N435AS

Service difficulty reports · 296

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 = 'N435AS' 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 ASAA2020041032628Control Valve · failedRIGHT PACK ILLUMINATED ON RECALL. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMPERATURE CONTROLLER BITE PER B737-900 AMM 21-61-00-700-806-002 #2 CNTRLR FAULTED RH PACK TCV. REMOVED AND REPLACED RH PACK TCV PER AMM 21-51-10. OPS CHECKS AND LEAK CHECKS GOOD.Apr 8, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020022873308Fmc · malfunctionedLEFT FMC VTK FLAG APPEARED. LOST LEFT FMC SWITCHED TO RT FMC ONLY FOR NORMAL OPS. AFTER 1 MINUTE PLACED FMC SWITCH BACK TO NORMAL. OPS NORMAL FOR REMAINDER OF FLIGHT. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 & NO FAULTS FOUND. GROUND FUNCTIONAL CKFeb 27, 2020 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020021203150Warning Message · false activationCONT CAB ZONE TEMP ILLUMINATES ON RECAL LT EXTINGUISHES W/MASTER CAUTION RESET. GROUNDED - YES. CLEANED CABIN TEMP SENSOR ASSY FILTER REF B737-900 AMM 21-26-06. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE REF AMM 21-61-00 OPS CHECK NORMAL. ACCOMPLISHED CABIN TFeb 10, 2020 · N435AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020021053116Actuator · inoperativeREF L/P 11922871, DURING BITE VERIFY OF PZTC ( R/H) SRADA EXIT LIGHT ILLUMINATED. DURING THE TEST THE EXIT SRADA REMAINED IN THE CLOSED POSITION. REF B737-800 FIM 21-62 TASK 854. CONFIRMED 28VDC BETWEEN PIN 4 AND 16 OF CONNECTOR D14398. GROUNDED - YES. REMOVEDFeb 5, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020020513051Acm · damagedRIGHT PACK LIGHT ILLUMINATED FOR OVERHEAT CONDITION. GROUNDED - YES. RIGHT PACK TRIP DURING GROUND OPERATION. DETERMINED 390 DEGREE COMPRESSOR DISCHARGE SWITCH DETECTED OVERHEAT. WITH BOROSCOPE CONFIRMED AIR CYCLE MACHINE DAMAGE. REPLACED THE R/H A/C PACK ACM Feb 1, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020020393028Actuator · inoperativeDURING CRUISE FLIGHT @FL340 RIGHT PACK LIGHT ILLUMINATED. ACCOMPLISHED PACK LIGHT QRH AND RIGHT PACK LIGHT EXTINGUISHED WITH HIGHER TEMP SELECTED & TRIP RESET (THE RIGHT PACK LIGHT DIDN'T EXTINGUISH WHEN MASTER CAUTION SYSTEM WAS PRESSED TO RESET INITIALLY). GJan 29, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020013193229Control Valve · overheatedWHILE ACCOMPLISHING BITE CHECK ON TEMP CONTROLLERS, FOUND THE LEFT PACK INLET FAULT, LEFT RAM AIR DOOR BINDING AND STICKING IN THE CLOSED POSITION. FOUND THE TCV 1 V139 OVERHEATED. GROUNDED - YES. REMOVED & REPLACED THE TCV 1 IAW AMM 21-51-10. ACCOMPLISHJan 29, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020013082017Warning Light · false activationCLIMBING THROUGH FL360 RT PACK ILLUMINATED TRIP RESET WOULD NOT TURN OFF LIGHT. GROUNDED - YES. ACCOMPLISHED FIM 21-53 TASK 802, RT PACK LIGHT EXTINGUISHED AFTER PUSHING RESET/TRIP AT FLIGHT DECK. DETERMINED TO BE INTERMITTENT FAULT.Jan 28, 2020 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2020012743969Lens · detachedLIGHT COVER MISSING AT THE L2 DOOR EXIT SIGN. GROUNDED - YES. INSTALLED THE EMERGENCY EXIT SIGN LENS IAW AMM 33-51-01. OPS CHECKED GOOD. AIRCRAFT OK FOR SERVICE.Jan 24, 2020 · N435AS · Boeing 737990ER · Emergency LightingSDR ASAA2019112533433Fmc · malfunctionedDUAL FMC FAILURE WITH VTK FLAGS. BOTH FMC LEFT AND RIGHT CAME BACK ON UNDER 1 MINUTE OUTSIDE OF ETOPS AIRSPACE. GROUNDED - YES. PERFORMED FMC BITE NO CURRENT FAULTS NOTED. PERFORMED B737-900 FIM 34-61 TASK 836. RESET POWER TO FMC'S DETERMINED TO BE INTERMITTENNov 23, 2019 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019112081376Warning Light · false activationCONTROL CABIN ZONE TEMP LIGHT ILLUMINATED UPON RECALL. GROUNDED - YES. FOUND FLT DECK TRIM VALVE FAULT ON THE TRIM ZONE CONT. RAN BITE TEST REF B737-900 AMM 21-61-00 SYSTEM OP CHECKS GOOD NO DEFECTS NOTED AT THIS TIME AS PRECAUTION CLEANED FLT DECK FILTER SYSTNov 18, 2019 · N435AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019111861351Warning Light · false activationCONT CABIN ZONE TEMP LT, ILLUMINATES ON RECALL TEMP CONTROL KNOB STILL CONTROLS CONT CABIN TEMP BOTH HOT AND COLD. GROUNDED - YES. CONT CABIN ZONE TEMP BITE TEST ACCOMPLISHED. B737-900 AMM REF 21-62 TASK 801. VERIFY GREEN LIGHT ON NO MX-ACTION REQUIRED.Nov 16, 2019 · N435AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019101651020Wire Harness · damagedFOUND DAMAGE TO BRAIDING OF MW0325 AND MW0326 CORE FIRE DETECTION HARNESSES. GROUNDED - YES. REMOVED AND REPLACED MW0325 AND MW0326 CORE FIRE DETECTION HARNESSES, INSTALLATION TEST OK, REF AMM 26-11-02. OPENED, TAGGED, AND RESET 2CB'S. ETOPS SIGNIFICANT SYSTEMOct 15, 2019 · N435AS · Boeing 737990ER · Fire Protection System WiringSDR ASAA2019100753935Adiru · faultedSHORTLY AFTER TAKEOFF THE LEFT IRS FAILED COMPLETELY WITHOUT ANY WARNING ANNUNCIATIONS. GROUNDED - YES. AIR TURNBACK. DIVERSION TIME 62 MINUTES - COULD NOT DUPLICATE FAULT. ADIRS BITE REF B737-900 FIM 34-21 TASK 801, SHOWS NO CURRENT FAULTS. CDS BITE REF FIM 3Oct 5, 2019 · N435AS · Boeing 737990ER · Attitude and Direction Data SystemSDR ASAA2019092730846Circuit Breaker · trippedIN FLIGHT LEFT FORWARD WINDOW OVERHEAT LIGHT ACCOMPLISHED QRM PROCEDURE FOR WINDOW OVERHEAT, WINDOW OVERHEAT LIGHT ILLUMINATED AGAIN AFTER RESET ATTEMPT. GROUNDED - YES. FOUND CB OUT P6-11 (B9) WINDOW HEAT POWER LEFT FRONT OPENED RESET CB C/W OPS TEST OF WINDOSep 27, 2019 · N435AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019082753509Valve · leakingNR 2 ENG FUEL LEAK, . FOUND BROKEN HPTCC VALVE DRAIN LINE AT "B" NUT CONNECTION. GROUNDED - YES. REMOVED AND REPLACED HPTACC VLV PER B737-900 AMM 75-21-01-000-801-F00 AND DRAIN MANIFOLD ABUTMENT LINE AMM 20-00-00. PERFORMED NECESSARY TESTS UNDER PROCEDURE AMM Aug 25, 2019 · N435AS · Boeing 737990ER · Engine Fuel DistributionSDR ASAA20190730235Hmu · failedENG VALVE CLOSED LIGHT DID NOT ILLUMINATE BRIGHT BLUE FROM DIM WHEN START LEVER WAS RAISED TO IDLE; INSTEAD LIGHT IMMEDIATELY EXTINGUISHED. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE HMU REF ASA T/C N8473000 &1. IDLE-POWER LEAK CHECK, GOOD. NO LEAK NOTED. Jul 24, 2019 · N435AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2019071530077Warning System · false activationRIGHT PACK LIGHT ILLUMINATES ON RECALL AFTER PUSH. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE AMM 21-61-00 GRD VERIFICATION SUCCESSFUL OPS CHECK NORMAL.Jul 15, 2019 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019071530072Fmc · intermittentL FMC FAILED 3 TIMES IN CRUISE FLIGHT RESET TWO TIMES ON ITS OWN AND 1 TIME VIA THE CHECKLIST. GROUNDED - YES. DUE TO FAULT HIST, REMOVED AND REPLACED LEFT FMCS COMPUTER IAW B737-AMM 34-61-02/401. FMCS OPS TESTED NORMAL.Jul 15, 2019 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019070729970Connector · disconnectedENGINE #2 HAS A SHORT TIME FAULT 73-11272 THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE, DEFERRED PER TASK CARD 78273000. GROUNDED - YES. ACCOMPLISHED FIM 73-27 TASK 804. FOUND DP0702 DISCONNECTED. RECONNECTED DP0702. ACCOMPLISHED ENGINE RUN TEST 13.Jul 7, 2019 · N435AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA2019062069735Wire Harness · failed#2 ENGINE FUEL FILTER BYPASS LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. WHILE PERFORMING B737-900 FIM 73-05 TASK 801 FOUND FUEL FILTER DIFFERENTIAL PRESSURE SWITCH ELECTRICAL CONNECTOR LOOSE. RECONNECTED REF B737-900 AMM 73-34-01. PERFORMED IDLE-POWER LEJun 16, 2019 · N435AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA201906139673Warning Light · false activationRIGHT HAND PACK LIGHT REMAINED ILLUMINATED AFTER RECALL SWITCH PUSHED QRH CHECKLIST ACCOMPLISHED AND PACK LIGHT EXTINGUISHED WITH RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONT. BITE TEST REF B737-900 AMM 21-61-00 AND AS PRECAUTION PULED AND RECYCLED PACJun 10, 2019 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA201906129675Warning Message · false activationDURING CRUISE THE LEFT FMC FAULTED AND VTK WAS DISPLAYED ON CAPTAIN NAV DISPLAY. QRH CORRECTED ISSUE, BUT IT RECURRED WITH IN 5 MINUTES. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 801, NO FAULTS NOTED AT THIS TIME.Jun 10, 2019 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019061089635Warning Light · false activationON MASTER RECALL, RH PACK LIGHT ON, RESETS ON MASTER CAUTION RESET. GROUNDED - YES. REF B737-900 AMM TASK 21-61-00-700-806-002, RIGHT PZTC BITE PREV FLT LOGGED "SRADA EXIT" FAULT. SRADA LRU BITE SHOWS NO FAULTS. RIGHT PZTC VERIFY BITE TESTED GOOD W/O FAULTS. VJun 8, 2019 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019060329555Fmc · failedLEFT FMC FAILED INTERMITTENTLY, FOUR OR FIVE TIMES DURING CRUISE. IT CORRECTED ITSELF WITHIN ONE MINUTE THE FIRST FEW TIMES,THEN PERSISTED. RAN QRH PROCEDURE, RESTORED NORMAL OPS. GROUNDED - YES. ACCOMPLISHED FMC BITE PROCEDURE WITH NO FAULTS NOTED REF B737-90May 31, 2019 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019051729372Bearing · defectiveON CLIMB OUT, PASSING FL180, LEFT "PACK" LIGHT ILLUMINATED. FOLLOWED THE QRH AND TURNED ALL TEMP SELECTORS WARMER AND PUSHED THE "TRIP RESET" BUTTONS. THE "PACK" LIGHT WENT OUT MOMENTARILY BUT CAME BACK ON. FOLLOWED QRH PROCEDURES AND CLOSED THE ISOLATION VALVMay 17, 2019 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019041732900Frame · corrodedAFT CARGO R/H SIDEWALL FRAME CAP AT STA 727L, RBL 21 CORRODED. GROUNDED - YES. REMOVED AND REPLACED AFT CARGO R/H SIDEWALL FRAME SPLICE CAP AT STA 727L RBL 21 IAW B737-900 ER SRM 51-40-02 FABRICATED FRAME SPLICE MATERIAL ID # 7075-0-.071 CLAD PO# 878050.2 IAW Apr 3, 2019 · N435AS · Boeing 737990ER · Fuselage Main, FrameSDR ASAA2019041639989Frame · corrodedAFT CARGO R/H SIDEWALL FRAME CAP AT STA 727I, RBL 21 CORRODED. GROUNDED - YES. REMOVED AND REPLACED AFT CARGO R/H SIDEWALL FRAME CAP P/N # 146A130008 P.O. 942051.1 AT STA 727I RBL 21 IAW DWG # 146A1243 REV. - AND B-737-900ER SRM 51-40-02.Apr 3, 2019 · N435AS · Boeing 737990ER · Fuselage Main, FrameSDR ASAA2019041762901Transition Panel · corrodedAFT CARGO PIT, STA 767-790 RIGHT HAND TRANSITION HAS MANY AREAS OF SUSPECTED CORROSION ON UPPER AND LOWER SURFACES. GROUNDED - YES. BLENDED AND EVALUATED CORROSION ON AFT CARGO R/H TRANSITION STA 767-790. FOUND DAMAGE NOT TO BE WITHIN LIMITS IAW B737-900ER SRMMar 26, 2019 · N435AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2019041768999Transition Panel · corrodedAFT CARGO PIT, STA 727I+8 - 767 RIGHT HAND TRANSITION HAS MANY AREAS OF SUSPECTED CORROSION ON UPPER AND LOWER SURFACES. GROUNDED - YES. REMOVED TRANSITION PANEL IAW B737-900 SRM 51-40-02, FABRICATED NEW TRANSITION PANEL FROM BAC 1496-377 PO# 899808.1 ALODINEDMar 26, 2019 · N435AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2019031428647Switchpack · failedENG. 2 REVERSER LIGHT REMAINED ILLUMINATED AFTER LANDING. GROUNDED - YES. REF FIM 78-32 TASK 807, RANG OUT S5 OF RT A/T SW PACK. FOUND TO BE BAD. REF AMM 76-11-07. REMOVED/REPLACED RT A/T SW PACK ASSY. ALL TEST GOOD. T/R OPS NML NUMEROUS TIMES REF AMM 78-31-00Mar 14, 2019 · N435AS · Boeing 737990ER · Engine ControlsSDR ASAA2019020628105Controller · faultedWITH RECALL PRESS TO TEST, RIGHT PACK REMAINED ILLUMINATED. LIGHT GOES OUT W/ RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST. NR 1 CONTROLLER BITE TEST PASSED NO DEFECTS NOTED. NR 2 CONTROLLER SHOWED 1 FAULT SRADA EXIT ACTUATOR WAS ABLFeb 6, 2019 · N435AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA201902048018Fmc · malfunctioned(VTK) FMC #1 FAILURE. AUTOMATICALLY FIXED ITSELF AFTER A MINUTE OR TWO, NO CORRECTIVE ACTIONS TAKEN. NO FURTHER PROBLEMS FOR REMAINDER OF FLIGHT. GROUNDED - YES. #1 FLIGHT MANAGEMENT COMPUTER SYSTEM CHECKS GOOD REF B737-900 AMM TASK 34-61-00-710-801.Feb 2, 2019 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019013128025Warning System · activatedNR 2 ENG " LONG TIME FAULT" THE START LEVER SIGNALS DISAGREE, MSG 76-21362 DEFERRED PER TASK CARD. GROUNDED - YES. ON DEFERRAL.Jan 31, 2019 · N435AS · Boeing 737990ER · Power LeverSDR ASAA2019011227771Brake · intermittentREPORTS OF NR 1 ENGINE FAIL MESSAGE AT ENGINE SHUTDOWN. GROUNDED - YES. REF AMM 76-11-10, REMOVED/REPLACED NR 1 ENGINE START BRAKE ASSY. ALL OPS CHKS. PERFORMED NR 1 AND NR 2 ENGINE IDLE RUN - CHK GOOD. GROUND VERIFICATION CHECK GOOD.Jan 12, 2019 · N435AS · Boeing 737990ER · Engine ControlsSDR ASAA2018123177619Cdu · malfunctionedRIGHT CDU FAILED DURING TAXI WHEN #2 ENGINE WAS SHUT DOWN. NORMAL OPS RESTORED AFTER A SHORT TIME. GROUNDED - YES. FMC L/H & R/H LOGGED CDU-R FAULT. ACCOMPLISHED B737-900 FIM 34-61 TASK 804 CONTROL DISPLAY UNIT BLANKS. NO FAULTS.Dec 27, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018123177618Fmc · malfunctionedBOTH FMC'S FAILED DURING DESCENT. VTK DISPLAYED ON CAPT'S DISPLAY. NORMAL OPS RESTORED AFTER ABOUT 30 SECONDS. QRC PROCEDURE WAS NOT USED. GROUNDED - YES. FMC R LOGGED FMC-L PRES POS LAT RATE FAULT LEG 1 & FMC LEFT & RIGHT LOGGED CDU-R GRD FAULT. COMPLETED B73Dec 27, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018122877592Transceiver · malfunctionedSELECTING HF2 ON THE RTP, FAIL SHOWS IN BOTH WINDOWS. GROUNDED - YES. REBOOTED #2 HF XCVR, OPS NORMAL REF B737-900 FIM 23-11 TASK 801.Dec 27, 2018 · N435AS · Boeing 737990ER · HF Communications SystemSDR ASAA2018122427535Switch · failedPSEU LIGHT CAME ON AFTER LANDING. GROUNDED - YES. REMOVED R/H A/T SWITCH PACK ASSY REF B737-900 AMM 76-11-07-020-802-F00. INSTALLED NEW R/H A/T SWITCH PACK ASSY PER AMM TASK 76-11-07-400-802-F00, OPERATIONAL CHECK GOOD. OPENED, COLLARD AND RESET 21 C/B.Dec 22, 2018 · N435AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA201811086754Connector · detached#2 FUEL FILTER BYPASS LIGHT AFTER LANDING. EXTINGUISHED ON ENGINE SHUTDOWN. GROUNDED - YES. C/W B737-900 FIM 73-05 TASK 801, FOUND FAULT 73-31072. FOUND CONNECTOR OFF FUEL FILTER DIFFERENTIAL PRESSURE SWITCH. SECURED CONNECTOR REF FIM 73-05 TASK 801 AND C/W RENov 7, 2018 · N435AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA2018102726660Fmc · failedFOLLOW-UP TO LT FMC FAIL. GROUNDED - YES. REMOVED AND REPLACED LEFT FMC COMPUTER REF AMM 34-61-02, OPS CHECK NORMAL.Oct 27, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018102926650Warning System · false activationAFTER LANDING, MASTER CAUTION AND PSEU LIGHT ILLUMINATED LIGHT WENT OUT 30 SECS LATER AND DID NOT RELIGHT. GROUNDED - YES. ACCOMPLISHED PSEU BITE PROCEDURE IAW FIM 32-09 TASK 801. HISTORY FAULT MESSAGE 32-62102. SYSTEM RESET AND TEST - NO EXISTING FAULTS.Oct 27, 2018 · N435AS · Boeing 737990ER · Landing Gear Position and WarningSDR ASAA2018102926635Unknown · malfunctionedIN CRUISE AT FL 350, BOTH FMC P/RST CAUTION LIGHTS CAME ON, LDG ALT SHOWED ON CAPT OUTBD DU, WS SHOWED ON F/O OUTBD DU, LNAV AND VNAV WERE LOST, CAPT FMC WITH LSAT PROMPT REMOVED. THESE SYMPTOMS LASTED 15 TO 20 SECS AND THEY RESET THEMSELVES TO NORMAL DISPLAY.Oct 27, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018102926639Regulator · leakingNR 1 ENG BLEED AIR DUCT PRESSURE LOW (30 PSI AT ALL POWER SETTINGS). GROUNDED - YES. ACCOMPLISHED NR 1 ENG BLEED AIR SYS HEALTH CHECK REF ASA T/C NG-36WC-00001. FOUND NR 1 ENG BAR LEAKING, NO OTHER FAULTS FOUND. REMOVED & REPLACED NR 1 ENG BAR REF AMM 36-11-03Oct 26, 2018 · N435AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2018100526415Seal · out of limitsWHILE ACCOMPLISHING T/C 78349000 FOUND SIGMA SEAL HEIGHT FROM THE BOTTOM TO THE TOP AT 1.15". HEIGHT IS OUT OF LIMITS. GROUNDED - YES. REMOVED AND REPLACE SIGMA SEAL REF AMM 49-15-11.Oct 5, 2018 · N435AS · Boeing 737990ER · APU Cowling/ContainmentSDR ASAA2018100826412Warning System · false activationLEFT FMC FAIL. GROUNDED - YES. PERFORMED FIM 34-61 TASK 801. NO FAULTS FOUND. PERFORMED INFLT FAULT CHECKS AND FOUND L FMC PGM FAULT. PERFORMED FIM 34-61 TASK 807. TASK STATES IF PGM FAULT IS ONLY FAULT FOUND DO NOT REPLACE FMC. AFTER RESET OF CIRCUIT BREAKERSOct 5, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018100526370Apu · malfunctionedAPU TREND DATA SHOWS CT5ATP TEMP HAD A SUDDEN INCREASE ABOVE THE THRESHOLD 594 DEGREES. GROUNDED - YES. REPLACED APU REF AMM 49-11-00. LK AND OPS CK GOOD. THIS CLEARS TSR 702262. REMOVED APU SN P-10059 AND INSTALLED SN P-11296.Oct 5, 2018 · N435AS · Boeing 737990ER · APU Core EngineSDR ASAA2018100326351Not Reported · malfunctionedNR 1 GENERATOR ONLY POWERS HALF THE BUSES WHEN PUT ONLINE. GROUNDED - YES. BITE TESTED NR 1 GCU REF FIM 24-21-00-810-801. NO FAULTS. BITE TESTED BPCU REF FIM 24-41 TASK 801. NO FAULTS. RAN NR 1 ENGINE AND APPLIED POWER WITH NR 1 ENG GEN ALL BUSES POWERED NORMAOct 3, 2018 · N435AS · Boeing 737990ER · AC Generation SystemSDR ASAA2018092526322Power Unit · failedDURING TAXI TO GATE, STARTED APU. THE APU STARTED BUT NO APU GEN OFF BUS LIGHT ILLUMINATED AND APU GEN VOLTMETER SHOWED ZERO VOLTS. APU GEN INOP. GROUNDED - YES. PERFORMED NORMAL OPERATION OF APU MULTIPLE TIMES PER B737-900 AMM 49-11-00. VOLTAGE AND FREQS WERESep 25, 2018 · N435AS · Boeing 737990ER · APU Start/Ignition SystemSDR ASAA2018091026067Warning System · false activationDURING CRUISE "VTK" "MAP" DISPLAYED ON CAPT ND. SIMULTANOUSLY "LDG ALT" DISPLAYED ON CAPT PFD. PROCEDURE FOR LEFT FMC FAILURE FOLLOWED. GROUNDED - YES. PERFORMED FMC BITE REF FIM 34-61 TASK 801. FOUND NO CURRENT FAULTS OF SENSORS. THIS FMC LOGGED A "PGM FAULT"Sep 8, 2018 · N435AS · Boeing 737990ER · Flight Management Computing Hardware System
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