N596AS

Service difficulty reports · 549

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 = 'N596AS' 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 ASAA2018102326569Warning System · false activationDUAL VTK AND FMC FAILURE ON LANDING. GROUNDED - YES. BOTH FMC'S LOGGED "GENERAL DATA SYNC ERR" AND "L/R PGM FAULT" LAST FLIGHT. PERFORMED FIM 34-61 TASK 807, OPS NML PER SAME. NO HISTORY LAST 30 DAYS. GRD VERIFICATION NML.Oct 22, 2018 · N596AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2018102326567Unknown · malfunctionedCAPTAINS LEFT SIDE WINDOW OVERHEAT GROUNDED - YES. QRH CHECKLIST COMPLETED, NORMAL OPS.Oct 21, 2018 · N596AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2018102426547Actuator · stuckRIGHT PACK OFF LIGHT IN FLIGHT. RESET MC AND LIGHT WENT OUT. PACK LIGHT COMES BACK ON WITH MC RECALL THEN RESETS OUT. GROUNDED - YES. FOUND RIGHT RAM AIR DOOR INLET ACTUATOR STUCK IN FULL EXTEND POSITION AND CONTINUALLY RUNNING. ACFT RELEASED PER MEL 21-5C. REOct 20, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018101826545Warning System · false activationRIGHT PACK TRIP, CHECKLIST COMPLETE PACK LIGHT ILLUMINATED UPON RECALL. GROUNDED - YES. T/S IAW FIM 21-62 TASK 848. DURING BITE CHECK FOUND RIGHT RAM AIR "ACT" ILLUMINATED. ACCOMPLISHED FIM 21-62 TASK 836. WAS ABLE TO RESET "ACT " FAULT LIGHT. RIGHT PACK OPS COct 18, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018100926422Processor · failed1 HOUR INTO FLT THE NR 1 FUEL TANK READ 950 LBS LESS THAN NR 2 TANK. NR 1 BURN 4.85 NR 2 BURN 4.68. GROUNDED - YES. REMOVED AND REPLACED FQIS PROCESSOR IAW AMM 28-41-81. 3 BREAKERS PULLED AND RESET. OPS CKS GOOD IAW AMM 28-41-00-710-801.Oct 8, 2018 · N596AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2018092326272Compensator · failedNR 1 MAIN FUEL TANK SHOWED A 400 LB READING LESS THAN NR 2 TANK OVER A PERIOD OF 30 MINUTES BOTH TANKS STAYED EVEN WHILE CENTER TANK WAS IN USE. GROUNDED - YES. ACCOMPLISHED TANK AND COMPENSATOR UNITS TEST REF AMM 28-41-21-710-801. FOUND NR 2 MAIN FUEL TANK PRSep 23, 2018 · N596AS · Boeing 737890 · Fuel Quantity SensorSDR ASAA2018092426212Unknown · malfunctionedLANDED WITH FUEL IMBALANCE. PERFORMED FUEL IMBALANCE CHECKLIST IN FLIGHT FUEL FLOW ON NO 1 ENG WAS 500LB PER HOUR HIGHER. ACTUAL SHUTDOWN FUEL WAS 300 LBS ABOVE FLIGHT PLAN FOR 2 HOUR FLIGHT. GROUNDED - YES. ACCOMPLISHED FQIS BITE REFERENCE FIM 28-41 TASK 801.Sep 20, 2018 · N596AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2018091026064Warning System · false activationCAPT'S LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. EXTINGUISHED WHEN RESET. QRH FOLLOWED. GROUNDED - YES. SYS TESTS GOOD PER AMM 30-41-00-710-801. SENSOR FAULTS LOGGED LAST 8 FLTS. SWAPPED TO SPARE SENSOR PRECAUTIONARY. SYS TESTS GOOD.Sep 8, 2018 · N596AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2018091026063Warning System · false activationLEFT SIDE WINDOW OVERHEAT ON CLIMB AT 13K FT RAN QRH LIGHT EXT. GROUNDED - YES. SWITCHED WINDOW HEAT OFF AND WAITED 2-5 MINUTES. LIGHT REMAINED EXTINGUISHED WHEN SWITCHED BACK ON.Sep 6, 2018 · N596AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2018090726043Warning System · false activationON CLIMBOUT, CAPT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. RAN QRH. LIGHT EXTINGUISHED. GROUNDED - YES. CHECKED SYSTEM PER AMM 30-41-00-710-801, OPS CHECK GOOD.Sep 5, 2018 · N596AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2018082765921Drive Unit · vibrationMINOR VIBRATION FELT DURING CRUISE AT FL 360 & FL380, BETWEEN .76M AND .80M. NOT EVALUATED BELOW .76M. NO VIBRATION FELT IN THE YOKE OR RUDDER PEDALS. VIBRATION ONLY FELT WITH RADAR ON. ACFT GROUNDED. PERFORMED GVI OF AIRCRAFT EXTERNAL SIDE, NO DEFECTS NOAug 26, 2018 · N596AS · Boeing 737890 · Weather Radar SystemSDR ASAA201808205844Fmc · malfunctionedSINGLE FMC ON GROUND. ACFT GROUNDED. RAN QRH PROCEDURE, RT SIDE CAME BACK ON.Aug 18, 2018 · N596AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2018080865691Power Supply · inoperativeALL EMERGENCY LIGHTS WITH R1 DOOR WILL NOT COME ON. ACFT GROUNDED. REMOVED AND REPLACED THE POWER SUPPLY, OPS CHECKED GOOD IAW AMM 33-51-06-960-806.Aug 6, 2018 · N596AS · Boeing 737890 · Emergency LightingSDR ASAA2018073125581Baffle · corrodedWHILE REMOVING AFT PIT RT TRANSITION PANEL THE BAFFLE AT STA 747-767 WAS FOUND TO BE CORRODED. GROUNDED - YES. REMOVED AND REPLACED BAFFLE IN AFT PIT IAW SRM 51 40 02 0G 0 W .5" O .032 R .000 L 1.0" D .032.Jul 23, 2018 · N596AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2018081085722Floorbeam · crackedFLOOR SUPPORT BS 540, BL 0 - RBL 16 CRACKED. ACFT GROUNDED. REMOVED AND REPLACED THE FLOOR SUPPORT IAW SRM 51-40-02-0G-0.Jul 18, 2018 · N596AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2018080225617Floorbeam · corrodedCORR ON FLOORBEAM STA 986 RBL 43. GROUNDED - YES. REPAIRED RT SECTION OF FLOORBEAM STA 986, RBL8 TO RBL50, IAW SRM 53 70 51 2R 4 W 1 O .150" R .086" L 2 D .084".Jul 18, 2018 · N596AS · Boeing 737890 · Fuselage Main, Floor BeamSDR ASAA2018080625653Stiffener · crackedBS 727 BULKHEAD STIFFENER FOUND CRACKED IN THE UPPER RADIUS AT RBL 10. ACFT GROUNDED. REMOVED AND REPLACED THE BULKHEAD STIFFENER IAW SRM 51-40-0G0.Jul 17, 2018 · N596AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2018080125596Support · corrodedCORROSION ON TRANSITION SUPPORT WEB RBL 20 STA 794. GROUNDED - YES. REMOVED AND REPLACED TRANSITION SUPPORT WEB IAW SRM 51 40 02 0G 0 W 1" O .050 R .000 L 2.0" D .050.Jul 17, 2018 · N596AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2018080225618Threshold · corrodedCORR ON THRESHOLD OF AFT CARGO DOOR CUTOUT. GROUNDED - YES. REMOVED AND REPLACED WEB IAW SRM 51 40 02 0G 0 W 2" O .050" R .039 L 44." D .011".Jul 15, 2018 · N596AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2018052824832Probe · out of limitsDIAGNOSTICS REPORTS NR 1 ENGINE TREND DATA SHOWS A DELTA EGT INCREASE AND EGTHDM DECREASE. EGT INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. ACCOMPLISHED 78273000, MAINT MESSAGE 77-20871 (T495S4 OUT OF RANGE) ALL LEGS. PRE-CLEAN VALUES: S1 116.22, S2 67.20, SMay 28, 2018 · N596AS · Boeing 737890 · Engine EGT/TIT Indicating SystemSDR ASAA2018042524439Connector · dirtyFOUND NR 2 ENGINE FAULT 77-1085 THE BOTTOM RIGHT EGT SIGNAL (T495S2) IS OUT OF RANGE. ACFT GROUNDED. TROUBLESHOT IAW FIM 77-21 TASK 802. NO FAULTS FOUND. NO FAULTS LAST 10 FLT LEGS. AS PRECAUTIONARY ACCOMPLISHED CONNECTOR CLEANING PER B737-800 AMM TASK 77-Apr 25, 2018 · N596AS · Boeing 737890 · Engine Indicating System WiringSDR ASAA2018033024089Fmc · failedLEFT AND RIGHT FMCS INTERMITTENTLY LOCKING UP. KEYS ON MCDU PAD DON'T WORK, FMC PROMPT AND ICON ON THE L1 ISN'T DISPLAYED AND AMBER VTK WARNING SHOWS INTERMITTENTLY ON CAPTAIN`S ND. ACFT GROUNDED. REMOVED & REPLACED THE NR 1 FMCS IAW AMM 34-61-02. PERFORMar 30, 2018 · N596AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2018031823958Control Valve · faultedON MASTER CAUTION RECALL, MASTER CAUTION, AIR CONDITIONING, AND LEFT PACK LIGHTS ILLUMINATED. LEFT PACK LIGHT EXTINGUISHED ON MASTER CAUTION RESET. ACFT GROUNDED. HAS A HISTORY. NR 1 PACK, TEMP CONTROLLER SHOWS TCV FAULT. RESET FAULT. REMOVED AND REPLACED Mar 18, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018030423732Warning Light · false activationLEFT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. PERFORMED FIM 21-60 TASK 801, ON THE NR 1 AND 2 PACK TEMP CONTROLLERS. NO FAULTS FOUND.Mar 4, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018030223766Egt Indication · false activationWHILE PERFORMING TC 78273000 LEFT ENGINE HAD AN ECONOMIC FAULT MESSAGE, LT 77-10852, THE BOTTOM RIGHT EGT SIGNAL T495S2 IS OUT OF RANGE. ACFT GROUNED. EVALUATION SHOWED NO ACTIVE FAULTS OR ANY FAULTS IN FAULT HISTORY. ALL T49.5 READINGS WITHIN LIMITS. ALL TEMar 2, 2018 · N596AS · Boeing 737890 · Engine EGT/TIT Indicating SystemSDR ASAA2018022823744Valve · failed80KT SLOW SPEED ABORT DUE ILLUMINATION OF RIGHT SIDE BLEED TRIP OFF LIGHT. ACFT GROUNDED. ACCOMPLISHED FIM 36-10 TASK 801. REMOVED AND REPLACED RT HIGH STAGE VALVE IAW AMM 36-11-06-000-801. BOTH OPS CHECKED GOOD AND GROUND VERIFICATION GOOD.Feb 28, 2018 · N596AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2018013123366Autothrottle Sys · malfunctionedAUTOTHROTTLES FAILED ON TAKEOFF. DISENGAGED APPROX 2 SECONDS AFTER TOGA. WILL NOT REMAIN ENGAGED MORE THAN A FEW SECONDS IN ALL PHASES OF THE FLIGHT. WILL NOT REMAIN ENGAGED WITH AUTOPILOT A OR B. ACFT GROUNDED. NO HISTORY LAST 90 DAYS. ACCOMPLISHED FIM 2Jan 31, 2018 · N596AS · Boeing 737890 · Auto Throttle SystemSDR ASAA2018012123247Warning Light · false activationAFTER START, ON RECALL RECEIVED A LT PACK LIGHT, RAN THE V-LIST, LIGHT EXTINGUISHED. ACFT GROUNDED. PERFORMED A PACK/ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-51-00-700-803. NO FAULTS INDICATED AND NO MAINTENANCE HISTORY ON THE LT PACK WITHIN THE PAST 10 DJan 21, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018011423150Actuator · failedRIGHT PACK LIGHT ON, ON RECALL. ACFT GROUNDED. REPLACED THE RIGHT PACK RAM AIR INLET ACTUATOR IAW AMM 21-51-22, BONDING CHECKED GOOD AND ACTUATOR OPS CHECKED GOOD.Jan 14, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2018011023133Controller · faultedON 6 PACK RECALL, MASTER CAUTION, AIR CONDITIONER, AND RIGHT PACK LIGHTS ILLUMINATED. THE LIGHTS EXTINGUISH WHEN THE MASTER CAUTION LIGHT IS RESET. ACFT GROUNDED. VERIFIED FAULT, ACCOMPLISHED PREV FLT VERIFICATION BITE FOR TEMP CONTROLLER NR 1, NO FAULTSJan 10, 2018 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2017122623005A/C Pack · false indicationDURING CLIMBOUT, THE LEFT PACK LIGHT ILLUMINATED, EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE CHECK ON PACK-ZONE TEMP CONTROLLER. TCV FAULT SHOWED ON THE NR 1 CONTROLLER. FAULT CLEARED UPON COMPLETION OF BITE CHECK. RAN THE BITDec 26, 2017 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2017121722945Control Panel · failedFIRST OFFICER`S COURSE SELECTOR DISPLAY DOES NOT ILLUMINATE. ACFT GROUNDED. VERIFIED DISCREPANCY IAW AMM 22-11-34. REMOVED & REPLACED DFCS MODE CONTROL PANEL. MCP TESTED NORMAL IAW AMM.Dec 17, 2017 · N596AS · Boeing 737890 · Autopilot SystemSDR ASAA2017120122769Reu · failedHF #2 WEAK ON TRANSMIT, OK ON RECEIVE. GROUNDED - YES. REMOVED AND REPLACED REU PER B737-800 AMM 23-51-01/401. REU INSTALLATION TESTED OK. REMOVED AND REPLACED #2 HF TRANCEIVER PER AMM 23-11-21/401. LRU BITE TESTED OK. VERIFIED #2 HF TRANSMITTED AND RECEIVED NDec 1, 2017 · N596AS · Boeing 737890 · HF Communications SystemSDR ASAA2017110922506Display · malfunctionedDIGITAL DISPLAY ON OVERHEAD PRESSURIZATION PANEL TOO BRIGHT FOR NIGHT OPS. GROUNDED - YES. REMOVED AND REPLACED CABIN PRESSURE CONTROL MODULE PER B737-800 AMM 21-31-02. TESTS GOOD PER PRESSURIZATION SYS GROUND TEST AMM 21-31-00 AND PRESSURIZATION SYS MANUAL MONov 9, 2017 · N596AS · Boeing 737890 · Cabin Pressure Control SystemSDR ASAA2017110622456Control Panel · failedAFTER LANDING, APU GENERATOR WOULD NOT CONNECT TO THE BUSS WITH BLUE LIGHT ILLUMINATED. APU BLEED VALVE OPERATES NORMALLY. ACFT GROUNDED. REPLACED THE APU REMOTE FIRE CONTROL PANEL IAW AMM 26-22-03. OPS NORMAL IAW AMM 49-11-00, NUMEROUS TIMES. GROUND VERIFICNov 6, 2017 · N596AS · Boeing 737890 · Fire DetectionSDR ASAA2017110522457Transmitter · failedDURING FLAP SELECTION, THE TRAILING EDGE FLAP NEEDLE WAS STUCK AT FLAPS 2 DEGREES EVEN THOUGH THE FLAP HANDLE WAS AT 40 DEGREES. DURING THE FINAL LANDING CHECK, RECEIVED FLAP 2 DEGREES INDICATION STILL AND WENT AROUND AND PROCEEDED TO DO THE TRAILING EDGE FLNov 5, 2017 · N596AS · Boeing 737890 · Trailing Edge Flap Control SystemSDR ASAA2017110122396Generator · failedWHILE AT THE GATE WITH THE APU POWERING THE BUSSES, THE APU POWER DISCONNECTED FROM THE AIRCRAFT. THE APU GEN OFF BUS ILLUMINATED AND THE APU POWER WOULD NOT RECONNECT. THE APU GEN SHOWS NO VOLTS OR FREQS. ACFT GROUNDED. PERFORMED APU OPERATIONAL TEST IAW AMMNov 1, 2017 · N596AS · Boeing 737890 · AC Generator-AlternatorSDR ASAA2017102722349Generator · malfunctionedAPU STARTS, BLEED AIR AVAILABLE BUT APU GENERATOR WILL NOT COME ONLINE NO VOLTS OR FREQUENCIES. ACFT GROUNDED. INTERROGATED THE APU GENERATOR CONTROL UNIT IAW FIM 24-21, TASK 801. BITE TEST PASSED, NO FAULTS. IAW FIM 24-21, TASK 820. PERFORMED APU OPS TESOct 27, 2017 · N596AS · Boeing 737890 · AC Generator-AlternatorSDR ASAA2017101922250Light · inoperativePRESSURIZATION CONTROL PANEL LIGHTS NOT ILLUMINATED. ACFT GROUNDED. CYCLED PRESSURE CONTROL, MANUAL CIRCUIT BREAKER AT THE P64 PANEL IAW AMM 20-60-01. ACCOMPLISHED DCPC BITE TEST PROCEDURE, NO FAULTS DETECTED ON BOTH PRESSURE CONTROLLERS IAW FIM 21-31TASK 8Oct 19, 2017 · N596AS · Boeing 737890 · Cabin Pressure Control SystemSDR ASAA2017101722242Radar · malfunctionedWEATHER RADAR IN AUTO ONLY SHOWING 1 VERTICAL BAND AT 0930 RELATIVE TO ACFT NOSE. WHEN MANUAL, RADAR PROVIDED FULL SCAN. ACFT GROUNDED. PERFORMED A WEATHER RADAR BITE IAW FIM 34-43, TASK 801. NO FAULTS FOUND. PERFORMED WEATHER RADAR SYSTEM OPS TEST IAW AMM Oct 17, 2017 · N596AS · Boeing 737890 · Weather Radar SystemSDR ASAA2017100322113Fmc · malfunctionedLEFT FMC FAILED FOR APPROXIMATELY 30 SECONDS. OPERATION RESTORED ON ITS OWN. ACFT GROUNDED. MENU / IDENT 1/X PAGE SHOWS NORMALLY ON POWER-UP. LIKELY SOFTWARE RESET IAW FIM 34-61 TASK 836. FMCS OPERATIONAL TESTED NORMAL IAW AMM 34-61-00-710-801. NO HISTORY Oct 3, 2017 · N596AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2017091821969Warning Light · false activationLEFT PACK LIGHT ILLUMINATED WITH MASTER CAUTION RECALL AND EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED LEFT & RIGHT PACK TEMP CONTROL BITE IAW FIM 21-62 TASK 801. NO FAULTS.Sep 18, 2017 · N596AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2017091221920Filter · dirtySTRONG DIRTY SOCK ODOR AFTER TAKEOFF AND AGAIN DURING APPROACH. ACFT GROUNDED. COMPLIED WITH CABIN ODOR IAW FIM 05-51, TASK 814. UNABLE TO DETECT ANY ODORS AT THIS TIME. CHECKED ALL GALLEY OVENS AND COFFEEMAKERS FOR DISCREPANCIES WITH NO DEFECTS NOTED. ACCOSep 12, 2017 · N596AS · Boeing 737890 · Air Distribution SystemSDR ASAA2017090821893Probe · out of limitsWHILE PERFORMING T/C 78273000 NR 1 ENGINE HAS ECONOMIC FAULT MESSAGE 77-20861. "EGT SIGNAL OUT OF RANGE" ECONOMIC FAULT, DEFERRED PER T/C 78273000 NR 1 ENGINE. GROUNDED - YES. VERIFIED THAT THE FAULT WAS STILL ACTIVE. PERFORMED A T49.5 PROBE AND EGT SYSTEM INSSep 8, 2017 · N596AS · Boeing 737890 · Engine EGT/TIT Indicating SystemSDR ASAA2017083021753Control Module · malfunctionedCLIMBING OUT OF 10,000, NOTICED THE PRESSURIZATION PANEL WAS BLANK. FLT ALT, LAND ALT, AND OUTFLOW VALVE WERE BLANK. ACFT GROUNDED. PERFORMED FIM 21-31,TASK 803. CABIN PRESSURE CONTROL MODULE DISPLAY AND RESET POWER TO THE AIRCRAFT CABIN PANEL DISPLAY CAME Aug 30, 2017 · N596AS · Boeing 737890 · Cabin Pressure Control SystemSDR ASAA2017082221700Satcom · lockedSATCOM LOCKED UP. ACFT GROUNDED. ACCOMPLISHED A RESET PROCEDURE IAW QRH. SATCOM OPS RESTORED NORMAL.Aug 22, 2017 · N596AS · Boeing 737890 · Communications SystemSDR ASAA2017082121683Hf Comm · malfunctionedNR 1 HF RADIO FAILED. ACFT GROUNDED. PERFORMED FIM 23-11, TASK 801. NR 1 HF SHOWS NO FAULTS. SYSTEM RETURNED TO NORMAL. GROUND FUNCTIONAL TEST PASSED.Aug 21, 2017 · N596AS · Boeing 737890 · Communications SystemSDR ASAA2017082021682Satcom · lockedSATCOM LOCKUP ON POWER TRANSFER. ACFT GROUNDED. ACCOMPLISHED RESET IAW QRH. SATCOM OPS RESTORED NORMAL.Aug 20, 2017 · N596AS · Boeing 737890 · Communications SystemSDR ASAA2017081821673Screw · wornNR 2 ENG FAN DUCT PANEL FWD BOTTOM SCREW LOOSE. ACFT GROUNDED. REPLACED WORN OUT SCREW IAW AMM 72-23-07-400-801-F00.Aug 18, 2017 · N596AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2017073021482Warning Light · false activationOUTFLOW VALVE INDICATION SHOWED OPEN DURING CRUISE. ACFT GROUNDED. BOOTED AIRCRAFT POWER AND PERFORMED OPS TEST OF THE OUTFLOW VALVE AND INDICATION, NO DEFECTS NOTED IAW AMM 21-31-00-710-801.Jul 30, 2017 · N596AS · Boeing 737890 · Pressure Regulator/Outflow Valve
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