JASC 3020

Service difficulty reports · 1,644

Reports filed under 3020 · Air Intake Anti/De-Ice System, 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 jasc_code = '3020'
  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 ASAA2017060320947Duct · gougedNR 2 ENGINE TAI VALVE DUCT AND BRACKETS HAD GOUGES FROM LINK ROD ENDS. GROUNDED - YES. REMOVED AND REPLACED #2 ENG TAI VALVE DUCT AND BRACKETS REF AMM CH. 30-21-11. LEAK CHECK GOOD.Jun 3, 2017 · N583AS · Boeing 737890SDR ASAA2017052320857Circuit Breaker · trippedNR 2 COWL ANTI-ICE VALVE CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. INSPECTED THE CIRCUIT BREAKER ON P18-3 PANEL WITH NO DEFECTS NOTED. RESET THE CIRCUIT BREAKER AS ALLOWED BY AMM 20-60-01. RAN THE NR 2 ENGINE AND OPERATED COWL ANTI-ICE VALVE SEVERAL TIMES, CMay 23, 2017 · N568AS · Boeing 737890SDR ASAA2017042920584Control Panel · failedNR 1 ENGINE COWL VALVE OPEN LIGHT ILLUMINATED INTERMITTENTLY. ENGINE ANTI-ICE SWITCH OFF AND THERE IS NO ASSOCIATED TAI MESSAGE ON THE CDS. ANTI-ICE OPS NORMAL, OBSERVED THE LIGHT ON TWICE, BOTH TIMES LIGHT WENT OUT ON ITS OWN. ACFT GROUNDED. REMOVED & REPLAApr 29, 2017 · N532AS · Boeing 737890SDR HALA2017031900072Anti-Ice Valve · malfunctionedETOPS SIGNIFICANT SYSTEM -ON DESCENT WITH BOTH THROTTLES IN IDLE, GET L ENG ANTI-ICE EICAS AND VALVE ANNUNCIATOR LIGHT WHEN TRYING TO ENGAGE ANTI-ICE. WHEN LEFT THROTTLE WAS PUSHED FORWARD ALL LIGHTS EXTINGUISHED. REPLACED LEFT ENGINE ANTI-ICE VALVE PER AMM 30Mar 19, 2017 · N583HA · Boeing 76733ASDR VNAA2017031300007Shutoff Valve · defectiveWING OVERHEAT MASTER WARNING ILLUMINATED, LEFT WING OVERHEAT CONDITION. REMOVED AND REPLACED THE LEFT WING ANTI-ICE SHUT OFF VALVE.Mar 13, 2017 · N567NN · Cndair CL6002D24SDR IPXA2017031014951Sensor · failedLEVEL 2 ALERT FOR ICE SENSOR FAIL DISPLAYED, COMPLETED QRH PROCEDURE. R & R THE NR HIGH STAGE AND NR 1 INTERMEDIATE PRESSURE SENSOR CFDS FAULT PE2, PE3B AND PI3. T2-1215, T2-1218 AND T2-1185 IAW MM 36-11-05 PERFORMED PSC 1 AND PSC2, RETURNED TO SERVICE IAW 36Mar 7, 2017 · N284UP · Doug MD11FSDR IPXA2017022714461Element · inoperativeDURING CLIMB OUT WITH ANTI-ICE ON, A LEVEL 1 ENG 2 A-ICE OFF MESSAGE REMAINED ON UNTIL A/I WAS SECURED OFF. ACCOMPLISHED FIM 30-22-00-101 FOUND THE NR 2 ENGINE COWL ANTI-ICE MARIFOLD DETECTION SENSING ELEMENTS FAILED RESISTANCE CHECK, R & R THE SENSING ELEMEFeb 25, 2017 · N276UP · Doug MD11FSDR AALA20170217007Warning Light · false activationDURING TAKE OFF ROLL, RECEIVED A NR 1 ENGINE COWL ANTI-ICE AND MASTER CAUTION WARNING. ABORTED TAKE OFF. WARNING LIGHTS EXTINGUISHED. ALL OTHER INDICATIONS NORMAL. SUBSEQUENT TAKE OFF WAS UNEVENTFUL.Feb 16, 2017 · N942NN · Boeing 737823SDR ASAA2017012919586Anti-Ice Valve · failedC/B ENGINE NR 1 ENGINE & WING CONTROL POPPED. GROUNDED - YES. REF FIM 30-11 TASK, GROUND WING THERMAL ANTI-ICE VALVE FOR NR 1 ENGINE REPLACED ON 1/25/2017, REF LOG PAGE 11626191. CHECKED WIRING BETWEEN GROUND WING TAI TEMPERATURE SOLENOID VALVE M1236 AND FIREWJan 29, 2017 · N518AS · Boeing 737890SDR UIEA2017012900119Valve · failedLEFT ENGINE ANTI-ICE VALVE IS EITHER FAILING OR STICKING . VALVE LIGHT STAYS ON UNTIL POWER IS PUSHED UP ON GROUND AND IN FLIGHT. THE LEFT ANTI-ICE VALVE WAS REPLACED IAW AMM 30-21-03. OPS & LEAK CHECKED OK.Jan 28, 2017 · N649GT · Boeing 767375SDR SWIA201743009Warning Message · illuminatedRIGHT COWL ANTI-ICE CAUTION IN FLIGHT. EMERGENCY DECLARED. REPLACED BOTH PRESSURE SWITCH AND VALVE. OPS CHECKED GOOD.Jan 24, 2017 · N8982A · Cndair CL6002B19SDR ASAA2017012319523Anti-Ice Valve · failedNR 1 COWL ANTI-ICE LIGHT CAME ON DURING CLIMBOUT WHILE USING ANTI-ICE. WENT OUT AFTER 2 MINUTES. ACFT GROUNDED. DURING TROUBLESHOOTING OF THE ANTI-ICE VALVE ON THE NR 1 ENGINE, FOUND THE PRSOV IN THE OPEN POSITION WITH ENGINE SHUTDOWN AND APU AIR OFF. REMJan 23, 2017 · N589AS · Boeing 737890SDR UIEA2017012700113Warning Message · false activationRT ENGINE TAI VALVE STATUS MESSAGE. PERFORMED FIM TASK 31-21-805 RESET MESSAGE. IAW FIM TASK 31-41-00. PERFORMED OPS CHECK NORMAL NO FAULTS NOTED.Jan 21, 2017 · N1049A · Boeing 76736NSDR AALA20170124010Controller · faultyAIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. JFK-GRU FLIGHT RETURNED TO JFK. OVERWEIGHT LANDING UNEVENTFUL. LEFT ENGINE ANTI-ICE INDICATION OF VALVE STUCK IN CLOSED POSITION. REMOVED AND REPLACED LEFT ENGINE ANTI-ICE VALVE IAW AMM 30-21-02 (AALA20170121002) AND Jan 21, 2017 · N718AN · Boeing 777323ERSDR AALA20170121002Anti-Ice Valve · faultyAIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. JFK-GRU FLIGHT RETURNED TO JFK. OVERWEIGHT LANDING UNEVENTFUL. LEFT ENGINE ANTI-ICE INDICATION OF VALVE STUCK IN CLOSED POSITION. REMOVED AND REPLACED LEFT ENGINE ANTI-ICE VALVE IAW AMM 30-21-02 AND LEFT ENGINE ANTI-IJan 21, 2017 · N718AN · Boeing 777323ERSDR 2017F00035Anti-Ice Valve · multiple failDURING INCOMING INSPECTION, FOUND SEVERAL DISCREPANCIES ON ANTI ICE VALVE, CRANK ARM AND LINK HAVE BEEN INSTALLED UPSIDE DOWN AND PISTON HAS BEEN DAMAGED, CLIP LOCKING, ASSSEMBLY HAS NOT BEEN CORRECT. BODY SHAFT HAS BEEN INSTALLED WITHOUT SEAL.Jan 19, 2017SDR HALA2017011800008Unknown · malfunctionedETOPS SIGNIFICANT SYSTEM, L/R ENGINE ANTI-ICE DISPLAYED AMBER TAI AT IDLE AND UP TO N2 73%. T/S PER FIM 30-21-00, AMM 30-21-00. CYCLED ENG ANTI ICE VALVES RESET SYSTEM CB'S. RAN BOTH ENGINES AND ANTI-ICE SYSTEMS. OPS CHECKS NML. A/C OK FOR SERVICE.Jan 18, 2017 · N583HA · Boeing 76733ASDR AALA20170119013Anti-Ice Valve · faultyAIRCRAFT WAS GROUNDED. DURING TAKEOFF THE MASTER CAUTION ILLUMINATED ACCOMPANIED BY THE ANTI-ICE LIGHT. ABORTED TAKEOFF AT APPROXIMATELY 20 KNOTS. ACCOMPLISHED FIM TASK 30-21-00-810-809. REMOVED AND REPLACED NR 1 ENGINE THERMAL ANTI ICE VALVE IAW AMM 30-21-11.Jan 17, 2017 · N887NN · Boeing 737823SDR ASAA2017011719429Warning Light · false activationFLIGHT CREW REPORTED THE NR 1 ENGINE COWL ANTI-ICE BLUE LIGHT STAYED ON AFTER ENGINE SHUT DOWN, WITH THE SWITCH TURNED OFF. ACFT GROUNDED. RAN THE NR 1 ENGINE AT IDLE, LIGHT WENT OUT IMMEDIATELY, ALL OTHER INDICATIONS ARE NORMAL. IAW FIM 30-21 TASK 801.Jan 17, 2017 · N508AS · Boeing 737890SDR AALA20170118019Anti-Ice Valve · faultyAIRCRAFT WAS NOT GROUNDED. DURING TAKEOFF THE LEFT COWL ANTI-ICING LIGHT ILLUMINATED. ABORTED TAKEOFF AT APPROXIMATELY 30 KNOTS. REMOVED AND REPLACED LEFT ENGINE COWL THERMAL ANTI ICE VALVE IAW AMM 30-21-11. LEAK AND OPERATIONAL CHECKS NORMAL.Jan 16, 2017 · N806NN · Boeing 737823SDR ASAA2017011419374Warning System · intermittentENGINE ANTI ICE WAS TURNED OFF DURING ENGINE SHUTDOWN. NR 1 COWL VALVE REMAINED OPEN WITH SWITCH IN OFF POSITION. GROUNDED - YES. ACCOMPLISHED FIM 30-21 TASK 804. INTERMITTENT FAULT. NR 1 ENG COWL ANTI ICE VALVE & SWITCH OPS CHECK GOOD. NO HISTORY 30 DAYS.Jan 14, 2017 · N508AS · Boeing 737890SDR FDEA201701110123Anti-Ice System · malfunctionedLEVEL 1 ALERT "A-ICE SENSOR FAIL" AT FL350. STAYED ON FOR REMAINDER OF FLIGHT. IDENTIFIED PARTS, (W/KIT) PNEUMATIC PRESSURE. UPGRADED PNEU SYSTEM. CFDS SENSOR READOUT, PSC 1 SHOWED PE1 XXXX AND PSC 2 SHOWED PE1B XXXX. READINGS RETURN TO NORMAL AFTER PSC 1 Jan 11, 2017 · N603FE · Doug MD11FSDR UIEA2017010700012Warning Light · false activationRT ENG ANTI-ICE VALVE ILLUMINATED AFTER ENGINE START WITH SWITCH ON. OPERATED SEVERAL TIMES DURING FLIGHT OPS, CHECKED OK. PERFORMED GROUND TEST IAW AMM 30-21-03. CHECKED GOOD.Jan 6, 2017 · N641GT · Boeing 76738ESDR SIMA20170105003Anti-Ice Valve · failedDURING TAKE OFF, RECIEVED A LT COWL ANTI-ICE CAUTION MESSAGE. COMPLIED WITH ACM-1 PROCEDURES. REMOVED AND REPLACED THE LT COWL ANTI-ICE VALVE IAW AMM 30-22-01 OPT'S AND LEAK CHECKED GOOD.Jan 5, 2017 · N525AE · Cndair CL6002C10SDR DALA2017010500219Duct · blownPERFORMED AN AIR TURN BACK TO PHL DUE TO NUMBER 1 ENGINE FIRE INDICATION SHORTLY AFTER TAKEOFF. MAINTENANCE FOUND THE NOSE COWL ANTI-ICE DUCT BLOWN. MAINTENANCE REPLACED DAMAGED ANTI-ICE DUCTS AND UPPER COWL DUE TO HEAT DAMAGE. AN ENGINE RUN WAS PERFORMED AND Jan 4, 2017 · N964DL · Doug MD88SDR UIEA2017010600010Anti-Ice Valve · faultyRIGHT ENGINE ANTI ICE VALVE FAIL EICAS MESSAGE. REMOVED AND REPLACED SERVICEABLE ANTI ICE VALVE PER AMM 30-21-03.Jan 3, 2017 · N1997A · Boeing 76733ASDR QXEA2016122900814Door · malfunctionedNR 1 ENGINE BYPASS DOOR WILL NOT OPEN. LIGHT TEST OK. RETURNED TO FIELD. LANDING UNEVENTFUL. DOOR OPENED ONCE ON GROUND. RETURNED TO SERVICE.Dec 29, 2016 · N420QX · Bombdr DHC8402SDR ASAA2016122819184Warning Light · false activationNR 1 ENG ANTI -ICE COWL ANTI -ICE ILLUMINATED AT TAKEOFF POWER. TAKEOFF WAS ABORTED (APPROXIMATELY 20 KTS) AND LIGHT EXTINGUISHED WHEN POWER WAS REDUCED TO IDLE. SUBSEQUENT TAKEOFF WAS UNEVENTFUL. ENGINE ANTI -ICE WAS ON FOR BOTH TAKEOFFS. ACFT GROUNDED. PERFDec 28, 2016 · N589AS · Boeing 737890SDR P5CA2016122700325Warning Light · false activationLEFT ENGINE ANTI-ICE VALVE EICAS MESSAGE AFTER LANDING, MSG CLEARED ON GROUND IAW AMM 30-21-00, ENG RUN FOUND TO BE OK.Dec 24, 2016 · N647GT · Boeing 767306SDR ASAA2016120818984Valve · failedNR 2 ENGINE AMBER TAI ANNUNCIATOR ILLUMINATED AT CRUISE. NO CHANGE IN N1, EGT, OR N2. DURING DECENT, THE TAI OPERATED NORMAL. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE TAI VALVE IAW AMM TASK 30-21-11-000-801 PAGES 1-5, AND AMM TASK 30-21-11-400-801Dec 8, 2016 · N564AS · Boeing 737890SDR ASAA2016120218914Module · failedAMBER TAI INDICATION OCCURED AFTER STOWING ENGINE ANTI ICE ON UPPER DISPLAY UNIT IN FLIGHT. AFTER RECYCLING ENGINE ANTI-ICE SWITCH THE AMBER TAI INDICATION DISAPPEARED. AMBER TAI INDICATION WAS ON NR 2 ENGINE. ACFT GROUNDED. REMOVED AND REPLACED THE ENGINE Dec 2, 2016 · N468AS · Boeing 737990ERSDR RAIA201611280001Anti-Ice Valve · inoperativeNR 1 AND 2 ENGINE ANTI ICE FAILED MESSAGE WHEN BOTH ANTI ICE VALVES HAVE BEEN DEFERRED. R & R THE ANTI ICE VALVE IAW AMM 30-21-01, OPS CHECKED GOOD.Nov 28, 2016 · N13124 · Emb EMB145XRSDR SIMA20161124002Anti-Ice Valve · failedNR 1 ENGINE ANTI ICE FAIL MESSAGE DURING PNEUMATIC INFLIGHT TEST. TURNED ICE DETECTION KNOB TO AUTO AND THE NR 1 ANTI ICE VALVE REMAINED OPEN. VALVE CLOSED AFTER SECOND ATTEMPT. SWITCHING ALL TO AUTO. PERFORMED CONTINUITY AND VOLTAGE TEST AND FUNCTIONAL TEST Nov 24, 2016 · N696AE · Emb EMB145LRSDR FDEA201611103954Warning Message · illuminatedAFTER TAKE OFF AT 1000 FT AGL, RECEIVED A LEVEL 3 ENG 2 ALERT, ICE DUCT. COMPLIED WITH QRH RETURNED TO DEPARTURE. ACCOMPLISHED FIM 30-22-05-00. PERFORMED A NR 2 ENGINE ANTI-ICE INSPECTION CHECK IAW AMM 30-22-00-6-2. INSPECTED ENGINE ANTI-ICE DUCTS, DUNov 10, 2016 · N621FE · Doug MD11FSDR ASAA2016102118445Anti-Ice Valve · failedLEFT ENGINE ANTI-ICE BLUE LIGHT REMAINS BRIGHT BLUE WHEN SELECTED ON. ALTERNATE DEACTIVATION PROCEDURES CH 5-07-01, TABLE 3 ITEMS 3, 4, 5, 9, & 10. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENG COWL TAI VALVE REF B737-800 AMM 30-21-11. OPS CHECK GOOD REF B737-Oct 21, 2016 · N557AS · Boeing 737890SDR SOKF20161023010Warning System · false activationDURING FLIGHT FROM SAL TO MDE THE AIRCRAFT RETURN TO SAL DUE ENG 1 ANTI-ICE VALVE CLOSED, IT INCLUDED AS DMI ENG 1 ANTI ICE VALVE IN OPEN POSITION. THE AIRCRAFT RETURN TO NORMAL OPERATION.Oct 20, 2016 · N496TA · Airbus A320233SDR AALA20161010007Warning Light · intermittentDURING TAKE OFF ROLL, THE NR 1 ENGINE MASTER CAUTION AND ENGINE ANTI-ICE VALVE WARNING LIGHTS FLICKERED. THE AIRCRAFT WAS GROUNDED.Oct 8, 2016 · N9630A · Doug DC983SDR ASAA2016100318198Valve · failedWHEN ENGINE ANTI-ICE ON NR 2 SELECTED ON, COWL VALVE OPEN LIGHT REMAINED BRIGHT. ACFT GROUNDED. REMOVED AND REPLACED COWL ANTI-ICE VALVE IAW AMM 30-21-11. OPS, LEAK, AND BONDING CHECKED GOOD.Oct 3, 2016 · N592AS · Boeing 737890SDR ASAA2016100118165Valve · failedDURING CLIMB OUT, WITH ENGINE ANTI-ICE ON. RECEIVED A AMBER ANTI-ICE LIGHT ON NR 1 ENG. FOLLOWED QRH PROCEDURES AND REDUCED THRUST ON THE NR. 1 ENGINE AND THE LIGHT EXTINGUISHED WITH APPROXIMATELY A 5% REDUCTION IN N1. ADVANCED THRUST IN CLIMB OUT AND THE LIGHOct 1, 2016 · N565AS · Boeing 737890SDR ASAA2016091618049Anti-Ice Valve · failedNR 1 ENGINE, COWL VALVE OPEN, LIGHT IS ILLUMINATED BRIGHT BLUE IN FLIGHT WHEN SWITCH IS IN THE OFF POSITION. ACFT GROUNDED. DUE TO EVIDENCE OF FAILED NR 1 ENGINE TAI VALVE SOLENOID. REMOVED OLD NR 1 ENGINE TAI VALVE ASSEMBLY AND INSTALLED NEW. VALVE CHANGESep 16, 2016 · N467AS · Boeing 737990ERSDR ASAA2016083117876Anti-Ice Valve · failedDURING DESCENT, ENGINE ANTI-ICE TURNED ON. COWL VALVE OPEN LIGHT REMAINED ON. AMBER TAI ON ENGINE DISPLAY INDICATING ANTI-ICE VALVE FAILED CLOSED. CONFIRMED WITH FLIGHT CREW NR 2 ENGINE WAS THE ISSUE. ACFT GROUNDED. REPLACED NR 2 ENGINE INLET COWL ANTI-ICAug 31, 2016 · N587AS · Boeing 737890SDR RAIA201608260002Anti-Ice Valve · inoperativeANTI-ICE INOPERATIVE IN ICING CONDITIONS, FOLLOWED BY SPS/ICE SPEEDS. INSPECTED AND FOUND NR 2 ENG ANTI-ICE VALVE TO BE INTERNALLY DAMAGED NOT ALLOWING PROPER FLOW OF AIR INTO BLEED SYS. REMOVED AND REPLACED ANIT-ICE VALVE OPS CHECK GOOD.Aug 26, 2016 · N14125 · Emb EMB145XRSDR ASAA2016081517713Valve · failedNR 1 ENGINE BLUE COWL VALVE OPEN LIGHT ON BRIGHT BLUE WITH A FLICKER WITH SWITCH IN ON POSITION. TAI ON UPPER DISPLAY IS GREEN. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE COWL THERMAL ANTI-ICE VALVE. IAW AMM 30-21-11/401. OPERATIONAL CHECK, IAW AMM 30-21Aug 15, 2016 · N467AS · Boeing 737990ERSDR ASAA2016080917658Anti-Ice Valve · failedNR 1 ENGINE ANTI-ICE VALVE INOPERATIVE. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE COWL ANTI-ICE VALVE IAW AMM 30-21-11. GROUND VERIFICATION WAS NORMAL.Aug 9, 2016 · N579AS · Boeing 737890SDR ASAA2016072517506Valve · failedNR 2 COWL VALVE OPEN LIGHT ILLUMINATED BRIGHT BLUE WITH ENGINE ANTI-ICE SELECTED ON. ASSOCIATED TAI AMBER LIGHT ILLUMINATED. LIGHT WENT OUT WITH ENGINE ANTI-ICE SELECTED OFF. ACFT GROUNDED. RAN ENGINE, AND FOUND NR 2 COWL VALVE NO TRANSITION "BRIGHT BLUE"Jul 25, 2016 · N506AS · Boeing 737890SDR ASAA2016071117342Warning System · false activationNR 1 ENGINE ANTI-ICE LIGHT SWITCH TURNED ON AND COWL VALVE OPEN LIGHT REMAINS ILLUMINATED BRIGHT. ACFT GROUNDED. PERFORMED FIM 30-21, TASKS 804 AND 805. OPERATED NORMALLY. SUSPECT INTERMITTENT FAULT IAW FIM. OK FOR SERVICE.Jul 11, 2016 · N537AS · Boeing 737890SDR IPXA2016070805577Anti-Ice System · odorCLIMBING OUT, TURNED ENGINE ANTI-ICE ON AND GOT A HOT ODOR IN COCKPIT. NO SMOKE. WHEN ENGINE ANTI ICE TURNED OFF, ODOR WENT AWAY. ACCOMPLISHED ENGINE RUN TEST 3 IAW AMM 71-00-00. ENGINE INLET THREMAL ANTI-ICE SYSTEMS WERE OPERATED AT MULTIPLE POWER SETINGS.Jul 7, 2016 · N415UP · Boeing 75724APFSDR ASAA2016070517274Warning Light · malfunctionedWHEN THE NR 1 ENGINE ANTI-ICE SWITCH WAS MOVED TO THE OFF POSITION, THE NR 1 ENGINE CONTROL VALVE LIGHT REMAINED ILLUMINATED. ACFT GROUNDED. PERFORMED FIM TASK 30-21 TASK 804 E. LIGHT EXTINGUISHED. THIS INDICATES AN INTERMITTENT FAULT WITH NO HISTORY 30 DAYS.Jul 5, 2016 · N508AS · Boeing 737890SDR FDEA201607012228Sensor · defectiveENGINE 2 ANTI-ICE DUCT FAIL, PASSING FL 200 TURNED ON ENGINE ANTI-ICE, RECEIVED NR 2 ENGINE DUCT FAILURE NR 2 ANTI-ICE DISAGREE. QRH INDICATED FAILURE OF NR 2 A/I DUCT. RETURNED TO PAN C WHERE ICING DID NOT EXIST. R & R ALL 3, NR 2 ENGINE COWL ANTI-ICE MANIJul 1, 2016 · N621FE · Doug MD11FSDR ASAA2016070117231Anti-Ice Valve · failedNR 1 ANTI-ICE VALVE STUCK IN OPEN POSITION WHEN ENGINE OPERATING . LIGHT EXTINGUISHED WHEN ENGINE IS OFF. ACFT GROUNDED. REMOVED AND REPLACED NR 1 ENGINE COWL TAI VALVE. OPS NORMAL IAW AMM 30-21-11-000-801.Jul 1, 2016 · N557AS · Boeing 737890
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