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 ASAA2021073035597Regulator · leakingWHILE PERFORMING TASK CARD NG-36WC-00001, FOUND MASSIVE AIR LEAK AT FWD PART OF HSR, SO BAD THE HSV WOULD NOT MOVE ON THE #2 ENGINE. GROUNDED - YES. REMOVED AND REPLACED THE #2 HIGH STAGE REGULATOR IAW B737-900 AMM 36-11-07/401. ETOPS GROUND VERIFICATION SUCCJul 30, 2021 · N478AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2021073035596Valve · failedWHILE PERFORMING TASK CARD NG-36-WC-00001 FOUND THE #2 ENGINE PCV BAD. GROUNDED - YES. REMOVED AND REPLACED THE #2 ENG PRECOOLER CONTROL VALVE PER B737-900 AMM 36-12-02/401. LK CK GOOD REF AMM 36-12-02-400-801. ETOPS GROUND VERIFICATION SUCCESSFUL.Jul 30, 2021 · N478AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2021070235207Control Panel · faultedAUTOPILOT A DISCONNECTED TWO TIME, 30 MINUTES APART. SMOOTH AIR, IN TRIM, RE-ENGAGED OK. SWITCHED TO AUTOPILOT B FOR REMAINDER OF TRIP WITH NO ISSUES. GROUNDED - YES. OPENED & TAGGED 9 C/B, REMOVED & REPLACED MCP, REMOVED TAGS & RESET 9 C/B, PERFORMED LRU REPLJun 30, 2021 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021041434572Modulating Valve · faultedCONT CAB ZONE TEMP LIGHT ILLUMINATED EXTINGUISHES DURING MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONTROLLER BITE CK FOUND CONT CABIN TRIM AIR VALVE FAULT. REMOVED AND REPLACED CONT CABIN TRIM AIR VALVE AS REQUIRED OPS CKD GOOD NO LEAKS NApr 14, 2021 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021041334579Heater · inoperativeCAPT PITOT STAYED ILLUMINATED. GROUNDED - YES. ON INITIAL EVALUATION THE CAPT PITOT LIGHT WAS ON WHILE SWITCH WAS IN THE ON POSITION. C/W B737-900 FIM 30-31 TASK 802 THROUGH STEP E. LIGHT REMAINED ON, C/B'S NOT POPPED, AND CAPT FWD PITOT TUBE IS COLD TO THE TOApr 13, 2021 · N478AS · Boeing 737990ER · Pitot/Static SystemSDR ASAA2021031134414Channel · corrodedAFT CARGO R/H TRANSITION PANEL HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 727+4 TO STA 727I GROUNDED - YES. REPAIRED TRANSITION PANEL STA 727+4 TO STA 727I IAW B737-900ER SRM 53-00-53-2R-5 PARA 4. W=1" O=.040" R=.029" L=6" D=.011"Mar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021031134413Channel · corrodedAFT CARGO R/H TRANSITION PANEL HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 727J TO STA 767 GROUNDED - YES. REPAIRED TRANSITION PANEL STA 727J TO STA 767 IAW B37-900ER SRM 53-00-53-2R-5 PARA 4. W=1" O=.040" R=.031" L=10" D=.009"Mar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021031134412Channel · corrodedAFT CARGO L/H TRANSITION PANEL HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 727J+10 TO STA 847 GROUNDED - YES. REPAIRED TRANSITION PANEL STA 727J+10- TO STA 847 IAW B737-900ER SRM 53-00-53-2R-5 PARA 4. W=2.00 O=.040 R=.028 L=4.00 D=.012Mar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021031134411Channel · corrodedAFT CARGO L/H TRANSITION PANEL HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 727+4 TO STA 727J GROUNDED - YES. REPAIRED TRANSITION PANEL STA 727+4 TO STA 727J IAW B737-900ER SRM 53-00-53-2R-5 PARA 4 W=1" O=.040" R=.020" L=8" D=.020"Mar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Main, BulkheadSDR ASAA2021031134397Shield · corrodedFWD CARGO R/H TRANSITION PANEL CORRODED BETWEEN STA 480 TO STA 500A GROUNDED - YES. REMOVED CORROSION AND FOUND TO BE BEYON LIMITS IAW B737-900 SRM 53-30-15-01-1 / 53-30-15-1A-1 REMOVED DAMAGED PANEL (SHIELD ASSY) AND INSTALLED NEW SHIELD ASSY IAW B737-900 SRMMar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021031134344Support · corrodedFWD CARGO STA 500I LOWER BULKHEAD SUPPORT CORRODED MULTIPLE AREAS BETWEEN LBL 25 AND RBL 25 GROUNDED - YES. REMOVED CORROSION ON STA 500I LWR BULKHEAD SUPPORT IAW B737-900ER SRM 51-10-02-0G-0 FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-30-08-1A-1 REMOVEDMar 11, 2021 · N478AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2021021634111Hf Comm · inoperativeNUMBER 2 HF INOP ON PREFLIGHT. GROUNDED - YES. VERIFIED INOP ON HF2 TUNING WINDOW. ACCOMPLISHED RADIO TUNING PANEL INOP DISPLAY TOGGLE REF B737-900 AMM 23-12-41-800-802. OP CK NORMAL.Feb 16, 2021 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2021012233937Door · missingGROUND CREW REPORTS LAV PANEL MISSING ON ARRIVAL SAN. GROUNDED-YES. CONDITIONAL INSPECTION C/O, PER B737-900 AMM TASK 05-51-59-960-001, NO DAMAGED NOTED TO SURROUNDING SERVICE LAV DOOR AREA. FOUND ONLY PAINT SCRATCHES AT FWD BOTTOM OF LAV SERVICE DOOR SURROJan 22, 2021 · N478AS · Boeing 737990ER · Fluid Service DoorsSDR ASAA2020122633764Shim · defectiveNR 1 ENGINE TREND DATA SHOWS A INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. DATA SCATTER INDICATES FAN LUBE REQUIRED. GROUNDED-YES. ACCOMPLISHED STEPS 1, 2 OF TSR710353. REMOVED AND REPLACED ALL FAN BLADE SHIMS 24 QTY, IAW ALASKA AIRLINES MTX TASK CARDDec 26, 2020 · N478AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2020120533656Oil Cooler · leakingAPU TREND DATA IS SHOWING AN INCREASE IN OIL USAGE. GROUNDED-YES. FOUND APU OIL COOLER LEAKING. APPROXIMATELY ONE DROP PER MIN. REMOVED AND REPLACED APU OIL COOLER, PER B737-900 AMM 49-91-41. GROUND OPERATIONS CHECK IS GOOD. NO LEAKS AT THIS TIME.Dec 5, 2020 · N478AS · Boeing 737990ER · APU Oil SystemSDR ASAA2020120133625Valve · faultedAFTER PUSHBACK/ENGINE START CONT CAB ZONE TEMP LIGHT ILLUMINATED ON RECALL, EXTINGUISHED UPON MASTER CAUTION RESET. GROUNDED-YES. VERIFIED DISCREPANCY, PERFORMED BOTH TPC BITE B737-900 FIM 21-62 TASK 801. FOUND ON NR 2 PZTC FLT DECK TRIM VALVE FAULT. ABLE Dec 1, 2020 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020100233273Duct · wornWHILE ACCOMPLISHING 5TH STAGE CHECK VALVE INSPECTION ON NR 2 ENGINE FOUND INTERSECTION MANIFOLD BEARING AND LINK ASSEMBLY WORN. GROUNDED-YES. REMOVED INTERSECTION MANIFOLD DUCT REF B737-900 AMM 36-11-01. INSTALLED NEW INTERSECTION MANIFOLD, UPPER DUCT SUPPOOct 2, 2020 · N478AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2020081103003Warning Message · false activationHF RADIO 2 INDICATES FAIL ON THE RCP. GROUNDED - YES. PERFORMED BITE OF THE HF COMMUNICATION SYSTEM IAW FIM 23-11, TASK 801, NO FAULTS . NO FAIL INDICATION ON NR 2 HF.Aug 10, 2020 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2020061742804Warning Light · false activationCONT CAB ZONE TEMP LIGHT ILLUMINATED ON MASTER CAUTION RECALL. LIGHT EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. INTERROGATED BOTH PACK CONTROLLERS, NO FAULTS NOTED. DUE TO HISTORY REMOVED & REPLACED CONTROL CABIN TRIM AIR VALVE. OPS CHECKED GOOD &Jun 14, 2020 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020052232744Controller · malfunctionedCONTROL CABIN ZONE TEMP LIGHT ILLUMINATED BUT GOES OUT WITH RECALL. QRH ACCOMPLISHED. GROUNDED - YES. RELEASED PER MEL 21-21G PRIMARY FLT DECK TEMP CONTROL INOP. ACCOMPLISHED PACK TEMP CONTROLLER BITE REF B737-900 FIM 21-61 TASK 801. LAST LEG SHOWS CONT CABIN May 20, 2020 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020051132719Fmc · malfunctionedENROUTE RIGHT FMC FAILED FOR APPROX 1 MIN. FMC RECOVERED ON ITS OWN. GROUNDED - YES. ACCOMPLISHED FMC BITE REF B737-900 AMM 34-61-00 WITH NO FAULTS.May 8, 2020 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020051132713Unknown · malfunctionedDURING CRUISE "B" AUTOFLIGHT DISENGAGED, ,WERE SMOOTH AIR. GROUNDED - YES. MCP DATA FAIL, FMC FAIL - LOGGED FAULTS. ACCOMPLISHED MCP EXTENDED MAINTENANCE TEST - NO FAULTS. LAND VERIFY CHECK OK, REF B737-900 AMM 22-11-00 BITE GROUP 49. FMC BITE OK REF AMM 34-61May 8, 2020 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2020022082216Warning Light · false activationCONT CAB ZONE TEMP ON AFTER START CHECK LIST. GROUNDED - YES. #2 ZTC LOGGED FLT DECK TRIM AIR VALVE. BITE TESTS GOOD - FAULT RESET.Feb 18, 2020 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020021422180Oil Cooler · leaking#1 ENG O/B INNER TR SLEEVE SATURATED AND PUDDLED WITH OIL. GROUNDED - YES. FOUND IDG AIR/OIL COOLER TO BE LEAKING. R&R #1 ENG IDG AIR/OIL COOLER PER B737-900 AMM 24-11-21. LEAK CK GOOD.Feb 12, 2020 · N478AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2020020932120Idg · leaking#1 ENG IDG HISTORY OF FREQUENT SERVICING. GROUNDED - YES. REMOVED AND REPLACED #1 ENG IDG REF B737-900 AMM 24-11-11. OPS CHECK GOOD. LEAK CHECK GOOD. REMOVED IDG INSPECTED FOR DEBRIS W/ NO DEFECTS NOTED REF AMM 24-11-11-080-801.Feb 9, 2020 · N478AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2020012181901Sensor · dirtyCONT CABIN ZONE TEMP LIGHT ILLUMINATED. GROUNDED - YES. UNABLE TO DUPLICATE DEFECT. BITE OF PACK/ZONE TEMP CONTROLLERS PER B737-900 FIM 21-62 TASK 801 SHOWED NO FAULTS. CLEANED CONTROL CABIN TEMP SENSOR AND FILTER AND PERFORMED CABIN TEMP CONTROL AND INDICATIOJan 18, 2020 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019122421676Switch · failedHF/ SAT 1 XFER SWITCH UNABLE TO SELECT SAT 1. SWITCH WILL NOT LATCH DOWN IN "SAT". GROUNDED - YES. REPLACED HF/SAT TRANSFER PANEL REF AMM 23-15-00-400-804 VOICE TEST GOOD. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.Dec 22, 2019 · N478AS · Boeing 737990ER · Communications SystemSDR ASAA2019110631268Autoland Sys · malfunctionedDURING AUTOLAND THE AIRCRAFT BEGAN TO DRIFT LEFT AT 120' AND RECEIVED A APCH WARN ABOUT 50' WITH THE AIRCRAFT APPROX 35 LEFT OF CENTER. DISCONNECTED AUTOPILOT AND MANUALLY LANDED AIRCRAFT. CONFIRMED 10R CRITICAL AREAS CLEAR FM TOWER. GROUNDED - YES. ON DEFERRANov 6, 2019 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2019102163057Heater · intermittentCLIMBING THROUGH 10000 L ALPHA VANE LIGHT ILLUMINATED LIGHT EXTINGUISHED AT TOUCHDOWN. GROUNDED - YES. REMOVED & REPLACED WINDOW/PITOT HEAT MODULE (P5-9) REF B737-900 AMM 30-41-41, INSTALLATION TEST PASS. REMOVED & REPLACED LEFT AOA SENSOR REF AMM 34-21-05 6. Oct 16, 2019 · N478AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2019101431016Warning Light · false activation"L ALPHA VANE" LIGHT ILLUMINATED WITH SWITCH IN ON POSN. C/B CONFIRMED IN. NOTE- AFTER SHUTDOWN AND CYCLING SWITCH, LIGHT REMAINED EXTINGUISHED WITH SWITCH IN "ON" POSITION. GROUNDED - YES. C/W B737-900 FIM 30-31 TASK 804 GROUND VERIFICATION CHECKED GOOD.Oct 13, 2019 · N478AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2019091930761Warning System · false activationHF 1 FAIL. GROUNDED - YES. PER FIM 23-11 TASK 801, HF #1 BITE TEST PASSED NO FAULT NOTED. PERFORMED HF #1 COMMUNICATION TEST NORMAL REF AMM 23-11-00-730-801, GROUND VERIFICATION TEST NORMAL, UNABLE TO DUPLICATE DISCREPANCY.Sep 19, 2019 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2019090630635Wire Harness · damagedDURING REPLACEMENT OF #2 ENGINE IGNITER PLUGS, FOUND MISSING BRAIDING IN TWO LOCATION ON THE CORE FIRE DETECTION WIRE HARNESS, LWR HARNESS MW0325. GROUNDED - YES. REMOVED CORE FIRE DETECTOR HARNESS MW0325 PER AMM 26-11-02-000-802. INSTALLED HARNESS PER AMM 26-Sep 6, 2019 · N478AS · Boeing 737990ER · Fire Protection System WiringSDR ASAA2019081203375Warning Light · false indicationAFTER STARTING THE NR 2 ENGINE. START VALVE OPEN STAYED ILLUMINATED. ACCOMPLISHED QRH. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 80-07 TASK 809 FOR R 2 ENGINE. NO DEFECTS NOTED. ACCOMPLISHED OPS CHECK IAW AMM 71-00-00. OPS CHECK OK.Aug 10, 2019 · N478AS · Boeing 737990ER · Engine Start Valves/ControlsSDR ASAA2019081273095Sensor · failedDURING CLIMBOUT THROUGH FL210 THE F/O'S SIDE WINDOW OVERHEAT LIGHT ILLUMINATED, WE EXECUTED THE OVERHEAT (WINDOW) CHECKLIST WHICH HAS US RESET THE SWITCH. AFTER RESETTING, THE LIGHT REMAINED EXTINGUISHED UNTIL 2000' WHEN THE WINDOW ANNUNCIATOR ILLUMINATED AGAIJul 17, 2019 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019071430020Warning System · false activationDURING PDC FOUND RIGHT PACK AMBER LIGHT ON P5-10 ON. GROUNDED - YES. C/W FIM 21-53 TASK 802 RIGHT PACK LIGHT ILLUMINATED AND WILL NOT RESET. VERIFIED C/B IN. PUSHED TRIP RESET SWITCH LIGHT WENT OFF AND STAYED OFF. PER FIM WAS AN INTERMITTENT FAULT. ACCOMPLISHEJul 14, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019071330030Sensor · faultyRIDE SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON DESCENT. FOLLOWED QRH AND LIGHT REILLUMINATED AFTER COOLING OFF PERIOD. GROUNDED - YES. ACCOMPLISHED RT SIDE WINDOW WHCU BITE REF 30-41 TASK 801 . FOUND SEVERAL WINDOW SENSOR FAULTS LOGGED. 30-41 TASK 811 WINJul 13, 2019 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019070729968Warning System · false activationRIGHT SIDE WINDOW OVERHEAT ILLUMINATED. GROUNDED - YES. FOLLOWED QRH AND LIGHT REMAINED EXTINGUISHED.Jul 7, 2019 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019070629941Warning System · false activationON DESCENT R SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. BITE TESTED RT SIDE WINDOW REF FIM 30-41-00-810-801. NO FAULTS. TESTS OK.Jul 6, 2019 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019070229892Actuator · intermittentLEFT HAND PACK LIGHT DURING MASTER CAUTION RECALL. GROUNDED - YES. REPLACED EXIT SRADA PER B737-900 AMM 21-51-27. OPS CK GOOD. PACK ZONE/TEMP BITE CK GOOD PER AMM 21-51-00. ETOPS GROUND VERIFICATION SUCCESSFUL, SRADA LIGHT GREEN.Jul 2, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019070229899Unknown · malfunctionedON AUTOLAND TO RUNWAY 16R. THE AIRCRAFT TOUCHED DOWN WELL LEFT OF CENTERLINE, REQUIRING MAJOR EFFORT TO GET BACK TO CENTERLINE. WIND WAS LIGHT AT 200 AT 4 KNOTS. GROUNDED - YES. ACCOMPLISHED AUTOPILOT CURRENT STATUS REF (DFCS) FIM BITE PROCEDURE 22-11 TASK 801Jul 2, 2019 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2019062869839Warning Light · false activationLEFT PACK LIGHT ILLUMINATES, EXTINGUISHED ON RECALL. GROUNDED - YES. RAN BITE PROCEDURE PER FIM 21-62 TASK 801. NO FAULTS NOTED AT THIS TIME. RAN APU FOR 30 MINUTES WITH PACKS ON. RAN BITE PROCEDURE AGAIN PER FIM 21-62 TASK 801. NO FAULT NOTED AT THIS TIME. OPJun 26, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019062629833Eec · failedWHILE ACCOMPLISHING TASK CARD 7827300 ENG 2 FAULTS LOGGED 73-11282 EEC CHANNEL IS NOT ENERGIZED WITH ALTERNATOR VOLTAGE ON LEGS 1 AND 2. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 73-27 TASK 805. REMOVED AND REPLACED ENG 2 EEC PER B737-900 AMM TASK 73-21-60-00-Jun 26, 2019 · N478AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2019061079649Warning Light · false activationLEFT PACK LIGHT ILLUMINATED W/ MASTER CAUTION RECALL. GROUNDED - YES. CONFIRMED FAULT. COMPLETED B737-900 FIM 21-62 TASK 801. NO FAULTS NOTED. RAN APU & PACK SYSTEM W/ NO LIGHT ILLUMINATION. OPS CHECK WAS SATISFACTORY. NO FURTHER ILLUMINATION W/ MASTER RECALL.Jun 7, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019042929202Control Rod · out of adjustFA REPORTS UPON INITIAL OPENING OF DOOR 1L, THE HANDLE STICKS CAUSING ANOTHER HARDER PULL TO MOVE DOOR HANDLE TO THE OPEN POSITION. GROUNDED - YES. PERFORMED FWD ENTRY DOOR ADJUSTMENT- HORIZONTAL CONTROL ROD ADJUSTMENT. REF AMM 52-11-00-820-801. STEP K. ACCOMPApr 29, 2019 · N478AS · Boeing 737990ER · Passenger/Crew DoorsSDR ASAA201904028853Bearing · wornLI DOOR INTERIOR & EXTERIOR LATCH HARD TO CLOSE. GROUNDED - YES. PERFORMED L1 DOOR SYSTEM TEST REF B737-900 AMM 52-11-00-700-804 HANDLE FORCE WELL ABOVE MAXIMUM LIMIT. ADJUSTED CENTERING GUIDE AND STOP PINS REF APPLICABLE STEPS OF AMM 52-11-00-820-801 NO HELP Apr 1, 2019 · N478AS · Boeing 737990ER · Passenger/Crew DoorsSDR ASAA2019022028261Warning System · false activationCONT CAB ZONE TEMP LIGHT ILLUM ON RECALL. ZONE TEMP LIGHT EXT WHEN MASTER CAUTION WAS RESET. GROUNDED - YES. RESET SYSTEM AND RAN BOTH PACKS FOR 20 MINUTES WITH APU AIR, THEN TESTED SYSTEM PER AMM 21-61-00-700-802-002, BOTH PACK/ZONE TEMPERATURE CONTROLLERS BIFeb 20, 2019 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019011927861Warning System · false activationLEFT PACK LIGHT ILLUMINATED ON TAXI INTO THE GATE. GROUNDED - YES. PERFORMED FIM TASK 21-62 TASK 801. NO FAULT FOUND. CHECKED GOOD ON BOTH PZTC. OPS NORMAL.Jan 19, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019011427784Light · inoperativeWHILE ACCOMPLISHING TASK CARD, EMERGENCY LIGHTS OPS CHECK, LT BULB AFT OF WINGS ON BODY IS OUT. GROUNDED - YES. RELAMPED OVERWING LIGHT ON LT SIDE REF AMM 33-51-04-960-801.Jan 14, 2019 · N478AS · Boeing 737990ER · Emergency LightingSDR ASAA2019011127748Warning System · false activationON MASTER CAUTION RECALL LEFT PACK LT ILLUMINATES PACK LT. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE TEST OF PZTC 1, FOUND SRADA EXIT FAULT, RESET PZTC 1 SRADA EXIT FAULT CLEARED, BITE TEST PZTC 2 FOUND NO FAULT, REF FIM 21-62 TASKJan 11, 2019 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019011027759Lens · detachedMID CABIN OVERWING EMERGENCY SIGN LEGENDS KNOCKED OFF FIXTURE. GROUNDED - YES. REINSTALLED EMERGENCY SIGN. OPS CHECK OKAY.Jan 10, 2019 · N478AS · Boeing 737990ER · Emergency Lighting
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