N477AS

Service difficulty reports · 175

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 = 'N477AS' 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 ASAA2019090530612Fuel Nozzle · defectiveAPU REPORTS SHOW A RAPID SPIKE IN CT5ATP TEMP CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 605 DEGREES. GROUNDED - YES. REPLACED APU FUEL NOZZLES. LEAK CHECK OK. REF AMM 49-31-14-400-801, FIM 49-90 TASK 825 STEP D(2). STEP D(10) ALSO COMPLETE, REFERS TO CONTINUEDSep 5, 2019 · N477AS · Boeing 737990ER · APU Engine Fuel and ControlSDR ASAA2019083093538Warning Message · false activationON HGS AIII AND AUTOLAND APPROACH, RECEIVED APPROCH WARNING ANNUNCIATION AT ABOUT 50' AGL. ACFT WAS TRACKING ABOUT 50' OR MORE TO THE LEFT. WIND WAS 170 DEGREES/11 KTS AT 500'. CRITICAL AREA WAS CLEAR. GROUNDED - YES. ACCOMPLISHED LAND VERIFY TEST IAW AMM 22-1Aug 29, 2019 · N477AS · Boeing 737990ER · Autopilot SystemSDR ASAA2019070629972Sensor · inoperativeDURING WALK AROUND, HEARD LOUD "BACKFIRE" TYPE NOISE FROM APU EXHAUST AREA, COUPLED WITH A DRAMATIC REDUCTION IN AIRFLOW NOTED. HEARD X4 EVENTS AT 30 SECONDS APART, AND X2 MORE WHEN INTERNAL TO THE FLIGHT DECK. APU ON ELEC & BLEED AIR, EXT POWER AND AIR WERE BJul 6, 2019 · N477AS · Boeing 737990ER · APU ControlsSDR ASAA2019062929872Unknown · malfunctionedWE HAD A DUAL FMC FAILURE THREE TIMES (VTK/MAP) BIT IT CAME BACK EACH TIME. LOST VNAV DATA FOR GOOD THOUGH. GROUNDED - YES. ISSUE IS INTERMITTENT LT FMC, RT FMC HAD NO ISSUES. PERF FIM 34-61 TASK 836. OPENED, THEN RESET C/B A6 ON P18-2. L/H & R/H FMC OPS NML. Jun 29, 2019 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019041729029Fmc · malfunctionedAT CRUISE FLIGHT LEVEL 320, "VTK' FOLLOWED BY "MAP" DISPLAYED ON CAPTAIN'S NAV DISPLAY. LASTED ABOUT 15 SECONDS. NORMAL OPERATION FOLLOWED AFTER THAT. 1:30 LATER "VTK" ON CAPTAIN'S SIDE AND BOTH FMC'S LOST. FOLLOWED QRH, NO HELP. USING FMC ON RIGHT. "VTK" GONEApr 17, 2019 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019022028282Fmc · malfunctionedIN CRUISE L FMC FAILED IN CRUISE FMC RECOVERED ON ITS OWN. A/P ENTERED CWS-R AND ALT HOLD. NO FMC DATA ON BOTH CDU. FAILED AGAIN. GROUNDED - YES. RESET NR 1 FMC IAW FIM 34-61-TASK 836 GRND VERIFICATION SUCCESSFUL.Feb 20, 2019 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018121077263Fmc · malfunctionedLEFT FMC FAILED BRIEFLY. RECOVERED AFTER ABOUT FIVE SECONDS. NORMAL OPS THEREAFTER. GROUNDED - YES. PERFORMED B737-900 FIM 34-61-00-810-836. LEFT FMC OPS NML. INTERMITTENT FAULT PER FIM.Dec 7, 2018 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018083025953Unknown · unknownCAPTAIN'S F/D WILL NOT ENGAGE F/D FLAG ILLUMINATED. GROUNDED - YES. CONFIRMED. OPENED, THEN RESET 1 EA C/B ON P18-1, D2 FCC A DC. FD FLAG PULLED. DFCS LRU RPLC TEST GOOD REF B737-900 FIM 22-11 TASK 801 AND B737-900 AMM 22-11-00.Aug 29, 2018 · N477AS · Boeing 737990ER · Autopilot SystemSDR ASAA2018081315740Hf Comm · malfunctionedNR 2 HF SHOWS FAIL IN ACTIVE AND STANDBY WINDOW, WHEN IN DATA MODE AND COMM MODE. CALLED AND HAD A POSITIVE CHECK AND COMM CHECK OK. ACFT GROUNDED. TROUBLESHOT IAW FIM 23-11 TASK 802. INITIAL EVALUATION AND BITE CHECK SHOWED NO CURRENT FAULTS, NO FAULTS Aug 11, 2018 · N477AS · Boeing 737990ER · HF Communications SystemSDR ASAA2018062525200Unknown · malfunctionedVTK & MAP FLAG ON NAV DATA DISPLAY AND SINGLE FMC OPS DISPLAYED ON FMC. GROUNDED - YES. ACCOMPLISHED AMM FIM 34-61 TASK 836, FMC'S OPS NML.Jun 25, 2018 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018061125027Warning System · false activationAFTER LANDING, EXITING RUNWAY, AUTO FAIL LIGHT ILLUMINATED, FOLLOWED BY ALTN LIGHT ILLUMINATION. GROUNDED - YES. PERFORMED FIM 21-31 TASK 827, AUTO FAIL LIGHT, EXTINGUISHED, GROUND VERIFICATION SUCCESSFUL.Jun 11, 2018 · N477AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA201806114993Satcom · malfunctionedSATCOM WOULD NOT TRANSMIT, BUT DID RECEIVE. ACFT GROUNDED. PERFORMED SATCOM LOCKUP PROCEDURE FROM QRH 5.4. SATCOM OPS NORMAL.Jun 7, 2018 · N477AS · Boeing 737990ER · Communications SystemSDR ASAA2018053104854Warning Message · false activationAUTO FAIL LIGHT ILLUMINATED DURING TAXI OFF RUNWAY. ALTERNAT LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED FIM 21-31 TASK 827. AUTO FAIL LIGHT ON FAULT ISOLATION. AUTO FAIL LIGHT EXTINGUISHED, GROUND VERIFICATION SUCCESSFUL.May 30, 2018 · N477AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2018052824816Satcom · lockedSAT COMM LOCKUP. GROUNDED - YES. CREW PERFORMED THE SAT COMM LOCKUP QRH SAT COMM RECOVERED.May 28, 2018 · N477AS · Boeing 737990ER · HF Communications SystemSDR ASAA2018052974823Fmc · malfunctionedLEFT FMC SHOWED SOME INDICATIONS OF FAILING. VTK FOLLOWED BY MAP FAILURE, ON THE CAPTAIN`S NAV DISPLAY. RESTORED ON ITS OWN AFTER ABOUT 10 SECONDS BEFORE ANY CORRECTIVE ACTION WAS TAKEN. SEEMS TO BE OPERATING NORMALLY SINCE. ACFT GROUNDED. PERFORMED FIM 34-May 27, 2018 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA201805144591Sign · unsecureEXIT SIGN ON CEILING AT ROW 16, & 17 HAS PARTIALLY FALLEN DOWN. ACFT GROUNDED. FOUND ROW 16 EMERGENCY EXIT SIGN ON CEILING HAS LOOSE FASTENERS. ADJUSTED THE SIGN AND TIGHTENED ALL LOOSE FASTENERS. OK FOR SERVICE IAW AMM 33-51-01.May 11, 2018 · N477AS · Boeing 737990ER · Emergency LightingSDR ASAA2018040324126Insert · defectiveDURING A NR 2 ENGINE INLET INSPECTION. FOUND DAMAGE ON THE NR 3 FAN DUCT PANEL AT AFT UPPER SCREW, DOES NOT SECURE PANEL. ACFT GROUNDED. REMOVED AND REPLACED A DEFECTIVE INSERT, IAW SPM 70-42-13-350-014, AND AMM 72-23-07-400-801-F00. LEAK CHECKED GOOD IAW AApr 3, 2018 · N477AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2018031223832Fmc · malfunctionedBOTH FMC'S BLANKED FOR APPROX 10-15 SECONDS APPROX 10 NW BKA VOR AT FL 350: MENU PAGE BLANK AT L1: VTK FLAG ON CAPT SIDE NAV DISPLAY. GROUNDED - YES. PERFORMED FIM 34-61 TASK 807 FOUND TO BE INTERMITTENT FAULT. NO DEFECTS NOTED.Mar 12, 2018 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018030223731Control Valve · faultedLEFT PACK ILLUMINATED ON RECALL & RESET ON M/C. ACFT GROUNDED. LEFT CABIN TEMP CONTROLLER BITE DONE IAW FIM 21-62 TASK 801. PACK TCV FAULT ON PREVIOUS FLIGHT, RESET ON VERIFY. BITE GOOD. REMOVED AND REPLACED THE LT TEMPERATURE CONTROL VALVE IAW AMM 21-51Mar 2, 2018 · N477AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018022723712Warning Message · false activationLEFT PACK ILLUMINATES WITH MASTER CAUTION RECALL. EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. TROUBLESHOT IAW FIM 21-62, TASK 830, LEFT PACK TEMP CONTROL BITE SHOWED THIS PACK TCV. PERFORMED PZTC RESET, FAULT CLEARED. NO FURTHER MAINTENANCE ACTIFeb 27, 2018 · N477AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017123023049Sliding Window · failedON APPROACH, THE LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. QRH PROCEDURE ACCOMPLISHED. OVERHEAT LIGHT REMAINED ON WITH WINDOW HEAT ON AFTER COOLDOWN TIME. WINDOW HEAT SELECTED OFF. PERFORMED RESISTANCE CHECK OF WINDOW HEAT FILM FOR LT SIDE WINDOW AND FOUDec 30, 2017 · N477AS · Boeing 737990ER · Flight Compartment WindowsSDR ASAA2017122923047Warning Light · false activationLEFT SIDE WINDOW HEAT LIGHT ILLUMINATED DURING DESCENT. QRH FOLLOWED. LIGHT ILLUMINATED AGAIN. SWITCHED OFF. ACFT GROUNDED. UNABLE TO DUPLICATE FAULT. LT SIDE WINDOW HEAT OPS CHECKED GOOD IAW FIM 30-41 TASK 814. NO HISTORY 30 DAYS.Dec 29, 2017 · N477AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2017121422906Fmc · failedL FMC FAILED 3 TIMES AND SELF RECOVERED. THE 4TH TIME THE QRH WAS COMPLETED, NO ISSUES THE LAST HOUR AND A HALF OF THE FLIGHT. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 801, NO FAULTS NOTED AT THIS TIME. NO HISTORY LAST 60 DAYS.Dec 14, 2017 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017120522783Radar · malfunctionedWXR RADAR SHOWING FALSE RETURNS IN AUTO MODE WITH WX-T SELECTED IN CLEAR AIR AT CRUISE FL340 WITH NO VISIBLE WEATHER PAINTS 3 CEUS APPROX 1/2 INCH IN DIAMETER ON 80 AND 160 NM RANGE, AT 2:00- 2:30 POSITION ON ND. CEUS DO NOT APPEAR IN MANUAL MODE. LASTED 30 MIDec 5, 2017 · N477AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2017112622680Lamp · inoperativeR1 EXTERIOR EMERGENCY LIGHT INOPERATIVE DURING TEST. ACFT GROUNDED. REPLACED THE LAMP AT THE R1 EXTERIOR SLIDE EMERGENCY LIGHT IAW AMM 33-51-04. OPS CHECKED GOOD.Nov 26, 2017 · N477AS · Boeing 737990ER · Emergency LightingSDR ASAA2017111522579Valve · faultedCONTROL CABIN ZONE TEMPERATURE ILLUMINATED ON RECALL. RESETS ON MASTER CAUTION RESET. ACFT GROUNDED. THE CONTROLLER FAULTED FLIGHT DECK TRIM VALVE. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE IAW AMM 21-61-00, TEST PASSED. FAULT RESET.Nov 15, 2017 · N477AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2017091721967Control Valve · faultedRIGHT PACK ILLUMINATED DURING RECALL. OFF WITH RESET. ACFT GROUNDED. RIGHT PACK PRIMARY TEMP CONTROL IS INOP. PERFORMED A PTC BITE IAW FIM 21-62 TASK 801. RT PTC SHOWS A TCV FAULT. REMOVED AND REPLACED RT PACK TVC IAW AMM 21-51-10, BITE AND OPS CHECKED GOODSep 17, 2017 · N477AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017091621940Warning Light · false activationPACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHED ON RESET. ACFT GROUNDED. PERFORMED PTC BITE PROCEEDURE IAW FIM 21-62-00. TCV LIGHT ILLUMINATED AND EXTINGUISHED AFTER RESET, RECALL CHECK OK, NO 30 DAY HISTORY.Sep 16, 2017 · N477AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017072921477Filter · cloggedDURING RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATED ON MASTER CAUTION. RESET LIGHT EXTINGUISHES. ACFT GROUNDED. PACK/ZONE TEMP CONTROLLER BITE IAW FIM 21-62 TASK 801 SHOWED RIGHT PZTC FAULT FOR FLIGHT DECK TRIM VALVE. ACCOMPLISHED T/S FOR FLIGHT DECK TRIM VALVEJul 29, 2017 · N477AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2017051720813Ecu · failedON APU START, A FAULT LIGHT ILLUMINATED. APU ECU INOPERATIVE. ACFT GROUNDED. ACCOMPLISHED APU BITE IAW TASK 49-60, TASK 801. LOGGED ECU FAILED. REMOVED AND REPLACED THE APU ECU IAW AMM 49-61-12 . GROUND VERIFICATION CHECKED OK.May 17, 2017 · N477AS · Boeing 737990ER · APU ControlsSDR ASAA2017051720809Control Unit · failedSPCU INOPERATIVE ELECTRIC LIGHT OVERHEAD ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED BITE CHECK IAW FIM 24-31, TASK 801, SPCU FAILED. UNABLE TO CLEAR. REMOVED & REPLACED SPCU IAW AMM 24-14-11, PB 400. GROUND VERIFICATION CHECKED OK.May 17, 2017 · N477AS · Boeing 737990ER · DC Generating SystemSDR ASAA2017043020582Warning Light · false activationHF 2 INDICATES FAILED. ACFT GROUNDED. PERFORMED HF COMMUNICATION SYSTEM TEST IAW AMM 23-11-00. NO DEFECTS NOTED. PERFORMED BITE PROCEDURE IAW FIM 23-11-00. NO DEFECTS NOTED. COULD NOT DUPLICATE DISCREPANCY.Apr 30, 2017 · N477AS · Boeing 737990ER · HF Communications SystemSDR ASAA2017042220512Fmc · malfunctionedLEFT FMC INOP - CAPT'S. GROUNDED - YES. ACCOMPLISHED BITE ON FMC'S FLT HISTORY - LOGGED "PGM FAULT" ON LEG 2. ACCOMPLISHED FIM 34-61 TASK 807, LT FMC OPS NORMAL. A/C CHECKED AND RELEASED FROM MEL 34-36J, CREW PLACARD REMOVED, FMC TRANSFER S/W PLACED TO NORMAL Apr 22, 2017 · N477AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017040420428Intercostal · crackedINTERCOSTAL WEB BS 785 BELOW STRINGER 20R , FASTENER HOLES WILL NOT PASS HFEC. ACFT GROUNDED. FABRICATED A NEW INTERCOSTAL IAW DWG 146A8320 REV-, DWG 146A8322 REV-, AND EA 900ER-53EA-18712. REV 00.Apr 4, 2017 · N477AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2017040320367Intercostal · crackedAFT CARGO INTERCOSTAL BETWEEN BS 794 - 847, STRINGER 25R IS CRACKED. ACFT GROUNDED. LOCATED AND DRILLED A NEW INTERCOSTAL IAW ER 51-40-05.Apr 3, 2017 · N477AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2017040220380Angle · crackedAFT CARGO LOWER SILL INTERCOSTAL ANGLE BS 806, STRINGER 25R IS CRACKED. ACFT GROUNDED. REMOVED AND REPLACED THE ANGLE IAW DWG 146A8120, AND SRM 51-40-02.Apr 2, 2017 · N477AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2017032420250Control Valve · faultedLEFT PACK LIGHT ILLUMINATED ON RECALL, EXTINGUISHED ON SYSTEM RESET. ACFT GROUNDED. PERFORMED BIT ON PACK ZONE TEMP CONT 1. FOUND PACK TCV FAULT. R & R THE LEFT PACK TCV IAW AMM 21-51-10. RAN PACK, HIT RECALL. NO PACK LIGHT. OPS & BITE CHECKED GOOD.Mar 24, 2017 · N477AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017031220141Warning Message · false activationPRIMARY CONTROL TEMP INOPERATIVE. ACFT GROUNDED. FOUND TEMP CONTROLLER NR 2 TCV FLIGHT DECK FAULT ON PREVIOUS LEG. RAN BITE CHECK, FAULT CLEARED. CLEANED FLIGHT DECK AIR FILTER. RAN PACKS FOR 30 MINUTES. RAN BITE CHECK AGAIN, NO FAULTS FOUND.Mar 12, 2017 · N477AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2017030220013Window · faultedDURING CLIMBOUT, FL280, RIGHT SIDE WINDOW OVERHEAT & MASTER CAUTION LIGHTS ILLUMINATED. ACCOMPLISHED QRH, WINDOW WOULD NOT RESET. FOLLOWED QRH AND LEFT WINDOW HEAT SWITCH OFF. ACFT GROUNDED. REMOVED AND REPLACED THE RT SLIDING WINDOW ASSEMBLY IAW AMM 5Mar 2, 2017 · N477AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2017022819970Sliding Window · false indicationLEVEL OFF AT FL 310, RECEIVED A MASTER CAUTION ANTI-ICE RIGHT SIDE WINDOW OVERHEAT LIGHT. RAN WINDOW OVERHEAT QRH, LET WINDOW COOL FOR 5 MINUTES. OVERHEAT LIGHT CAME ON AGAIN WHEN THE SWITCH WAS TURNED ON. FOLLOWED QRH PROCEDURE AND TURNED OFF. ACFT GROUNDED.Feb 28, 2017 · N477AS · Boeing 737990ER · Flight Compartment WindowsSDR ASAA2017022619948Wire · failedAT CRUISE R2 WINDSHIELD OVERHEAT LIGHT ILLUMINATED, PERFORMED QRH CHECKLIST, LIGHT REMAINED OUT. ACFT GROUNDED. NUMEROUS FAULT FOR SENSOR ON WHCU BITE. RESISTANCE CHECKED FOR WINDOW COLD & EXTENDED HEAT APPLIED SHOW SAME VALUE WITHIN LIMITS, IAW AMM 30-41-21Feb 26, 2017 · N477AS · Boeing 737990ER · Ice/Rain Protection System WiringSDR ASAA2017022319928Warning Light · false activationRIGHT WINDOW OVERHEAT LIGHT ILLUMINATED WHILE CLIMBING THROUGH 30,000FT. RAN THE CHECKLIST, TURNED OFF SWITCH FOR 5 MINUTES AND TURNED BACK ON, OVERHEAT LIGHT ILLUMINATED AGAIN. TURNED SWITCH OFF FOR REMAINDER OF FLIGHT. ACFT GROUNDED. TURNED RT WINDOW HEAT Feb 23, 2017 · N477AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2017020619717Control Panel · faultyALTITUDE WINDOW DISPLAY HAS SEVERAL ANOMALIES. IT APPEARS THE IS A "MINUS" SIGN IN FRONT OF THE ALTITUDE. GROUNDED - YES. CONFIRMED ALTITUDE WINDOW DISPLAY IS DISPLAYING INCORRECT. REPLACED MCP AND RESET 9 C/B'S. OPS TEST NML. REF B737-900 AMM 22-11-34. ALL TEFeb 6, 2017 · N477AS · Boeing 737990ER · Autopilot SystemSDR ASAA2017011519360Circuit Breaker · trippedAUTO PILOT B INOPERATIVE, WOULD NOT ENGAGE. CIRCUIT BREAKER P6-2 B4 TRIPPED. ACFT GROUNDED. DIGITAL FLIGHT CONTROL SYSTEM (DFCS) BITE PROCEDURE IAW AMM 22-11-00. NO AUTO PILOT DISCONNECT FAULTS FOUND. DUE TO AFCS SYSTEM B ENGAGE INTERLOCK CIRCUIT BREAKER FOJan 15, 2017 · N477AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016120418928Satcom · lockedSATCOM LOCK-UP. ACFT GROUNDED. ACCOMPLISHED RESET PROCEDURE PER QRH. SATCOM OPS RESTORED NORMAL.Dec 4, 2016 · N477AS · Boeing 737990ER · Communications SystemSDR ASAA2016112018767Warning Light · false activationDURING APU START THE APU FAULT LIGHT ILLUMINATED. ACFT GROUNDED. FOUND FAULT 49-41254 WHILE PERFORMING APU BITE, IAW FIM 49-40 TASK 821. CHECK APU BITE CURRENT STATUS FOR FAULT. FAULT NOT FOUND UNDER CURRENT STATUS, IAW FIM TASK 49-40 821, FAULT INTERMITTENTNov 20, 2016 · N477AS · Boeing 737990ER · Airborne Auxiliary Power Unit (APU) SystemSDR ASAA2016102018434Warning Flag · false activationCAPTAIN`S FLIGHT DISPLAY FLAG SHOWED AT POWER TRANSFER. ACFT GROUNDED. VERIFIED, DFCS SHOWS CHA UNAVAILABLE, CYCLED FCC DC C/B P18-1 PANEL. FCC A CH RESTORED, F/D FLAG DISAPPEARED. ACCOMPLISHED LRU REPLACEMENT TEST FOR FCC A IAW AMM 22-11-33 TEST PASSED.Oct 20, 2016 · N477AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016100118153Control Valve · faultedDURING MASTER CAUTION RECALL, AFT CABIN ZONE TEMP LIGHT ILLUMINATED. ACFT GROUNDED. LT PACK ZONE TEMP CONTROLLER BITE TEST IAW AMM TASK 21-61-00-700-806-002 SHOWS "AFT CABIN TRIM VALVE ZONE TCV (V145) FAIL. REMOVED AND REPLACED AFT CABIN ZONE TRIM VALVE IAW AOct 1, 2016 · N477AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016093018156Warning Light · illuminatedAFT CABIN ZONE TEMP LIGHT ILLUMINATED DURING MASTER RECALL & EXTINGUISHED WITH MASTER RECALL RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST IAW AMM 21-61-00, NR 1 TEMP CONTROLLER SHOWS PREVIOUS FLIGHT "ZONE TRIM VALVE" FAULT. RAN "Sep 30, 2016 · N477AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016092418119Light · inoperativeRIGHT FORWARD WINDOW HEAT LIGHT WILL NOT ILLUMINATE. ACFT GROUNDED. PERFORMED WINDOW OVERHEAT TEST TWICE, OPS CHECKED NORMAL BOTH TIMES. CHECKED WINDOW OVERHEAT BOX, NO DEFECTS. WINDOW OPS CHECKED NORMAL, OK FOR SERVICE.Sep 24, 2016 · N477AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
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