N428AS

Service difficulty reports · 250

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 = 'N428AS' 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 ASAA2023011341497Modulating Valve · faultedLEFT PACK LIGHT ILLUMINATED ON RECALL EXTINGUISHED WITH MASTER CAUTION RESET. GROUNDED - YES. REPLACED TRIM CONTROL VALVE PER B737-900 AMM 21-51-10.Jan 10, 2023 · N428AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2023010841475Fmc · fault messageAT FL300 APPROXIMATELY 45 MINUTES INTO FLIGHT, AUTOMATION REVERTED TO 'CWS R' FOLLOWED SHORTLY BY A 'VTK' MESSAGE ON CAPTAINS ND. BOTH MCDU'S DEFAULTED TO MENU, NEITHER ONE DISPLAYING 'FMC' OPTION AT 1L. WE SELECTED HDG AND ALT HOLD, BUT BEFORE WE COULD TAKE AJan 8, 2023 · N428AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023010441410Fmc · intermittentAFTER LANDING BOTH FMC'S RESET FOLLOWED BY AN FMC DISAGREE MESSAGE ON CA MCDU MINUTES LATER AND EXTINGUISHED SHORTLY AFTER. GROUNDED - YES. NO HISTORY- COULD NOT DUPLICATE. PERFORMED B737-900 FIM 34-61 TASK 835 FMC'S NORMAL GRN VERIFICATION GOOD.Jan 4, 2023 · N428AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023010241378Acm · faultedRIGHT PACK TEMPERATURE RAPIDLY CLIMBED TO 90 DEGREES WHEN TURNED ON. KEPT FROM OVER TEMP BY TURNING OFF. GROUNDED - YES. REMOVED AND REPLACED RH ACM IN REF TO B737-900 AMM 21-51-04-/401. PERFORMED ACM INSTALL TEST REF AMM 21-51-04-860-025-002 LEAK CHECK GOOD. Jan 2, 2023 · N428AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2023010241321Modulating Valve · faultedRT PACK LIGHT ILLUMINATED. RT PACK TEMP IS HIGH. GROUNDED - YES. FOUND R/H PACK TEMP INOP. REPLACED PACK TEMP BULB T489, AND TEMP CONTROL VALVE. ALL OPS NML. GROUND VERIFICATON SATISFACTORY. REF AMM 21-51-60 & 21-51-10.Jan 2, 2023 · N428AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022123041353Oil Filter · leakingDURING APU OIL SERVICE FOUND APU OIL FILTER LEAKING. GROUNDED - YES. REMOVED & REPLACED APU LUBE FILTER HOUSING & ELEMENT LK & OPS GOOD REF B737-900 AMM 49-91-12.Dec 30, 2022 · N428AS · Boeing 737990ER · APU Oil SystemSDR ASAA2022122041198Starter Unit · leaking#2 ENGINE STARTER HAS EVIDENCE OF OIL LEAKING. GROUNDED - YES. REMOVED AND REPLACED #2 ENG STARTER REF B737-900 AMM 80-11-01. OPS AND LEAK CHECK GOOD.Dec 20, 2022 · N428AS · Boeing 737990ER · Engine CrankingSDR ASAA2022121341168Module · faultedON TAXI-IN WITH APU RUNNING AND ELECTRIC AVAILABLE APU GENERATORS WOULD NOT COME ONLINE. APU GEN VOLTAGE READ 0 (ZERO). GROUNDED - YES. OPERATED APU GERATION SYSTEM WITH NO DISCREPANCIES NOTED. CYCLED POWER SEVERAL TIMES BETWEEN APU AND ENGINES, ALL OPS NML. RDec 13, 2022 · N428AS · Boeing 737990ER · AC Generation SystemSDR ASAA2022121141130Hmu · leaking#2 ENGINE HMU PAD DRAIN FOUND LEAKING AT 12 DPM DURING LEAK CHECK AFTER ENGINE INSTALLATION. GROUNDED - YES. REMOVED #2 ENG HMU REF ASA T/C N8473000, INSTALLED REPLACEMENT #2 ENGINE HMU, LEAK CHECK AND OPS CHECKS GOOD REF. T/C N8473001. ORIG SUB DATE: 12/15/2Dec 11, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022120941085Generator · inoperativeAPU GENERATOR FELL OFF LINE PRIOR TO PUSHBACK. GROUNDED - YES. REMOVED AND REPLACED APU GENERATOR WITH REFERENCE B737-900 AMM 49-41-21-400-801 STEP (H) (7C). OPS CHECK GOOD AND NO LEAK FOUND WITH REF AMM 49-41-21-710-001.Dec 9, 2022 · N428AS · Boeing 737990ER · AC Generation SystemSDR ASAA2022112840971Insert · defective#2 ENGINE LWR OUTBD FAN DUCT PANEL HAS 1EA BAD INSERT. GROUNDED - YES. REMOVED LWR OUTBD PNL. REF B737-900 AMM 72-23-07 ASA 52800. REMOVED AND REPLACED 1EA BAD INSERT WITH NEW REF CFM SPM 70-42-13 REPAIR 1 ASA 74772. INSTALLED #2 ENG LOWER OUTBOARD FAN DUCT PANov 28, 2022 · N428AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022111140741Hf Comm · malfunctionedHF 2 RADIO DISPLAY FAIL. GROUNDED - YES. PERFORMED BITE TEST OF HF 2 IAW B737-900 AMM 23-11-00, OPS CHK GOOD.Nov 11, 2022 · N428AS · Boeing 737990ER · HF Communications SystemSDR ASAA2022103140567Pad · missingREF ASA TASK CARD 78273000 FOUND #2 ENGINE SHORT TIME FAULT CODE 75-20452 AND CODE 75-10452 (REF ASA LP 60387878). GROUNDED - YES. PERFORMED GVI IAW B737-900 AMM 75-32-02 & 75-32-03. FINDINGS WERE ALL VBV RING GUIDE PADS WERE MISSING. NO OTHER DEFECTS NOTED.Oct 31, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022102140447Actuator · faultyFOUND FMC SHORT TIME FAULTS 75-10452 AND 75-20452, VBV POSITION SIGNALS DISAGREE. GROUNDED - YES. REMOVED AND REPLACED #2 ENG L/H VBV ACTUATOR REF B737-900 AMM 75-32-02. OPS CHECK, LEAK CHECK GOOD.Oct 21, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022101240309Hmu · faulty#2 ENG FAULT CODE 75-10452, "THE VBV POSITION SIGNALS DISAGREE", SHORT TIME FAULT, FOUND WHILE PERFORMING ASA T/C 78273000. GROUNDED - YES. REF ASA W/O 1927523, ASA T/C N8473000 AND ASA T/C N8473001 FOR REMOVAL AND INSTALLATION OF THE #2 ENG HMU. NO FAULTS AFTOct 12, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022101240308Hmu · faulty#2 ENG MAINTENANCE FAULT CODE 75-20452, "THE VBV POSITION SIGNALS DISAGREE", SHORT TIME FAULT, FOUND WHILE PERFORMING T/C 78273000. GROUNDED - YES. REF ASA W/O 1927523, ASA T/C N8473000 AND ASA T/C N8473001 FOR REMOVAL AND INSTALLATION OF THE #2 ENG HMU. NO FAOct 12, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022100540211Harness · faultyWHILE ACCOMPLISHING ASA T/C 78273000, FOUND FAULT CODE 75-30452 VBV POSITION SIGNALS DISAGREE (SHORT TERM) ON ENG #2. GROUNDED - YES. REMOVED AND REPLACED J10 HARNESS. REF B737-900 AMM 73-21-06.Oct 5, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022092840123Wire Harness · damagedENG 2 FIRE DETECTION LOOP B IS INOP. GROUNDED - YES. REPLACED CORE FIRE DETECTION HARNESS MW0326 ENG #2 REF B737-900 AMM 26-11-02-400-802. OPERATIONAL TEST OK REF AMM 26-11-00-710-801.Sep 28, 2022 · N428AS · Boeing 737990ER · Fire Protection System WiringSDR ASAA2022092640146Wire Harness · damagedACCOMPLISHING ASA T/C 78273000 THE FOLLOWING FAULT MSG FOR ENG # 2 WAS SEEN MSG NBR: 75-20452 AND MSG NBR: 75-10452 (SHORT TIME) THE VBV POSITION SIGNALS DISAGREE. FLT. LEG 1-X; 2-X; 3-X. GROUNDED - YES. REMOVED AND REPLACED #2 ENG J9 HARNESS REF B737-900 AMM Sep 26, 2022 · N428AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA2022091740059Vbv · bindingMTX MSG SHORT TIME FAULT CODE 75-10452 "THE VBV POSITION SIGNALS DISAGREE" FOUND WHILE PERFORMING ASA TASK CARD 78273000 ON ENGINE #2. GROUNDED - YES. REMOVED AND REPLACED OB VSV ACTUATOR REF B737-900 AMM 75-32-02-400-802.Sep 17, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022090839885Harness · noneREF ASA W.O. 1918336 ASA DEFECT 60414918. FOUND #2 ENG MW0311 HARNESS CHAFFED. GROUNDED - YES. REPLACED #2 ENG MW0311 HARNESS REF B737-900 AMM 73-21-06.Sep 8, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022090439878Harness · faultyWHILE PERFORMING ASA TASK CARD 78273000 ENGINE 2 FAULT CODE 75-20452 THE VBV POSITION SIGNALS DISAGREE SHORT TIME FAULT APPEARED DEFERRED PER T/C 78273000. GROUNDED - YES. VERIFIED FAULT CODE 75-20452 STILL SHOWING INTERMITTENT LAST 10 FLT LEGS. PER PREVIOUS HSep 4, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022090439877None · noneWHILE PERFORMING ASA TASK CARD 78273000 ENGINE 2 FAULT CODE 75-10452 THE VBV POSITION SIGNALS DISAGREE. SHORT TERM FAULT APPEARED. DEFERRED PER T/C 78273000. GROUNDED - YES. ON DEFERRAL.Sep 4, 2022 · N428AS · Boeing 737 · Fuel Controlling SystemSDR ASAA2022082639686Cdu · failedF/O MCDU SCREEN BLANKED WITH NO OTHER MESSAGES, CAME BACK ON AFTER SOME BIT, TEST AUTOMATICALLY PERFORMED. NO LOSS OF DATA OR LNAV/VNAV @ FL330 80 MILES SE OF AYZOL. GROUNDED - YES. UNIT BITE TEST GOOD. NO HISTORY.Aug 26, 2022 · N428AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022082539679Unknown · faultyACCOMP ASA T/C 78273000. RECORDED FAULT CODE 75-30452 THE VBV POSITION SIGNALS DISAGREE #2 ENG SHORT TIME FAULT. GROUNDED - YES. C/W B737-900 FIM 75-32 TASK 803, MEASURE THE RESISTANCE BETWEEN THE VBV ACTUATOR & EEC DP1010 AND DP0909 (VBV VERSION 2) ALL RESISTAug 25, 2022 · N428AS · Boeing 737 · Compressor Bleed ControlSDR ASAA2022082339627Starter · faultyAFTER #2 ENG START AND AFTER AC PANEL CONFIGURED TO START #1 ENG THE DURING #1 ENG START N2 VERY SLOW TO REACT 25% NORMAL START AFTER THAT ALL OTHER INDICATIONS NORMAL. PANEL CONFIG FOR #1 ENG START LH PACK OFF, ISO VALVE CLOSED, RH PACK AUTO, BOTH ENG BLEED SAug 23, 2022 · N428AS · Boeing 737990ER · Engine CrankingSDR ASAA2022082339616Control Panel · faultyMCP BLANK ALL DISPLAYS. GROUNDED - YES. CYCLED A/C POWER OPS CKS GOOD.Aug 23, 2022 · N428AS · Boeing 737990ER · Autopilot SystemSDR ASAA2022081939573Sense Line · brokenWHILE WORKING ASA W/O 1921020/DEFECT ASA LP 60094957: FOUND #2 ENG, HIGH STAGE VALVE LWR BODY DIAPHRAGM - SENSE LINE BROKEN @ VALVE 'B' NUT CONNECT POINT. (BROKEN TUBE). GROUNDED - YES. REPLACED HIGH STAGE VALVE LOWER SENSE LINE/TUBE REF. B737-900 AMM 36-11-06Aug 19, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022081639561Harness · faultedON #2 ENG FOUND FAULT CODE 75-20452 VBV POSITION SIGNALS DISAGREE. SHORT TERM FAULT. DEFERRED PER ASA T/C 78273000. GROUNDED - YES. REMOVED AND REPLACED J10 HARNESS REF B737-900 AMM 73-21-06.Aug 16, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022081639560Harness · faultyON ENG #2 FOUND FAULT CODE 75-10452 VBV POSITION SIGNALS DISAGREE. SHORT TIME FAULT. DEFERRED PER ASA T/C 78273000. GROUNDED - YES. REPLACED J9 HARNESS REF. B737-900 AMM 73-21-06.Aug 16, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022080439407Eec · inoperativeENG #2 HAD FAULT CODE 75-30452. THE VBV POSITION SIGNALS DISAGREE. SHORT TIME 50 FLT HRS DEFERRED PER ASA T/C 78273000. GROUNDED - YES. REF. B737-900 AMM 73-21-60, REMOVED/REPLACED #2 ENGINE EEC.Aug 4, 2022 · N428AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022073039281Lubrication Unit · leakingDURING ENGINE RUN #2, FOUND OIL DRIPPING OUT OF AFT SUMP DRAIN PORT. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE LUBRICATION UNIT REF B737-900 AMM 79-21-01-400-801-F00 STEPS G (1)- (6). PERFORMED IDLE POWER LEAK CHECK ON #2 ENGINE LUBRICATION UNIT REF AMM 7Jul 30, 2022 · N428AS · Boeing 737990ER · Engine Oil Distribution (Airframe Furnished)SDR ASAA2022072639282Actuator · faulty#2 ENG BITE HAD FAULT 75-30452 THE VBV POSITION SIGNALS DISAGREE. SHORT TIME FAULT. DEFERRED PER T/C 78273000. GROUNDED - YES. ACCCOMPLISHED B737-900 FIM 75-32 TASK 803. RESISTANCE AT PIN 1-2 ON VBV-B (LEFT HAND ACTUATOR) READS 343 OHMS -- OVER 20 OHMS HIGH. AJul 26, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022071739157Actuator · faultyWHILE PERFORMING T/C 78273000 FOUND FAULT 75-30452 SHORT TERM FAULT VBV POSITION SIGNAL DISAGREE ON ENG #2. GROUNDED - YES. REMOVED AND REPLACED #2 ENG VBV ACTUATOR REF B737-900 AMM 75-32-02 LEAK AND OPS CHECK GOOD.Jul 17, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022071139028Valve · failedON REPOSITION TAXI, #2 ENGINE WILL NOT START, NO START VALVE LIGHT DURING START. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE START VALVE PER B737-900 AMM 80-11-03, OPS CHECK GOOD AND LEAK CHECK GOOD PER AMM 71-00-00.Jul 11, 2022 · N428AS · Boeing 737990ER · Engine CrankingSDR ASAA2022062338812Vbv · unserviceableDURING ACCOMPLISHMENT OF T/C 78273000 #2 ENG HAS SHORT TIME 50 FLT HOURS FAULT MSG 75-30452. THE VBV POSITION SIGNALS DISAGREE. GROUNDED - YES. ACCOMPLISHED RESISTANCE CHECKS OF VBV ACTUATOR RECEPTACLES DP0908 AND DP1008 VERSION 7074-300 AND 1226400 PER B737-9Jun 23, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022061838733Vbv · false indicationREF T/C 78273000, ENG 2 SHORT TIME FAULT 75-30452. THE VBV POSITION SIGNALS DISAGREE. GROUNDED - YES. PERFORMED BITE CHECK OF FMC CDU ON ENG #2 PER B737-900 AMM 73-21-00 NO ACTIVE FAULTS NOTED.Jun 18, 2022 · N428AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022060138538Cabin Air Sys · fluctuatesWHILE LEVEL AT FL330 CABIN RATE INDICATOR CONTINUOUSLY FLUCTUATES BETWEEN +-200KPM. LH DUCT PRESSURE HOLD STEADY AT 40PSI. RH DUCT PRESSURE CONTINUOUSLY FLUCTUATES BETWEEN 42-46 PSI IN CONJUCTION WITH CABIN RATE INDICATOR. ALL OTHER PRESSURIZATION INDICATIONS Jun 1, 2022 · N428AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022052538499Igniter · failedAFTER PUSHBACK #1 ENGINE WOULD NOT START WITH IGNITION IN "IGN R" POSITION. GROUNDED - YES. REMOVED AND REPLACED R/H IGNITOR PLUG REF B737-900 AMM 74-21-02. REMOVED AND REPLACED R/H IGNITION LEAD REF AMM 74-21-01. PERFORMED IGNITION SYSTEM AUDIBLE TEST, BOTH LMay 25, 2022 · N428AS · Boeing 737990ER · Ignition Harness (Distribution)SDR ASAA2022042238108Regulator · leakingWHILE WORKING ASA TASK CARD NG-36WC-00001 PG15 STEP L FOUND BUBBLES FROM LOOSEN SENSE LINE ON HIGH STAGE REGULATOR #2 ENGINE. GROUNDED - YES. REMOVED AND REPLACED HIGH STAGE REGULATOR PER B737-900 AMM 36-11-07. HIGH STAGE REGULATOR INSTALLATION TEST REQUIRED. Apr 22, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022042238107Precooler · inoperativeWHILE WORKING ASA TASK CARD NG-36WC-00001 STEP 10 REQUIRES 450 DEG F THERMOSTAT TO BE REPLACED AND CHANGE 390 DEG F PRE COOLER VALVE SENSOR AS PRECAUTIONARY. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE 450 DEG F THERMOSTAT REF B737-900 AMM 36-11-05-400-801.Apr 22, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022042238106Module · leakingTECH SERVICES REQUEST TO ACCOMPLISH #1 ENGINE BLEED AIR SYSTEM HEALTH CHECK. GROUNDED - YES. WHILE PERFORMING ASA TASK CARD NG-36WC-00001 FOUND HIGH STAGE REGULATOR (HSR) LEAKING FROM REVERSE FLOW DIAPHRAGM. REMOVED AND REPLACED HSR, LEAK CHECKED GOOD B737-90Apr 22, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022042138081Pressure Valve · stuckON DEPARTURE DURING AFTER T/O CHECKLIST WE NOTED A DUCT PRESSURE SPLIT OF 27PSI (LEFT PACK AT 54/ RIGHT PACK AT 28) PRESSURE SPLIT DECREASED WITH A/C DECREASE BUT WAS STILL GREATER THAN 25PSI. GROUNDED - YES. PERFORMED DEFERRED MAINTENANCE LIMITS AND ABBREVIATApr 21, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022041338049Unknown · degradedDUCT PRESSURE INDICATES 60-L 35-R ON CLIMB AT 340 CRUISE 43-L 35-R. GROUNDED - YES. REMOVED & REPLACED #2 ENG BLEED AIR REGULATOR (PRSOV) PER B737-900 AMM 36-11-03-400-801 OPS & LEAK CHECK GOOD. OK FOR SERVICE.Apr 13, 2022 · N428AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022031837718Unknown · unknownIN CRUISE, MESSAGE 'SINGLE FMC OPERATION' ON R SCRATCHPAD AND VTK ON R MAP DISPLAY. LNAV / VNAV DISENGAGED ON R A/P. CORRECTED ITSELF BEFORE ANY PILOT INTERVENTION WITHIN FEW MIN. GROUNDED - YES. SYS LOGGED 'FMC-R PRES POS LAT RATE' LAST LEG. FAULT NO LONGER PMar 18, 2022 · N428AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022012237249Control Valve · faultyAMBER PACK LIGHT ILLUMINATES FOR THE RIGHT PACK ON MASTER CAUTION RECALL. AMBER PACK LIGHT EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. REMOVED & REPLACED RT PACK AFT TEMP CONTROL VALVE REF B737-900 AMM 21-61-21, BITE TEST GOOD.Jan 22, 2022 · N428AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022011237136Transceiver · faultyIN FLIGHT/ HF1 FAIL LIGHT CAN HEAR BUT NO TRANSMIT. GROUNDED - YES. REMOVED AND REPLACED HF1 TRANSCEIVER PER B737-900 AMM 23-11-21. REMOVED POWER AND RESTACKED AIRCRAFT. PER TEST REF AMM 23-11-21 OPS CHK OK.Jan 12, 2022 · N428AS · Boeing 737990ER · HF Communications SystemSDR ASAA2021122136973Unknown · unknownCONDUCTED AUTOLAND HGS RUNWAY 16R KSEA CALM WINDS, 2 DEG C. APPROACH PROCEEDED NORMALLY UNTIL THE FLARE PORTION WHEN AIRCRAFT DRIFTED LEFT 20-30 FT. HGS SEEMED GOOD, JUST AUTOLAND DRIFT LEFT IN FLARE = UNSUCCESSFUL AUTOLAND. GROUNDED - YES. ACCOMP HGS LAST FLTDec 21, 2021 · N428AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021112236718Wire Harness · brokenLOOP B ON ENG 2 HAS FAULT DURING THE FIRE TEST. GROUNDED - YES. TROUBLESHOT PER B737-900 FIM 26-10 TASK 805 AND B737-900 WDM 26-11-11 PG# 2. FOUND HARNESS MW0326 OPEN (BROKEN). REPLACED HARNESS MW0326 PER AMM 26-11-02 PG# 401, SYSTEM OPS CHECKED GOOD. ETOPS GRNov 22, 2021 · N428AS · Boeing 737990ER · Fire Protection System WiringSDR ASAA2021111936657Control Unit · inoperativeON TAKEOFF ROLE - 80 KTS MASTER CAUTION R1 OVERHEAT ILLUMINATED ABORTED TAKEOFF, COMPLETED QRH PROCEDURE, LIGHT REILLUMINATED. GROUNDED - YES. VERIFIED RIGHT SIDE CONTROLLER INOP, SWAPPED CONTROLLERS PN 83000-05605 BACK TO ORIGINAL POSITION. REMOVED & REPLACEDNov 19, 2021 · N428AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
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