGLE. TALKED TO RHC TECH SUPPORT, THEY THOUGHT IT MIGHT BE THE CLUTCH COLUMN SPRINGS OUT OF CALIBRATION. WE REMOVED THE COOLINGJul 10, 2019 · N3070S · Robsin R22BETAIISDR ASAA2019070629932Unknown · malfunctionedENGINE 2 HP TIP CONTROL FAULT. GROUNDED - YES. ACCOMPLISHED TSM 75-22-810-819A FAULT OF THE LPTCC VALVE (POSITION FAILED OPEN) #2 ENGINE. OPERATIONAL ENGINE IDLE TEST ON CHANNEL A AMM 75-22-810-819A. TEST SHOWED NO FAULTS AND NO MX ACTION REQUIRED.Jul 6, 2019 · N928VA · Airbus A321253NSDR ASAA2019061129688Valve · failedDURING CLIMB OUT, ECAM ENGINE 1 HP TIP CONTROL FAULT RECCURING HAD TO ENGINE CANCEL. GROUNDED - YES. REMOVED AND REPLACED ENGINE 1 LPTACC VALVE FIN 4186KS . REF AMM 75-22-05PB401 PERFORMED IDLE TEST (MENU MODE) REF 73-29-00-740-803-A . TEST OK. ACCOMPLISHEDJun 11, 2019 · N921VA · Airbus A321253NSDR ASAA2019051429348Valve · leakingDURING ETOPS PDC FOUND NR 2 ENGINE DRIPPING FUEL FROM DRAIN SHROUD AREA. GROUNDED - YES. REMOVED AND REPLACED (HPTACC) VALVE ON NR 2 ENGINE REF AMM 75-21-01. OP CHECK. GOOD NO LEAKS FOUND. THIS CLEARS PLT. AC RETURNED TO NORMAL CONFIG.May 14, 2019 · N469AS · Boeing 737990ERSDR ASAA2019051329717Valve · out of limitsFOUND #2 ENGINE MAINT MSG 75-10592, THE TBV POSITION SIGNAL IS OUT OF RANGE. LONG TIME FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. DEFERRED PER T/C 78273000. PLT DEFERRAL FOR 450 FLT HRS. ACCOMPLISHED B737-800 FIM 75-23 TASK 802. ACTUATORS TEST PASSES. FAMay 13, 2019 · N590AS · Boeing 737890SDR UIEA2019051204172Valve · malfunctionedON SHUTDOWN LEFT IDG VALVE STATUS MESSAGE (<P> TRANSFERRED TO MDDR 111509 CAT "C" IAW ATLAS MEL 75-21-01-03A. MAINTENANCE PROCEDURES C/W.</P><P>REMOVED AND REPLACED COOLER VALVE IAW AMM 24-11-12 </P>)May 12, 2019 · N662GT · Boeing 76731ASDR UIEA2019051304180Fastener · missingNR 1 ENGINE AFT O/B COOLING DUCT, 7 O'CLOCK POSITION, MISSING HARDWARE. (<P>INSTALLED NEW HARDWARE AT NR 1 ENGINE AFT O/B COOLING DUCT, 7 O'CLOCK POSITION IAW AMM 75-24-03. </P>)May 11, 2019 · N1373A · Boeing 76731KSDR UIEA2019051304181Cooling Duct · chafedNR 1 ENGINE LT SIDE, 7 O'CLOCK POSITION, COOLING DUCT CHAFFED FROM CORE COWL.(<P>REMOVED AND REPLACED NR 1 ENGINE AFT RECOUP DUCT AT 7 O'CLOCK POSITION IAW AMM 75-24-03.</P>)May 11, 2019 · N1373A · Boeing 76731KSDR UIEA2019051304189Cooling Duct · chafedNR 1 ENGINE, LT SIDE, 8 O'CLOCK POSITION, COOLING DUCT CHAFFED FROM CORE COWL(<P>REMOVED AND REPLACED DUCT ASSEMBLY IAW AMM 75-24-03</P>)May 11, 2019 · N1373A · Boeing 76731KSDR UIEA2019051304199Cooling Duct · chafedNR 1 ENG AFT LT SIDE ROUND COOLING DUCT AT 7 O'CLOCK POS IS CHAFFED(<P>REMOVED AND REPLACED COOLING DUCT AT 7 O'CLOCK POSITION IN NR 1 ENG IAW AMM 75-24-03</P>)May 11, 2019 · N1373A · Boeing 76731KSDR ASAA2019042929175Valve · leakingON START #2 ENGINE GRD CREW OBSERVED A LIQUID DRIPPING FROM THE LOWER PORTION #2 ENGINE. GROUNDED - YES. #2 ENG HPTACC VALVE LEAKING FROM DRAIN. R&R HPTACC VALVE IAW B737-900 AMM 75-21-01, PERFORMED ACTUATOR TEST AMM 71-00-00-700-007-F00 AND IDLE POWER LEAK CHApr 25, 2019 · N419AS · Boeing 737990ERSDR HALA2019041100185Warning Message · false indicationETOPS SIGNIFICANT SYSTEM - ENG 2 AIR SYSTEM FAULT ON APPROACH. // PERFORMED BITE TEST ON EEC 1 & 2, NO FAULTS NOTED. DID A HISTORY SEARCH ON THIS FAULT AND NONE WERE FOUND PREVIOUS OF THIS ONE. WILL CONTINUE MONITORING AS REQUIRED PER TSM 75-26-00-810-819-A. Apr 10, 2019 · N213HA · Airbus A321271NSDR E07A201912020011Precooler · crackedCRACKED LH PRECOOLER INLET DIVERTER WELDS FOUND DURING INSPECTION IAW SERVICE LETTER 505-36-0003. REPLACED WITH OVERHAULED UNIT.Apr 2, 2019 · N346AS · Emb EMB505SDR ASAA2019033128838Valve · out of tolerance#2 ENGINE SHOWS FAULT CODE 75-10592- TBV POSITION SIGNAL IS OUT OF RANGE. LONG TIME FAULT REF T/C 78273000. GROUNDED - YES. REF B737-800 FIM 75-23 TASK 802. F/C 75-10592 ACTIVE. TBV DATA SHOWS DEMAND AT 100%. POSITION AT 6%. FADEC 3 S/W. PERFORMED GVI OF J9/J1Mar 31, 2019 · N590AS · Boeing 737890
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