JASC 2160

Service difficulty reports · 3,040

Reports filed under 2160 · Cabin Temperature Control 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 = '2160'
  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 FDEA202105281418Controller · malfunctionedDURING CLIMB COCKPIT TEMP BECAME EXCESSIVELY HOT. RAN QRH AND AFTER TRIM AIR SWITCH TURNED OFF REGAINED TEMP CONTROL. PERFORMED BITE TEST ON CABIN ZONE TEMP CONTROLLER. NO CURRENT FAULTS OR PREVIOUS FAULTS NOTED. REMOVED AND REPLACED CABIN ZONE TEMP CONTMay 28, 2021 · N921FD · Boeing 75723ASDR P5CA2021052800198Environ Sys · faultedAFTER TAKEOFF "FWD CARGO BACKUP" CAUTION MSG. COMPLIED WITH QRH PROCEDURE(<P>PERFORMED OPS CHECK OF FWD CARGO AC SYSTEM IAW AMM 21-28-00. OPS CHECKS GOOD AT THIS TIME</P>)May 28, 2021 · N647GT · Boeing 767306SDR ASAA2021052234893Modulating Valve · failedLEFT HAND PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. PERFORMED #1 PACK/ZONE TEMP CONTROL BITE TEST SHOWS TCV FAIL. REMOVED AND REPLACED #1 TEMP CONTROL VALVE REF B737-800 AMM 21-51-10. PERFORMED BITE CHK AND FAULT IS CLEARED. SUPPLIED PNEUMATIC PRESSUREMay 22, 2021 · N517AS · Boeing 737890SDR UIEA2021051801144Warning Message · false activationSTATUS MESSSAGE - CARGO A/C TEMP.(<P>PERFORM SYSTEM BITE CHECK OF THE AIR SUPPLY CONTROL SYSTEM IAW AMM 26-23-00. OPS CHECK GOOD, NO FURTHER DEFECTS NOTED BY MX. STATUS MSG NO LONGER APPEARS.</P>)May 17, 2021 · N1399A · Boeing 767306SDR ASAA2021051534807Modulating Valve · failedCONT CAB ZONE TEMP CAUTION LT SINGLE CHANNEL FAILURE. GROUNDED - YES. REMOVED AND REPLACED PRIMARY FLIGHT DECK TEMP CONTROL VALVE REF B737-800 AMM 21-61-21, LEAK CHECK GOOD, ACCOMPLISHED BITE CHECK NO FAULTS NOTED.May 15, 2021 · N538AS · Boeing 737890SDR UIEA2021051401133Filter · dirtyIN CRUISE FLIGHT DECK TRIM AIR POSITION INDICATORSUDDENLY WENT FULL WARM AND COCKPIT TEMP. ROSE. FLIGHT DECK TEMP OK @ FULL COLD POSITION- OPERATIO9N ERRATIC(<P>PERF. ZONE TEMP CONTROL BITE PER FIM 21-61 F/T 912 FOUND NO FAULTS. FOUND FD TEMP FILTER FULL OF DEMay 14, 2021 · N1013A · Boeing 76736NSDR ASAA2021051034780Warning Light · false activationCONT ZONE TEMP LIGHT ON RECALL AFTER STARTUP. GROUNDED - YES. ACCOMPLISHED PZTC BITE CHECK FOUND FLIGHT DECK TAV FAULT ON #2 CONTROLLER. FAULT RESETS AFTER VERIFY TEST. RAN PACKS AND FAULT DOES NOT RETURN. REF B737-800 FIM 21-62 TASK 801.May 10, 2021 · N512AS · Boeing 737890SDR ASAA2021051034779Modulating Valve · faultedCONT CABIN ZONE TEMP LIGHT. GROUNDED - YES. REMOVED & REPLACED FLIGHT DECK TRIM VALVE REF B737-800 AMM 21-61-21 OSP & LK CK GOOD ACCOMPLISHED BITE CK NO FAULTS FOUND.May 10, 2021 · N506AS · Boeing 737890SDR ASAA2021050934794Modulating Valve · faultedON TAXI OUT, CONT CAB ZONE TEMP LIGHT ILLUMINATED. ACCOMPLISHED QRH & LIGHT EXTINGUISHED. W/ MASTER CAUTION RESET. GROUNDED - YES. REPLACED ZONE TRIM MODULATING VALVE REF B737-900 AMM 21-61-21. PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST AND FAULT CLEMay 9, 2021 · N403AS · Boeing 737990ERSDR DXTA2021051041760Control Valve · defectiveCOCKPIT ODOR: DESCENDING THROUGH 5000 FEET WITH THE APU OFF, WE STARTED TO FEEL LIKE BURNED OIL ODOR IN THE COCKPIT, NO SMOKE ASSOCIATED WITH IT. SIGNOFF. INSPECTED SYSTEM AND FOUND TEMP CONTROLLER VALVE VT009 STICKING. FOUND WATER SERPERATOR CONDENSER SOCK May 7, 2021 · N397QS · Cessna 680CESDR ASAA2021050434749Modulating Valve · inoperativeFWD CABIN ZONE TEMP LIGHT ILLUMINATES DURING MASTER CAUTION RECALL LIGHT EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. REMOVED AND REPLACED FWD CABIN TRIM AIR MODULATING VALVE PER B737-900 AMM 21-61-21-000-801 AND 21-61-21-400-801. OPS AND May 4, 2021 · N440AS · Boeing 737990ERSDR IPXA2021050368919A/C Pack · malfunctionedEMERGENCY DECLARED, LANDED WITHOUT INCIDENT, FLIGHT DECK TEMP EXCESSIVE HEAT AND UNCONTROLLABLE. CABIN TEMP ALT CHECK LIST RUN. FLT DECK TEMP EICAS ILLUMINATED LATER. FLT DECK TEMP 99. DIVERTED TO STL. WHEN L-PACK SELECTED OFF, NO EICAS MSG.T/S LT PACK WOULD May 3, 2021 · N372UP · Boeing 76734AFSDR ASAA2021050234740Modulating Valve · failedR/H PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL, CABIN TEMP IS HOT SO TURNED R/H PACK OFF PER QRH. GROUNDED - YES. REMOVED AND REPLACED R/H PACK TCV, REF B737-900 AMM 21-51-10. BITE CHECK PASS, NO LEAKS NOTED.May 2, 2021 · N481AS · Boeing 737990ERSDR HALA2021050300054Controller · defectiveETOPS - AIR TURN BACK. FIRST ZONE CONTROLLER IN CABIN FROZE @ FULL HOT, COULD NOT COOL. COULD NOT DUPLICATE FAULT. REPLACED ZONE CONTROLLER PRECAUTIONARY PER AMM 21-63-34-400-801-A. OPS CHK OK. CONTROLLER, ZON OFF 43-2161-9-0002 01406 ON 43-2161-9-0002 00715May 1, 2021 · N380HA · Airbus A330243SDR ASAA2021043034711Modulating Valve · faultedDES CHECK THE CONT CAB LIGHT OVERHEAD ILLUMINATED LIGHT. RESET WITH MASTER CAUTION RESET. QRH. NO FURTHER ACTION REQUIRED. GROUNDED - YES. PERFORMED PACK ZONE TEMP BITE PER B737-800 AMM 21-61-00-700-806-002, #2 CONTROLLER FAULT FLT DECK TRIM VALVE. REMOVED CNTApr 30, 2021 · N597AS · Boeing 737890SDR ASAA2021042634684Warning Message · false activationAFTER ENGINE START CONT CAB ZONE TEMP ILLUMINATES ON RECALL EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE TEST ON BOTH ZONE TEMP COT PER B737-800 FIM 21-61 TASK 801 FOUND TRIM VALVE FLT DECK FAULT ON CONT #2, CLEARED TRIM VALVE FLT DECApr 26, 2021 · N538AS · Boeing 737890SDR JJBA20210425038Controller · faultedSMOKE IN CABIN. PERFORMED GVI OF THE PACK #2 ACM. NO DEFECTS NOTED. DETERMINED THE #2 DIGITAL TEMP CONTROLLER WAS FAULTY. PERFORMED GVI FOR OIL LEAKAGE FROM THE NO 0 CARBON SEAL ON ENGINE #2. NO OIL LEAKS OR DEFECTS NOTED. INSPECTED WATER WASH PORTS ON ENGINE Apr 25, 2021 · N14186 · Emb EMB145XRSDR ASAA2021042534679Valve · inoperativeON MC RECALL - FLT DECK ZONE TEMP ILLUMINATED . RESET ON MC RECALL. TEMP SELECTOR OPERATED NORMALLY. GROUNDED - YES. PERFORMED BITE PROCEDURE REF B737-900 AMM 21-51-00, FLT DECK TRIM VALVE LT ILLUMINATED ON BOTH CONTROLLERS. REMOVED AND REPLACED FLT DECK ZONE Apr 25, 2021 · N493AS · Boeing 737990ERSDR ASAA2021042334666Warning Light · false indicationCONT CAB ZONE TEMP LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. PERFORMED ZONE TEMP LIGHTS COME ON DURING MASTER CAUTION RECALL FAULT ISOLATION PROCEDURE AND BITE PROCEDURE FOR LH & RH PACK TEMPERATURE CONTROLLERS FLT DECK TRIM VLVE FAULT LIGHT CLEARED & CONT Apr 23, 2021 · N431AS · Boeing 737990ERSDR ASAA2021042134642Warning Light · false activationCONT CAB TEMP LIGHT ILLUMINATED ON RECALL AND RESETS WITH PUSH OF MASTER CAUTION. GROUNDED - YES. REF B737-900 FIM 21-62 TASK 832, ZONE TEMP CONTROLLER #2 SHOWS FLIGHT DECK TRIM VALVE FAULT WHEN 'BIT' & 'PREV FLT' PRESSED, FAULT UNLATCHED & CLEARED WHEN 'VERIFApr 21, 2021 · N468AS · Boeing 737990ERSDR ASAA2021042034626Modulating Valve · faultedAIRCOND - ZONE TEMP CAUTION. GROUNDED - YES. REMOVED AND REPLACED ZONE TRIM AIR MODULATING VALVE POSITION. R/H FPX REF B737-900 AMM 21-61-21/401. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST AMM TASK 21-61-00-700-806-002. OPS CHECK GOOD.Apr 20, 2021 · N440AS · Boeing 737990ERSDR UIEA2021042100947Warning Message · false activationFWD CABIN TEMP EICAS MSG.(<P>TRANSFERRED TO MDDR # 145639 OAW MEL 21-61-01-02 DUE DATE: 30APR21 CAT "C". C/W MX PROCEDURE. SP 2315Z</P><P>21APR, ONT MX LP 695222, ITEM M3: PERF OPS CHECK OF ZONE TEMP CONTROL SYSTEM IAW AMM 21-61-00. OPS CHECK GOOD, NO PREVIOUSApr 20, 2021 · N1181A · Boeing 7673Y0SDR ASAA2021041934615Bulb · detachedWHILE SITTING AT GATE ON APU BLEED AIR, FLIGHT DECK TEMP GOT VERY HOT. TURNED TEMP CONTROL DOWN AND TEMP INITIALLY DIDN'T CHANGE, INDICATION STAYED VERY HOT. AFTER APPROX TWO MINUTES, TEMP RETURNED TO NORMAL. WHILE HOT, LEFT PACK SHOWED APPROX 60 DEG C. GROUNDApr 19, 2021 · N536AS · Boeing 737890SDR 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 737990ERSDR ASAA2021041234571Warning Light · false activationAFTER ENGINE START, LEFT PACK LIGHT ILLUMINATED AFTER MASTER RECALL, EXTINGUISHES AFTER RESET. GROUNDED - YES. REF B737-800 FIM 21-53 TASK 821, #1 PZTC BITE PREV FLT LOGGED THIS PACK TCV FAULT. RESET FAULT, VERIFIED LEFT PACK OPS CHECKED NORMAL ON GND IN ALL TApr 12, 2021 · N581AS · Boeing 737890SDR ASAA2021041134587Control Valve · failedON MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATES EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED FAULT, #2 PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL "FLIGHT DECK TCV". REMOVED & REPLACED FLIGHT DECK TCV (V143) REF B737-800 AMM 21-6Apr 11, 2021 · N564AS · Boeing 737890SDR DALA2021041202123Filter · dirtySHIP 3248 PAC 1 & 2 DO NOT COOL AIRCRAFT WITH APU OR WITH ENGINES OAT 82 AT PBI (INSIDE TEMP 86/80/76) PACS HAVE DIRTY SOCKS SMELL CYCLED HOT AIR VALVE - IT WAS OPEN HOT AIR TO OFF FOR 5 MINS THAT HELPED COOL A/C. CORRECTIVE ACTION: REPLACED AIR ACTUATOR AND CApr 11, 2021 · N348NW · Airbus A320212SDR UIEA2021041200877Warning Message · false activationSTATUS MSG CARGO A/C TEMP(<P>PERFORMED BITE CHECK OF ZONE TEMP CONT, NO FAULTS FOUND, OLD FAULT ON EICAS CLEARED PER AMM TASK 21-61-03-715-022.</P>)Apr 10, 2021 · N1399A · Boeing 767306SDR UIEA2021041200879Modulating Valve · faultedFLIGHT DECK TEMP INOP IN AUTO MODE(<P>REMOVED AND REPLACED TRIM AIR MODULATING VALVE IAW B767 AMM 21-61-07. OPS CHECK GOOD AT THIS TIME.<BR /></P>)Apr 8, 2021 · N640GT · Boeing 7673S1SDR UIEA2021040900870Warning Message · false activationITEM #1 EICAS MSG FLT DECK TEMP.(<P>ACCOMPLISHED BITE CK OF TEMP CONTROL LEFT PACK, NO FAULTS FOUND, MSG RESET IAW B767 AMM 27-61-00. FLT DECK TEMP OPS CK GOOD AT THIS TIME. NO MSGS.</P>)Apr 8, 2021 · N640GT · Boeing 7673S1SDR UIEA2021040900871Sensor · faultedFWD CGO BACKUP EICAS MSG DISPLAYED AFTER LANDING.(<P>PERFORMED TASK 21-28 FAULT TREE 809, FAULTED FWD CARGO DUCT SENSOR. REMOVED AND REPLACED SENSOR AMM 21-61-01.</P>)Apr 6, 2021 · N1399A · Boeing 767306SDR ASAA2021040634523Controller · malfunctionedCONT CAB ZONE TEMP LIGHT ON RECALL RESETS W/MC. GROUNDED - YES. A/C REL PER MEL 21-21G PRIMARY CONT CAB ZONE TEMP INOP. ACCOMP BITE CK OF #2 ZONE CONT PER B737-900 21-61-00. LOGGED FLT DECK TRIM VALVE. FAULT CLEARED & OPS CKS NML. THIS CLEARS MEL 21-21G, FLT CApr 6, 2021 · N469AS · Boeing 737990ERSDR ASAA2021040534514Modulating Valve · faultyCONT CABIN ZONE TEMP ON RECALL. GROUNDED - YES. REMOVED AND REPLACED TRIM AIR MODULATING VALVE OPS CHECK GOOD. REF B737-900 AMM 21-61-21/401Apr 5, 2021 · N493AS · Boeing 737990ERSDR ASAA2021033034484Modulating Valve · inoperativeCONT CAB ZONE TEMP LIGHT ILLUMINATED AFTER TAKEOFF. RAN QRH, LIGHT RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. DUE TO PAST HISTORY REMOVED AND REPLACED CONTROL CABIN TRIM MODULATING VALVE IAW B737-800 AMM 21-61-21-000-801 AND AMM 21-61-21-400-801, ETOPS Mar 30, 2021 · N566AS · Boeing 737890SDR ASAA2021033034475Warning Message · false activationUPON RECALL: CONT CAB: ZONE TEMP LIGHT RAN QRH, NO CHANGE. GROUNDED - YES. BITE OF NR 2 PACK TEMP CONTROLLER SHOW, FLT DECK TRIM VALVE FAULT BITE OF CONTROLLER PASS REF B737-800 AMM 21-61-20-400-801. FAULT CLEARS AND NO NEW FAULTS.Mar 30, 2021 · N423AS · Boeing 737990ERSDR UIEA2021032900736Status Message · false activationCARGO A/C TEMP STATUS MESSAGE.(<P>PERFORMED BITE OF LEFT PACK CONTROLLER RIGHT PACK CONTROLLER AND AUX ZONE, TEMP CONTROLLER. NO FAULTS FOUND AT THIS TIME. REF AMM 21-61-00/001 AND FIM 21-61/101</P>)Mar 29, 2021 · N1399A · Boeing 767306SDR ASAA2021032934477Sensor · dirtyON PUSHBACK RECALL CONT CABIN ZONE TEMP ILLUMINATED. GROUNDED - YES. PERFORMED PZTC BITE IAW B737-800 FIM 21-62 TASK 801 FOR BOTH PZTCS. FLT DECK TRIM VALVE FAULT LIGHT ON BIT/PREV LEG, CLEAR AND RESETS ON VERIFY FOR NR 2 PZTC. NO FAULTS ON PZTC 1. RAN BOTHMar 29, 2021 · N534AS · Boeing 737890SDR UIEA2021032900735Valve · faultedFWD CABIN TEMP ADVISORY MSG ON EICAS(<P>TRSNSFERRED TO MDDR 144401 IAW MEL 21-61-04-02, CAT C, DATED 05APR21. C/B PULLED AND COLLARED TRIM AIR VALVE LOCKED OUT, MCC NOTIFIED.</P><P>27 MAR - LP 1254532 ITEM 3 - ONT - PERFORMED FIM 21-61 FT 803 AND FOUND FWD TRIMar 26, 2021 · N1487A · Boeing 76731KSDR ASAA2021032234379Warning Light · false activationCONT CAB ZONE TEMP LIGHT. EXTINGUISHED UPON MASTER CAUTION RECALL. GROUNDED - YES. #2 ZTC LOGGED FLT DECK TRIM VALVE. BITE TEST GOOD. FAULT RESET.Mar 22, 2021 · N403AS · Boeing 737990ERSDR ASAA2021032034329Warning Light · false activationAFT CAB "ZONE TEMP" ANN ILLUMINATED AFTER PUSHING THE MASTER CAUTION RECALL. EXTINGUISHED WHEN MASTER CAUTION PUSH TO RESET IS PRESSED. GROUNDED - YES. C/W THE FOLLOWING B737-900 FIM 21-62 TASK 847, TASK 801, & TASK 835. VERIFIED FAULT LIGHT ON FOR AFT ZONE TRMar 20, 2021 · N487AS · Boeing 737990ERSDR ASAA2021031934328Warning Light · false activationCONT CAB ZONE TEMP ON RECALL AFTER START. GROUNDED - YES. C/W B737-900 FIM 21-62 TASK 801 & 21-62 TASK 833. PACK TEMP CONTROL BITE TEST ON ZONE TEMP CONTROL #2 - FLT DECK TRIM VALVE RED LT ILLUMINATED. FLT DECK TRIM VALVE RED LT CLEARED ON RESET. NO FURTHER ACMar 19, 2021 · N493AS · Boeing 737990ERSDR ASAA2021031734307Sensor · obstructedCONTROL CABIN ZONE TEMP LIGHT ILLUMINATED, RESETS. GROUNDED - YES. FOUND FLT DECK TEMP SENSOR FILTER BUNCHED AND OBSTRUCTING SENSOR - RMVD AND REINSTALLED FILTER. BITE SHOWS FLT DECK TRIM VLV FAULT - FAULT CLEARED - RAN PACKS HOT/COLD PERFORMED BITE- CKS GOOD-Mar 17, 2021 · N461AS · Boeing 737990ERSDR ASAA2021031634304Warning Light · illuminatedON RECALL "CONT CAB ZONE TEMP" LIGHT ILLUMINATED WENT OUT ON RESET. GROUNDED - YES. ACCOMPLISHED BITE ON PACK TEMP CONTROLLER, FOUND CAB TRIM AIR FAULT. WAS ABLE TO RESET FAULT CAB CONTROL TEMPERATURE OPS CHECK GODD.Mar 16, 2021 · N535AS · Boeing 737890SDR ASAA2021031334282Control Valve · faultedAFTER ENG START WITH MASTER RECALL, ZONE TEMP CAUTION LIGHT ILLUMINATED AND EXTINGUISHED WITH MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED FAULT, PERFORMED BITE EST PER B737-900 FIM 21-62 TASK 801. FOUND HISTORY OF TCV FAULT. REMOVED & REPLACED TRIM AIR VALMar 13, 2021 · N492AS · Boeing 737990ERSDR ASAA2021031234295Valve · malfunctionedON MASTER CAUTION RECALL AFTER ENGINE START, ZONE TEMP ON CONT CABIN ILLUMINATED, AND RESET. GROUNDED - YES. VERIFIED - PERFORMED B737-900 FIM 21-62 TASK 801 TEMP CNTL BITE SHOWS FLT DECK TRIM VALVE FAULT ON BIT AND LAST FLT. PERFORMED FIM 21-62 TASK 832, VERIMar 12, 2021 · N413AS · Boeing 737990ERSDR ASAA2021031034275Modulating Valve · faultedDURING CLIMBOUT "ZONE TEMP" LIGHT FOR CONT CAB ILLUMINATED. LIGHT EXTINGUISHED PER QRH WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK TEMP CONTROLLER BITE REF B737-900 FIM 21-62 TASK 801. FOUND RIGHT CONTROLLER FAULT FLT DECK TRIM VALVE. REPLACED COMar 10, 2021 · N407AS · Boeing 737990ERSDR ASAA2021030934268Valve · faultedWHILE ACCOMPLISHING #1 PZTC BITE FOUND ZONE TRIM VALVE FAULT ON VERIFY. GROUNDED - YES. NO CURRENT FAULTS IN BACK SYSTEM. BITE CHECK RESET PROCEDURE CLEARED FAULT PER B737-900 AMM 21-51-00-700-803 AC OK FOR SERVICE.Mar 9, 2021 · N491AS · Boeing 737990ERSDR ASAA2021030734257Warning Light · false activationZONE TEMP CONT CABIN ILLUMINATED ON RECALL AND WOULD EXTINGUISH WHEN RESET. GROUNDED - YES. INBOUND CREW REPORTS IT'S STILL DOING IT. FLT DECK TRIM VALVE FAULT ON BITE. ACCOMPLISHED BITE CHECK OF #1 PACK/ZONE TEMP CONTROLLER. NO FAULTS FOR FLT DECK TRIM VALVEMar 7, 2021 · N459AS · Boeing 737990ERSDR ASAA2021030634245Ecs · unknownFLIGHT DECK PRIMARY TEMP CONTROL INOP. GROUNDED - YES. ACCOMPLISHED `PZTC BITE TEST REF B737-900 AMM 21-61-00-700-806-002. LAST FLIGHT LEG HISTORY SHOWED FAULT FOR FLT DECK TRIM VALVE. PREV FLT LEG HISTORY SHOWED NO FAULTS. NO FAULTS SHOWED UPON VERIFICATION.Mar 6, 2021 · N431AS · Boeing 737990ERSDR J7SA2021030800279Valve · malfunctionedAIR TURN BACK DUE TO BURNING SMELL AND DUCT 1 OVERTEMP CAS MESSAGE ON CLIMB. CREW RAN QRH, DECLARED EMERGENCY, LANDED WITHOUT INCIDENT AT KCOS. REPLACED LH TMV IAW EMB 505 AMM 21-61-01. SYSTEM OPS/LEAK CHECK GOOD. P/N OFF/ON: 1300330-11, S/N OFF: 1656, S/N ON:Mar 4, 2021 · N367FX · Emb EMB505
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