N491AS

Service difficulty reports · 192

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. 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 n_number = 'N491AS' AND registry_match = 'registration'
  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 ASAA2022120641034Spacer · debondedWHILE ACCOMPLISHING FAN LUBE TASK CARD, NR 1 ENGINE, SPACERS AT POSITION 5 AND 24 ELASTOMER STRIPS UNBONDED. GROUNDED - YES. REPLACED SPACERS IAW T/C 78472010.Dec 6, 2022 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022111040740Fmc · faultedDURING CRUISE WITH CMD B ENGAGED, LNAV/VNAV DROPPED OFF BUT AUTOPILOT STAYED ENGAGED. SWITCHED TO CMD A, RE-ENGAGED LNAV/VNAV, NO ISSUES. GROUNDED - YES. REF B737-900 FIM 22-11 TASK 801, DFCS BITE FAUL HISTORY LOGGED CHB MSG "FMC DATA INV/NO FMC DATA" ON PREV Nov 10, 2022 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022110343700Gasket · loose#2 ENG S/N 862674 DURING VBV RING GUIDE INSPECTION, ALL 4 PADS FOUND LOOSE. GROUNDED - YES. ON DEFERRAL. REMOVED THE LOOSE VBV RING GUIDE PADS FROM THE #2 ENG. PADS REQ REPLACEMENT AT NEXT ENGINE SHOP VISIT, REF AMM 75-32-00-200-801-F00. MX DEFERRED, C/N 0302Nov 3, 2022 · N491AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022103040566Pad · debondedDURING ASA T/C 78273000, FOUND ENG #2 FAULT CODE 75-30452 THE VBV POSITION SIGNALS DISAGREE SHORT TIME FAULT. GROUNDED - YES. REF B737-900 FIM 75-32 TASK 803, NO FAULTS FOUND DURING INITIAL EVALUATION. DURING INSPECTION OF THE #2 ENG VBV RING GUIDE PADS, ALL 4Oct 30, 2022 · N491AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022091539972Autopilot Sys · disengagedAPPROACH WARNING ON PRACTICE HGS APPROACH, RWY 16R AUTOPILOT DISENGAGE @ 15'. GROUNDED - YES. ACCOMPLISHED HGS SYSTEM TEST ROCKWELL COLLINS HGS 4000 SMM 34-36-00. DFCS LAND VERIFY TEST IAW B737-900 AMM 22-11-00 OPS CK NORMAL.Sep 15, 2022 · N491AS · Boeing 737990ER · Autopilot SystemSDR ASAA2022082739685Tat Probe · faultyTEMP PROBE CAUTION LIGHT ILLUMINATED IN FLIGHT. GROUNDED - YES. REMOVED AND REPLACED TAT PROBE REF B737-900 AMM 34-21-06.Aug 27, 2022 · N491AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2022081239486Control Valve · faultyLEFT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. LIGHT EXTINGUISHES ON RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK TEMP CONTROL VALVE REF B737-900 AMM 21-51-10.Aug 12, 2022 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022080239475Control Valve · faultyNGS BLUE LIGHT. GROUNDED - YES. REMOVED AND REPLACED L/H PACK FLOW CONTROL AND SHUTOFF VALVE REF B737-900 AMM 21-51-01.Aug 2, 2022 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022071739127Controller · faultyL PACK LIGHT ILLUMINATED ON MASTER RECALL. GROUNDED - YES. REL PER MEL 21-32B. LEFT PACK TEMP CONTROL ZONE CONTROLLER INOP, TCV ILLUMINATED ON LH PACK CONTROLLER, PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST PER B737-900 AMM 21-61-00-700-806-002, GREEN "GO" LJul 17, 2022 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022070338952Modulating Valve · faultyLEFT PACK LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED A PACK/ZONE TEMPERATURE CONTROLLER #1 BITE REF B737-900 AMM 21-61-00-700-806-002. "THIS PACK TCV" FAULT ILLUMINATED. REQUIRES REPLACEMENT OF LEFT TCV V139. PARTS REQUIREMENT UPDATED. REMOVED AND REPLAJul 3, 2022 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022053038468Insert · defectiveREF TC 78472000, DURING INSPECTION FOUND ONE LOOSE FASTENER ON #1 ENG, #5 FAN DUCT PANEL (WITH LPTACC SCOOP) GROUNDED - YES. REMOVED #1 ENG #5 FAN DUCT PANEL PER B737-900 AMM 72-23-07. REMOVED MID O/B INSERT AND INSTALLED NEW PER CFM SOPM 70-42-13. INSTALLED #May 30, 2022 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022041738065Unknown · damagedDURING T/C N8420001 FOUND OUTER JACKET OF HARNESS MW0315 DAMAGED ON #2 ENGINE, R/H SIDE OF CORE SECTION OF ENGINE. GROUNDED - YES. TEMPORARILY REPAIRED #2 ENGINE HARNESS MW0315 ON R/H SIDE OF CORE SECTION LOCATED ABOUT 8-10 INCHES FROM MW0325 HARNESS CANNON PLApr 17, 2022 · N491AS · Boeing 737 · Detection SystemSDR ASAA2022040737938Unknown · unknownIN STABLE LEVEL FLIGHT AT FL340, EXPERIENCED BRIEF RIGHT FMC FAILURE. SYSTEM RECOVERED ON ITS OWN. GROUNDED - YES. PERFORMED MAINTENANCE BITE TEST ON FMCS, NO MAINTENANCE MESSAGES PRESENT.Apr 7, 2022 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022011037111Unknown · unknownAUTO THROTTLE FAILED ON TAKEOFF. GROUNDED - YES. FOUND MULTIPLE HITS FOR MAINT MSG 22-31501 ON A/T BITE LEG 1 (ASM-1) REF B737-900 FIM 22-31 TASK 801. CYCLED A/T C/B 918-1 E1 PERFORMED SERVO MOTOR TEST REF FIM 22-31 TASK 822 INIT EBAL. NO FAULTS TEST GOOD. CURJan 10, 2022 · N491AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2021122837024None · none5 MINUTES AFTER TAKEOFF R SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. PER QRH TURNED OFF FOR 5 MINUTES, THEN BACK ON . OVERHEAT LIGHT ILLUMINATED AGAIN. GROUNDED - YES. PERFORMED B737-900 AMM 56-12-11-400-801 STEP 3.F.6-7, NEWLY INSTALLED WINDOW CODE H16, MOVED TADec 28, 2021 · N491AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2021100236148None · detachedL2 EXIT SIGN COVER MISSING. GROUNDED - YES. VERIFIED FAULT, FOUND L2 EXIT ASSEMBLY DAMAGED. REPLACED LIGHT ASSEMBLY WITH NEW ONE. ACCOMP LIGHTS TEST, TEST PASS REF B737-900 AMM 33-51-01-960-002.Oct 2, 2021 · N491AS · Boeing 737990ER · Emergency LightingSDR ASAA2021090535875Eec · inoperative#2 EEC BITE TEST INOP. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE EEC REF B737-900 AMM 73-21-60-400-801-F00. ALL TEST PASS REF AMM 71-00-00-800-811-F00. ETOPS GROUND VERIFICATION GOOD. 4 C/B'S PULLED AND RESET. REMOVED AND REPLACED MW 0303 HARNESS. REF AMMSep 5, 2021 · N491AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2021090235852Electronic Unit · failedAUTO THROTTLE WILL NOT ARM. GROUNDED - YES. FOUND EEC FAILURE DURING BITE. REF LOGPAGE 60212447 FOR EEC REPLACEMENT. PERFORMED REPAIR CONFIRMATION REF B737-900 AMM 22-31 TASK 801. ETOPS GROUND VERIFICATION GOOD.Sep 2, 2021 · N491AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2021071535417Modulating Valve · faultedZONE TEMP ILLUMINATES ON RECALL. GROUNDED - YES. REMOVED AND REPLACED TRIM AIR MODULATING VALVE (CONTROL COMPARTMENT) PER B737-900 AMM 21-61-21. NO LEAKS NOTED AT THIS TIME. THIS CLEARS MEL 21-21G REMOVED INOP PLACARD SEAMC MARK CONTACTED. ZONE TEMP DOES NOT IJul 15, 2021 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021071335380Hmu · faultyENG #2 OVERTEMP ON STARTUP, RED BOX ILLUMINATED ABORTED START. GROUNDED - YES. REF LOG 60230329 FOR ENG INSP. AFTER ENG OPERATION ABOVE THE LIMITS AND HIGH STRESS . NO DEFECTS NOTED. ACCOMP B737-900 FIM 80-05 TASK 807 STEPS A THROUGH E , NO FAULTS FOUND . ACCOJul 13, 2021 · N491AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2021062235294Transition Panel · corrodedAFT CARGO COMPARTMENT R/H FLOOR TRANSITION PANEL IS PUNCTURED AND GOUGED BETWEEN STA 727J AND 727KDOT:S245. GROUNDED - YES. EVALUATED AFT PIT RH TRANSITION PANEL BETWEEN STA 727J & 727K : ORIGINAL MAT .040" MATERIAL LOSS .040", NO MATERIAL REMAINING . OUT OF LJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021062235293Floorbeam · corrodedAFT PASSENGER WET AREA HAS PITTING CORROSION ON STRUCTURE BEAM STA 947 UNDER LAV E FLOOR PANEL CIRCLE IN RED AND STREAMER ATTACHED.DOT A763. GROUNDED - YES. REMOVED CORROSION FROM THE UPPER SURFACE OF THE TRANSVERSE FLOOR BEAM IN THE AFT WET AREA IN THE MAIN CJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Main, Floor BeamSDR ASAA2021062235292Floor Panel · damagedMAIN CABIN FLOOR PANEL AT FWD GALLEY P/N 141A5810-769 AFT INBD LOWER SURFACE IS DAMAGED (MARKED).DOT S684. GROUNDED - YES. REPAIRED MAIN CABIN FLOOR PANEL P/N 141A5810-769 BY REMOVING DAMAGED AREA OF LOWER SKIN AND BONDING FIBERGLASS WET LAY UP REPAIR IAW B737Jun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Floor PanelSDR ASAA2021062235291Floor Panel · damagedMAIN CABIN FLOOR PANEL AT L1 ENTRY AREA P/N 141A5810-181 FWD OUTBD CORNER IS BROKEN ( MARKED)DOT S683. GROUNDED - YES. REPAIRED MAIN CABIN FLOOR PANEL AT L1 ENTRY AREA P/N 141A5810-181 FWD O/B CORNER BROKEN IAW B737-900ER SRM 53-00-50-2R-0 & 53-00-50-2R-6REMOVJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Floor PanelSDR ASAA2021062235290Floor Panel · damagedMAIN CABIN FLOOR PANEL AT FWD LAV P/N 14A5810-729 AFT OUTBD CORNER IS BROKEN (MARKED).DOT:S682. GROUNDED - YES. REPAIRED MAIN CABIN FLOOR PANEL AT FWD LAV P/N 141A5810-729 AFT O/B CORNER BROKEN IAW B737-900ER SRM 53-00-50-2R-0, 53-00-50-2R-1 & 53-00-50-2R-6. RJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Floor PanelSDR ASAA2021062235289Transition Panel · corrodedFORWARD CARGO PIT TRANSITION PLN R/H STATION 500H TO 500I HAS SEVERAL AREAS OF MINOR CORROSION DOT:A262. GROUNDED - YES. EVALUATED FWD CARGO R/H TRANSITION PNL @ STA 500H TO 500I ORIGINAL MAT'L THK'S .040 REMOVED .012 MATERIAL, :028 REMAINING FOUND TO BE OUT OJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021062235268Angle · corrodedFORWARD CARGO PIT AFT BULKHEAD STATION 500L FROM TRANSITION PLN LEFT TO RIGHT AND ON UP RITE STRUCTURE HAS EXFOLIATED CORROSION. GROUNDED - YES. FOUND R/H AND BOTTOM BULKHEAD ANGLES AT STATION 500L TO BE OUT OF LIMITS DO TO NO LIMITS GIVEN. REMOVED AND REPLACEJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021062235265Transition Panel · corrodedAFT CARGO COMPARTMENT R/H FLOOR TRANSITION PANEL HAS MULTIPLE SPOTS OF LIGHT SURFACE CORROSION ON THE UPPER SURFACE BETWEEN APPROX 13" FWD OF STA 727J AND STA 767 (MARKED)DOT: S244. GROUNDED - YES. EVALUATED RH AFT PIT TRANSITION PANEL 13" FWD OF STA 727J TO SJun 22, 2021 · N491AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021061835264Floor Panel · damagedAFT WET AREA CABIN FLOOR PANEL PN:147A5810-477 HAS SURFACE DAMAGE, AND A MISSING INSERT. GROUNDED - YES. REPAIRED FLOOR PANEL P/N 147A5810-477 IAW B737-900ER SRM 53-00-50-2R-1 & 53-00-50-2R-0.Jun 18, 2021 · N491AS · Boeing 737990ER · Fuselage Floor PanelSDR ASAA2021052834987Actuator · faultedMAINT MSG FAULT CODE 75-30401 THE VSV POSITION SIGNAL DISAGREE SHORT TIME FAULT DEFERRED PER TASK # 78273000. GROUNDED - YES. REMOVED AND REPLACED #1 ENG RH VSV ACTUATOR PER B737-900 AMM 75-31-01/401. LEAK & OPS CK GOOD NO DEFECTS NOTED.May 28, 2021 · N491AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2021042334676Eec · faultedREF T/C 78273000, #1 ENG FAULT MSGS 75-30401 (THE VSV POSITION SIGNALS DISAGREE), 75-10391 (THE VSV POSITION SIGNAL IS OUT OF RANGE), 75-10401 VSV POSITION SIGNALS DISAGREE AND 75-20401 (VSV POSITION SIGNALS DISAGREE) GROUNDED - YES. REPLACED ENGINE 1 EEC. ACCApr 23, 2021 · N491AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2021041634599Fmc · failedLEFT FMC FAILED MOMENTARILY ON CLIMBOUT. NORMAL OPERATION RESTORED IN APPROXIMATELY 60 SECONDS. NOTE. VTK AND MAP DISPLAYED ON CAPTAIN'S NAV DISPLAY. GROUNDED - YES. REF B737-900 FIM 34-61 TASK 801 OPS RESTORED OK FOR SERVICE.Apr 16, 2021 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2021041034540Fmc · failedLEFT FMC FAILED MOMENTARILY AT CRUISE ALTITUDE OPERATION RESTORED IN APPROXIMATELY 30-60 SECONDS. GROUNDED - YES. ACCOMPLISHED FMC BITE, PRES POS LAT RATE FAULT ON LAST LEG LOGGED. ACCOMPLISHED B737-900 FIM 34-61 TASK 824 BOTH ADIRUS NO CURRENT FAULTS AND NO FApr 10, 2021 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2021030934268Valve · faultedWHILE ACCOMPLISHING #1 PZTC BITE FOUND ZONE TRIM VALVE FAULT ON VERIFY. GROUNDED - YES. NO CURRENT FAULTS IN BACK SYSTEM. BITE CHECK RESET PROCEDURE CLEARED FAULT PER B737-900 AMM 21-51-00-700-803 AC OK FOR SERVICE.Mar 9, 2021 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021010833846Modulating Valve · faultedRIGHT PACK LIGHT ILLUMINATES ON RECALL. GROUNDED-YES. RT ZONE TEMP CONTROLLER LOGGED TCV FAULT. REMOVED AND REPLACED RT PACK TEMP CONTROL VALVE, REF B737-900 AMM 21-51-10. OPERATIONS CHECK GOOD. LEAK CHECK GOOD.Jan 8, 2021 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020121533695Wire Harness · chafedNR 2 ENGINE FIRE DETECTION WILL NOT TEST IN NORMAL POSITION. WHEN SELECTED TO B LOOP LIGHT REMAINS ON AND WARNING HORN REMAINS ON. A LOOP OPERATIONS NORMAL. GROUNDED-YES. ACCOMPLISHED T/S, PER B737-900 FIM 26-10 TASK 811 - REFERENCE B737-900 IPC 26-11-02-0Dec 15, 2020 · N491AS · Boeing 737990ER · Fire Protection System WiringSDR ASAA2020112633602Autoland Sys · malfunctionedAUTO LAND/HGS UNSUCCESSFUL APPROACH WARNING AT 30' AGL AIRPLANE DID NOT FLARE. GROUNDED-YES. ACCOMPLISHED ALL LLM SPECIAL CONDITION TESTS, PER B737-900 AMM 22-00-01-730-807, LAND VERIFY SUCCESSFUL.Nov 26, 2020 · N491AS · Boeing 737990ER · Autopilot SystemSDR ASAA2020103133456Fmc · malfunctionedDURING CRUISE AT 360 NEAR MISSULA MT FMC'S BLANKED A/P REVERTED TO CWS P/R MAGENTA LINE ON ND BLANKED A/P DID NOT DISENGAGE. ENTIRE EPISODE LASTED APPROX 2 MIN. GROUNDED-YES. LT FMC 4 INFLIGHT FAULTS, SYSTEM OPERATIONS OK.Oct 31, 2020 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020103033453Power Supply · inoperativeL2 DOOR EMERGENCY LIGHT INOPERABLE. GROUNDED-YES. RELAMPED LIGHT AT L2 DOOR EXTERIOR LIGHT. NO HELP, CHECKED FOR VOLTAGE AT LIGHT ASSEMBLY WITH NO VOLTAGE FINDINGS. REPLACED LT AFT GALLEY POWER SUPPLY AND BATTERY, REF B737-900 AMM 33-51-06. L2 DOOR EXTERIOct 30, 2020 · N491AS · Boeing 737990ER · Emergency LightingSDR ASAA2020102633418Door · out of rigON LANDING FWD ENTRY DOOR LIGHT ILLUMINATED. F/A REPORTED DOOR HANDLE WENT TO OPEN ON LANDING. GROUNDED-YES. ADJUSTED RIGGING OF L-1 DOOR, REF B737-900 AMM 52-11-820-801 STEPS 2.H, I, K, P, R & U. D. ALSO ACCOMPLISHED SOFT UNLATCHING CHECK AND RIG, REF AMMOct 26, 2020 · N491AS · Boeing 737990ER · Passenger/Crew DoorsSDR ASAA2020101733364Charger · inoperativeAFTER LANDING ELEC ANNUNCIATOR ILLUMINATED AND REMAINED ON. GROUNDED-YES. P5-13 BITE SHOWS BATTERY CHARGER FAULT VERIFIED MAIN BATTERY CHARGER INOPERABLE (NO LIGHT). REPLACED M5 MATTERY CHARGER, REF B737-900 AMM 24-31-21.Oct 17, 2020 · N491AS · Boeing 737990ER · Battery/Charger SystemSDR ASAA2020092133215Control Valve · faultedCONT CAB ZONE TEMP ILLUMINATES DURING MASTER CAUTION RECALL, EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED-YES. ACCOMPLISHED BITE CHECK OF NR 2 ZONE TEMP CONTROLLER, SHOWS FAULT TCV, REF B737-800 AMM 21-61-21/401. REMOVED AND REPLACED FLIGHT DECK PRIMARYSep 21, 2020 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020091413166Stabilizer · unknownUNCOMMANDED STAB TRIM MOVEMENT BELOW 500' DURING APPROACH. STABILIZER BEGAN TO MOVE ON ITS OWN WHILE CONFIGURED AND ON SPEED/PATH. TRIM WHEEL MADE TWO TO TWO AND A HALF ROTATIONS NOSE DOWN. STAB TRIM MOVEMENT WAS STOPPED WITH OPPOSING TRIM INPUT FROM FO'S YSep 11, 2020 · N491AS · Boeing 737990ER · Stabilizer Control SystemSDR ASAA2020082863099Panel · damagedENG NR 2 ESN 862674 WORKING ON TC 78472000, INLET & FAN BLADE INSPECTION. FOUND ONE LOOVER FASTENER AFT SIDE PULLED THRU, LOCATED AT TOP SIDE OF THE OUTBOARD FAN FRAME STRUT. GROUNDED - YES. REMOVED & REPLACED FAN DUCT PANEL AT 2 O'CLOCK POSITION ON NR 2 ENGAug 26, 2020 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2020080652993Spacer · debondedNR 1 ENGINE FAN BLADE SPACERS NUMBERS 3, 4, & 23 DEBONDED. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENG FAN BLADE SPACERS.Aug 5, 2020 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2020080652990Platform · corroded#1 ENG FAN BLADE PLATFORMS NUMBERS 3, 8, 14, 15, 17, 22, & 24 HAD CORROSION. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENGINE FAN BLADE PLATFORMS.Aug 5, 2020 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2020062542834Warning Message · false activationRIGHT PACK LIGHT ILLUMINATED DURING PREFLIGHT. GROUNDED - YES. BITE CHECKED BOTH ZONE TEMP CONTROLLERS IAW FIM 21-62 TASK 801. RIGHT FAULTED FOR RIGHT PACK TCV. FAULT RESET. RAN VERIFICATION TEST TWO TIMES WITH NO DEFECTS NOTED.Jun 24, 2020 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020051132716Oil Cooler · leaking#2 ENG IDG AIR/OIL COOLER LEAKING AND IDG OIL LEVEL LOW. GROUNDED - YES. REPLACED THE #2 ENG IDG AIR/OIL COOLER AND SERVICED THE IDG OIL TO FULL. LEAK CHECK GOOD. REF B737-900 AMM 24-11-21/401.May 8, 2020 · N491AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2020022753282Warning Message · false activationAFTER PUSHBACK DOING RECALL CHECK, GOT CONT CAB ZONE TEMP LIGHT. GROUNDED - YES. CLEARED CONT. CABIN TRIM VLV FAULT , ON NO 2 PAC ZONE TEMP CONTROLLER. ACCOMPLISHED BITE TEST PER B737-900 AMM 21-61-00. NO CURRENT FAULTS NOTED . THIS CLEARS MEL 21-21G AND C/N 2Feb 25, 2020 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020012743971Warning Message · false activationDURING CRUISE, AT FL 360, THE FIRST OFFICER`S IN BOUND DU DISPLAYED VTK, BOTH CDUS DISPLAYED SINGLE FMC OPERATION AND LNAV WAS LOST FOR APPROXIMATELY 40 SECONDS. GROUNDED - YES. IAW FIM TASK 34-61-00-810-836, ACCOMPLISHED FMC TEST NO FAIL MESSAGES NOTEDJan 24, 2020 · N491AS · Boeing 737990ER · Flight Management Computing Hardware System
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