N478AS

Service difficulty reports · 188

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 = 'N478AS' 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 ASAA2018122637512Warning Light · false activationLEFT PACK LIGHT ILLUMINATED ON RECALL AT TOP OF DESCENT LIGHT EXTINGUISHED WITH RESET OF MASTER CAUTION. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 21-62 TASK 801. NO FAULTS LOGGED.Dec 23, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018122627513Autopilot Sys · malfunctionedDURING CLIMB ABOVE FL240 AP "B" HAD DIFFICULTY HOLDING THE SELECTED AIRSPEED. SEEMS TO OVER COMPENSATE FOR CORRECTIONS. AP "A" SEEMED TO WORK FINE. GROUNDED - YES. ACCOMPLISHED FMC BITE REF B737-900 FIM 34-61 TASK 801. FOUND DFCS TARGET AIRSPEED SSM MESSAGE. ADec 22, 2018 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2018121967446Control Valve · failedUPON RECALL CONT CAB ZONE TEMP LIGHT CAME ON. GROUNDED - YES. REMOVED AND REPLACED CABIN TRIM MODULATING VALVE PER B737-900 AMM TASK 21-61-21, BITE LEAK AND OPS TESTS GOOD.Dec 16, 2018 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018120527229Satcom · lockedDURING POWER TRANSFER FROM GRD TO APU SAT COMM LOCKED UP. GROUNDED - YES. FOLLOWED QRH PROCEDURE AND WAS ABLE TO RESTORE SAT COMM.Dec 5, 2018 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2018120397171Control Valve · faultedON TAXI OUT, RIGHT PACK LIGHT ILLUMINATED. RAN QRH, LIGHT DID NOT INITIALLY GO OUT. TRIED RESET SECOND TIME PACK LIGHT WENT OUT ON TAXI BACK TO GATE PACK LIGHT ILLUMINATED AGAIN. GROUNDED - YES. ACCOMPLISHED BITE OF BOTH TEMP CONTROLLERS REF B737-900 FIM 21-6Nov 29, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018113087151Actuator · faultedAFTER LANDING, STARTED APU RT PACK LT CAME ON DURING TAXI. RAN QRH PROCEDURE AND LT WOULD NOT GO OUT, TURNED OFF APU BLEED AND PACKS. RT PACK COOLED DOWN AND LT WENT OUT WITH TRIP RESET BUTTON PUSHED. GROUNDED - YES. PERFORMED B737-900 FIM 21-62 TASK 801 - PACNov 28, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018112657049Warning Light · false activationAT FL 280 RT PACK LIGHT ILLUMINATED- LIGHT EXTINGUISHED PER TRIP RESET IN QRH. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST, REF B737-900 AMM 21-61-00, OPS CHECK GOOD. PREVIOUS FLIGHT LOGGED EXIT PACK SENSOR FAULT.Nov 25, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018111966880Warning Light · false activationLH PACK LIGHT ON RECALL - EXTINGUISHES ON RESET. GROUNDED - YES. PER B737-900 FIM 21-32 TASK 801 AND 834 INITIAL EVALUATION #2 PACK/ZONE TEMP CONTROL HAS ZONE TRIM VALVE FAULT. VERIFY FUNCTION PASS. GREEN. #1 PACK/ZONE TEMP CONTROL BITE SHOWS NO FAULTS. VERIFYNov 16, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018110526728Power Unit · failedAPU FAILED TO START ON DC POWER, WITH FAULT LIGHT. STARTS NORMALLY WITH EXTERNAL POWER CONNECTED. GROUNDED - YES. APU BITE PER FIM 49-60 TASK 801 SHOWED FAULT 49-41249 START CONVERTER UNIT SHOWS LOW BATTERY POWER LOGGING FOR EACH START ATTEMPT. ALSO FAULT 49-4Nov 5, 2018 · N478AS · Boeing 737990ER · APU Start/Ignition SystemSDR ASAA2018102926630Warning System · false activationON RECALL CONT CABIN ZONE TEMP LIGHT ON. GOES OUT ON RECALL. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMP CTL BITE. FAULTED FLT DK TCV. FAULT CLEARS. ACCOMPLISHED BITE AGAIN. NO FAULTS. RAN PACKS & VARIED TEMP. NO FAULTS. REF FIM 21-62 TASK 801.Oct 26, 2018 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018101526457Actuator · inoperativeON PDC WALKAROUND. FOUND LT RAM AIR DOOR NOT FULLY OPEN. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE, FOUND INLET AND EXIT SRADA FAULTS REF AMM 21-61-00. REMOVED AND REPLACED INLET AND EXHAUST RAM AIR ACTUATORS, INSTALLATION TEST OK, REF AMM 21Oct 12, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018101026452Pressure Switch · failedNR 1 FUEL FILTER BYPASS LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED FIM 73-05 TASK 801 ON #1 ENGINE. REMOVED AND REPLACED FUEL DIFFERENTIAL PRESSURE SWITCH REF AMM 73-34-01. OPS & LEAK CHECK GOOD.Oct 10, 2018 · N478AS · Boeing 737990ER · Fuel Pressure SensorSDR ASAA2018100226343Fmc · malfunctionedLT FMC FAIL WITH VTK FLAG ON TAXI INTO GATE AFTER LANDING. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836 & LT FMC RESTORED. GROUND FUNCTIONAL CK GOOD.Oct 2, 2018 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018091426123Warning System · false activationNR 2 HF RADIO INOP COMMS PANEL DISPLAYS FAIL, FAIL WHEN SELECTED. GROUNDED - YES. PERFORMED OPS TEST OF NR 2 HF RADIO PER AMM 23-11-00 ON FREQ 5.547. NO FAULTS NOTED AT THIS TIME.Sep 12, 2018 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2018091126083Warning System · false activationLT PACK LIGHT ILLUMINATED AFTER ENGINE START, RESET VIA MASTER CAUTION. GROUNDED - YES. PERFORMED FIM 21-62-TASK 801. BITE PROCEDURE CHECKED GOOD. NO FAULT NOTED. ALL GREEN SHOWN. OPS NORMAL.Sep 9, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018090425991Unknown · malfunctionedAMBER FD FLAG ON F/O ADI. GROUNDED - YES. UNABLE TO ENTER BITE FOR DFCS 'B', CYCLED C/B'S, OPERATION RESTORED. ACCOMPLISHED CURRENT STATUS, FLT DIR INTERACTIVE AND LRU REPLACEMENT PER AMM 22-11-00 FOR DFCS/ A/T. ALL CKD NML.Aug 31, 2018 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2018082725908Control Valve · failedDURING RECALL, THE PACK LIGHT ILLUMINATED, RESET ON RECALL. ACFT GROUNDED. TROUBLESHOT AND FOUND THE RT TEMP CONTROL VALVE AT FAULT. REMOVED AND REPLACED THE RT PACK TEMP CONTROL VALVE IAW AMM 21-51-10, OPS & LEAK CHECKED GOOD.Aug 25, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018082325874Filter · dirtyDURING FLIGHT THE FLIGHT DECK BECAME HOT AND INDICATED ABOUT 40C WITH THE TEMP SELECTER ON FULL COLD. WE FOLLOWED THE QRH AND TURNED THE TRIM AIR SWITCH OFF. THEN THE FLIGHT DECK TEMPATURE COOLED AND EVERYTHING OPERATED NORMALLY. THE CABIN TEMPATURE WAS NORMALAug 20, 2018 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018073025569Warning System · false activationRT PACK LIGHT ILLUMINATED DURING RECALL. GROUNDED - YES. PERFORMED FIM TASK 21-62-TASK 801. BITE PROCEDURE CHECKED GOOD. NO FAULT NOTED. ALL GREEN SHOWN. OPS NORMAL.Jul 29, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018060754938Connector · disconnectedWEATHER RADAR INTERMITTENT, FAILED IN FLIGHT. ACFT GROUNDED. FOUND MOUNT FAN DISCONNECT LOOSE & FAN NOT WORKING. SECURED CONNECTOR AND FAN OPS NML, WEATHER RADAR OPS NORMAL IAW AMM 34-43-00. GROUND VERIFICATION GOOD.Jun 5, 2018 · N478AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018053024852Switch · malfunctionedAFTER PUSH BACK, & ENGINE STARTS, THE RIGHT PACK LIGHT ILLUMINATED. PERFORMED QRC PROCEDURE. RIGHT PACK LIGHT REMAINED ILLUMINATED. RETURNED TO GATE. ACFT GROUNDED. LEAK CHECKED AND VERIFIED ALL SENSE LINES GOING TO, AND AROUND THE ACM ARE TIGHT AND DOMay 30, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA201805314855Acm · failedWHILE RUNNING THE RT PACK, THE PACK TEMP ROSE THROUGH 80 C, NO AIRFLOW WAS EXITING FROM RAM AIR DUCT. ACFT GROUNDED. FOUND THE R/H ACM TO BE SEIZED AND MISSING ONE BLADE. REMOVED AND REPLACED THE RIGHT PACK AIR CYCLE MACHINE PER B737-900 AMM 21-51-04. OPS May 30, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018052824842Actuator · faultyRIGHT "PACK" LIGHT ILLUMINATED ON OVERHEAD PANEL DURING MASTER CAUTION RECALL. PACK LIGHT RESET INDICATING SINGLE CONTROLLER FAIL. GROUNDED - YES. REF TSR 701842, BITE CHECK OF RIGHT PZTC LOGGED "SRADA EXIT" ON PREV FLT. NO FAULTS ON LEFT PZTC. REPLACED RIGHT May 28, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018052724809Control Valve · faultyRIGHT PACK ILLUMINATED AS WE REACHED CRUISE. RAN QRH RIGHT PACK TEMP REACHED 76 DEGREES. ISOLATED PACKS TURNED RIGHT PACK OFF. CONTINUED FLIGHT AT FL 340. GROUNDED - YES. PERFORMED BITE TEST PER AMM 21-61-00. NR 2 CONTROLLER BOX FAULTED SRADA EXIT AND TCV AND May 27, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018052624811Warning System · false activationRIGHT PACK ILLUMINATED, RAN CHECKLIST, UNABLE TO RESET SYSTEM. FLIGHT CONTINUED WITH RIGHT PACK OFF. GROUNDED - YES. ACCOMPLISHED CTC BITE FIM 21-61 TASK 801. FOUND EXIT ACTUATOR FAULT LOGGED ONE TIME. CLEARED FAULT. ACCOMPLISHED BITE FIM 21-61 TASK 801. NO FAMay 26, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018052524812Warning System · false activationRIGHT PACK LIGHT ILLUMINATED AND STAYS LIT AFTER RECALL. RIGHT PACK TEMP CLIMBED FROM 55 DEGREES C TO 88 DEGREES C. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMP CONTROL BITE PER AMM 21-51-00. NO DEFECTS NOTED. RAN RT PACK FOR TEN MINUTES. NO DEFECTS NOTED. OPS May 25, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA201805214675Actuator · faultedDURING A MASTER CAUTION CHECK, THE LT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. ACCOMPLISHED A LEFT PACK/ZONE TEMPERATURE CONTROLLER BITE TEST IAW 21-61-00-700-806-002. FOUND AN EXIT ACTUATOR FAULT LOGGED. ACCOMPLISHED A LEFT RAM AIR EXIT ACTUATOR FAMay 16, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA201805174660Warning Light · false activationLEFT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHED ON RESET. QRH FOLLOWED. ACFT GROUNDED. PERFORMED A LEFT PACK TEMP CONTROLLER BITE. FOUND EXIT FAULT ON BITE, BUT NOT ON HISTORY OR VERIFY. REPEATED TEST 10 MORE TIMES. NO FAULTS IN BITE HISTORY, OR VERIFY IMay 15, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA20180514409Actuator · failedLEFT RAM AIR DEFLECTOR DOOR NOT FULLY OPEN. ACFT GROUNDED. REMOVED AND REPLACED THE ACTUATOR IAW AMM 21-51-21/401. OPS CHECKED GOOD, DOOR FULLY OPENS AND CLOSES. PERFORMED BITE TEST IAW AMM 21-61-00-700-806-002. NO FAULTS NOTED.Apr 28, 2018 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018033124090Fmc · malfunctionedDURING PREFLIGHT, EXPIERIENCED DUAL FMC FAILURE. FMC PROMPT ON CDU APPEARED, THEN DISAPPEARED. UNABLE TO ALIGN IRS. ACFT GROUNDED. UNABLE TO DUPLICATE DEFECT, RETURNED FMC SWITCH TO NORMAL POSITION AND BOTH SYSTEMS OPERATED NORMALLY. FMC BITE IAW FIM 34Mar 31, 2018 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018032324028Window · overheatedLEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED DURING CRUISE. PERFORMED QRH & LIGHT HAS NOT RE-ILLUMINATED. ACFT GROUNDED. REMOVED AND REPLACED THE WINDOW IAW AMM 56-12-11. OPS CHECKED GOOD.Mar 23, 2018 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018020623434Sensor · faultedLEFT WINDSHIELD HEAT, L2 WINDOW INDICATES OVERHEAT. ACFT GROUNDED. UNABLE TO CONFIRM FAULT. SENSORS RING OUT GOOD IAW AMM 30-41-21. ON WHCU, SENSOR FAULT SHOWS IN FAULT HISTORY. DUE TO SENSOR FAULTS AND DUE TO PREVIOUS TROUBLESHOOTING ON L/P 11855285. MOVFeb 6, 2018 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018020525041Skin · scratchedSCRATCH ON FUSELAGE SKIN BETWEEN STA 500C AND 500D BETWEEN STRINGERS 25L AND 26L. GROUNDED - YES. REPAIRED PER SRM 53-00-01 2R3. REINSPECT PER PARA (5) INSPECTION THRESHOLD OF 50,000 FLIGHT CYCLES PER TABLE 203.Feb 5, 2018 · N478AS · Boeing 737990ER · Fuselage Main, Plate/SkinSDR ASAA2018020323391Warning Light · false activationL2 WINDOW OVERHEAT LIGHT ILLUMINATED, COMPLIED WITH QRH PROCEDURE AND OVERHEAT LIGHT ILLUMINATED AGAIN. ACFT GROUNDED. PERFORMED WINDOW HEAT CONTROL UNIT BITE PROCEDURE IAW FIM 30-41 TASK 801. NO FAULTS FOUND. PERFORMED RESISTANCE CHECK OF WINDOW TEMPERATURFeb 3, 2018 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018011923239Fmc · malfunctionedRIGHT FMC FAILED IN FLIGHT. GROUNDED - YES. PERFORMED GOOD RESET AND BITE PROCEDURE OF RT FMC PER FIM 34-61 TASK 836 AND FIM 34-61 TASK 801. PERFORMED GOOD OPS TEST OF RT FMC PER AMM 34-61-00-710-801. FMC TRANSFER SWITCH IS SET TO NORMAL.Jan 19, 2018 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017113022733Warning Message · unknownFAIL MESSAGE ON #1 HF RADIO. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 23-11 TASK 803. GROUND VERIFICATION TEST GOOD.Nov 30, 2017 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2017112922732Warning Light · illuminatedUPON RECALL "AIR COND" ILLUMINATED ON 6 PACK. LEFT "PACK" LIGHT ALSO ILLUMINATED. BOTH LIGHTS EXTINGUISHED UPON RESET. GROUNDED - YES. NO CURRENT FAULTS - NO LOGGED FAULTS - BOTH ZTC TEST GOOD.Nov 29, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017102322296Sensor · failedAPU HAS PREVIOUS REPORTS OF FAULT LIGHT AND FAULT MESSAGE 49-61223. INLET TEMP SENSOR SHOWS SHORT CIRCUIT. ACFT GROUNDED. REMOVED AND REPLACED APU INLET TEMP SENSOR IAW AMM 49-61-31. RAN APU AND PERFORMED INSTALLATION TEST AND APU BITE PROCEDURE IAW AMM 49Oct 23, 2017 · N478AS · Boeing 737990ER · APU Indicating SystemSDR ASAA2017102122275Warning Light · false activationAPU FAULT LIGHT ILLUMINATED FOR 1 MINUTE, AFTER TURNING IT OFF AFTER ENGINE START. ACFT GROUNDED. ACCOMPLISHED APU BITE CHECK IAW FIM 49-60, 801. NO CURRENT FAULTS LOGGED. FAULT 49-61223. FOUND TO BE INTERMITTENT. APU GROUND VERIFICATION CHECKED NORMAL.Oct 21, 2017 · N478AS · Boeing 737990ER · Airborne Auxiliary Power Unit (APU) SystemSDR ASAA2017091121909Fmc · malfunctionedF/O'S DISPLAY VTK ON TAXI IN. ACFT GROUNDED. VERIFIED THE RN 2 FMC KEEPS REBOOTING. ACCOMPLISHED FIM 34-61, TASK 836. SYSTEM RESTORED ITSELF. BOTH CIRCUIT BREAKERS CONFIRMED RESET.Sep 11, 2017 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017080821580Actuator · failedLEFT PACK LIGHT ILLUMINATES WITH MASTER CAUTION RECALL AND EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. ACFT GROUNDED. CONFIRMED FAULT, LT PACK/ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-61-00. FAILED LT RAM AIR INLET ACTUATOR. REMOVED & REPLACED THE ACTUAug 8, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017080721571Probe · overheatedFMC WILL NOT PROMPT TO TEMP & POWER SETTINGS AND TAKE OFF TRIM WILL NOT BE PROMPTED WHEN TAKE OFF NUMBERS ARE EXECUTED. ACFT GROUNDED. COOLED TAT PROBE, SYSTEM OPS OK.Aug 7, 2017 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017072221435Autoland Sys · no testAUTO LAND SURVEY - UNSATISFACTORY A/C LANDED 70 FEET LEFT OF CENTERLINE WIND 270/6 ON RUNWAY 26RT. GROUNDED - YES. ACCOMPLISHED DFCS BITE FAULT REVIEW REFERENCE B737-900 AMM 22-11-00. NO CURRENT FAULTS. DFCS CURRENT STATUS QUICK TEST PASS. PERFORMED DFCS LAND Jul 22, 2017 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2017061921124Autoland Sys · malfunctionedAUTOLAND UNSUCCESSFUL, LEFT OF CENTERLINE 60 FEET. ACFT GROUNDED. IAW AMM 22-00-01-730-807 REVIEWED FAULTS DFCS HISTORY BITE GROUP NR 20. NO FAULTS FOR AUTOLAND. PERFORMED DFCS LAND VERIFY BITE GROUP NR 49 IAW AMM 22-11-00-700-801 AND ELEVATOR POSITION SJun 19, 2017 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2017061821123Warning Light · false activationLEFT RAM DOOR FULL OPEN ILLUMINATED FOR ENTIRE FLIGHT. ACFT GROUNDED. COULD NOT DUPLICATE MALFUNCTION. PZTC BITE CHECK NORMAL WITH NO FAULTS. VERIFIED BOTH SRADA MOVE SMOOTHLY AND COMPLETELY IN BOTH DIRECTIONS. NO BINDING NOTED. VERIFED BOTH SRADA GO TO CRUISJun 18, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017051020717Fmc · malfunctionedNR 2 FMC NO DATA & SINGLE FMC MESSAGE IN SCRATCHPAD AT 3 MINUTES TO PUSH. COMPLETED FMC DISAGREE QRH CHECKLIST WITH SUCCESS. ACFT GROUNDED. PERFORMED FIM 34-61 TASK 835. RESET 2 C/B. NO FAULTS OR DISAGREE MESSAGES. INTERMITTENT FAULT.May 10, 2017 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017043020580Deflector · malfunctionedLEFT RAM AIR DEFLECTOR DOOR NOT FULLY OPEN ON GROUND. CAN BE PUSHED CLOSED WITH LIGHT HAND PRESSURE. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE TEST, NO FAULTS IAW AMM 21-61-00. VERIFIED DEFLECTOR DOOR ADJUSTED CORRECTLY IAW AMM 21-51-21. DEFLECTOR DApr 30, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042920553Controller · failedDURING CRUISE AT FL 400, RECALL PUSHED AND LT PACK LIGHT ILLUMINATED WITH MASTER CAUTION AIR CONDITIONING, ALL TEMPS AND PRESSURES NORMAL. ACFT GROUNDED. REMOVED & REPLACED THE NR 1 TEMP CONTROLLER. OPS CHECKED GOOD IAW AMM 21-61-20. REMOVED & REPLACED THEApr 29, 2017 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2017042820549Valve · faultedCLIMBING THRU FL 340, MASTER CAUTION ILLUMINATED WITH THE LEFT PACK LIGHT ON, FOLLOWED QRH LIGHT EXTINGUISHED. THEN CAME BACK ON EACH TIME RESET WAS USED. FOLLOWED QRH FURTHER AND SHUT LEFT PACK OFF, CLOSED ISOLATION VALVE . ODOR ASSOCIATED WITH THE ISSUE PRIApr 28, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042720552Warning Light · illuminatedDURING DESCENT, WITH LEFT PACK ON MEL, LEFT PACK LIGHT ILLUMINATED. TRIP RESET HAD NO EFFECT. SELECTED PACK OFF AND LEFT BLEED OFF. LIGHT WENT OUT APPROX 7-10 MINUTES LATER. EQUIPMENT COOLING EXHAUST ALSO ILLUMINATED AND DID NOT GO OUT AFTER SELECTING ALTERNApr 27, 2017 · N478AS · Boeing 737990ER · Cabin Cooling System
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