JASC 3610

Service difficulty reports · 7,150

Reports filed under 3610 · Pneumatic Distribution 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 = '3610'
  ORDER BY difficulty_date DESC"

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SDR 2011FA0000204Pump · inoperativeAIR PUMP WILL NOT SUSTAIN REQUIRED PRESSURE WHEN ENGINE BECOMES HOT. UPON TROUBLESHOOTING THE MECHANIC NOTICED ON INITIAL RUN UP PRESSURES WERE WITHIN LIMITS, AFTER ENGINE STARTED TO WARM UP THE PRESSURE STARTED TO DROP BELOW LIMITS. REPLACED AIR PUMP WITH AMar 25, 2011 · N8046G · Beech F33ASDR 2011FA0000203Pump · faultyPILOT REPORTED INSTRUMENT AIR PRESSURE WAS LOW AT 1700 RPM. UPON TROUBLESHOOTING THE MECHANIC NOTICED ON INITIAL RUN UP PRESSURES WERE WITHIN LIMITS, AFTER ENGINE STARTED TO WARM UP THE PRESSURE STARTED TO DROP BELOW LIMITS. INSTALLED NEW AIR PUMP SYS WORKED Mar 25, 2011 · N8112T · Beech F33ASDR 2011FA0000202Pump · faultyPILOT REPORTED INSTRUMENT AIR PRESSURE WAS LOW AT 1700 RPM. UP ON TROUBLESHOOTING THE MECHANIC NOTICED ON INITIAL RUN UP PRESSURES WERE WITHIN LIMITS, AFTER ENGINE STARTED TO WARM UP THE PRESSURE STARTED TO DROP BELOW LIMITS. INSTALLED NEW PUMP, DURING GROMar 25, 2011 · N8112T · Beech F33ASDR ASAA1159331Valve · malfunctionedRT BLEED TRIP OFF ILLUMINATED AT START OF DESCENT, QRH ACCOMPLISHED LIGHT EXTINGUISHED. FOUND EXPOSED WIRE ON BLEED AIR REG. REPLACED RT BLEED AIR REG. PERFORMED CHECK OF PRECOOLER SYSTEM REF MM 36 12 00 700 801, PRECOOLER VALVE TEST FAILED. CONTINUED W/ CMar 23, 2011 · N587AS · Boeing 737890SDR UALA2011032101363Shutoff Valve · faultyNR 1 ENG BLEED, RTFL. LEFT DUCT PRESS SHOWING 5 PSI IN CRUISE AFTER SURGING DURING CLIMB. LEFT ENG BLEED OFF LIGHT ON. ACCOMPLISHED MM, PNEUMATIC SYSTEM HEALTH CHECK, PRSOV FAILED CHECK. REPLACED PRSOV PER MM9, TESTED NORMAL DURING HIGH POWER ENG RUN.Mar 21, 2011 · N648UA · Boeing 767322SDR C2XA11CL076Valve · faultyEWR - FLT 2563 THE CREW REPORTED A BLEED 2 OVERTEMP MESSAGE ON THE ECIAS ON CLIMBOUT. THE AIRCRAFT DIVERTED INTO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 2 HIGH STAGE VALVE PRESSURE SWITCH AND THE NR 2 FAN AIR VALVE. OPERATMar 21, 2011 · N12167 · Emb EMB145XRSDR RAIA201103210001Coupling · looseDURING CRUISE THE FLIGHT CREW GOT A BLEED 2 LEAK MESSAGE ON EICAS. AIRCRAFT MAKE AN UNSCHEDULED LANDING IN BUF. MAINTENANCE INSPECTED AND FOUND A LOOSE GAMAH COUPLING. THE GAMAH COUPLING WAS RE-SECURED AND A LEAK CHECK WAS PERFORMED. SYSTEM OPS CHECKED GOOMar 21, 2011 · N840HK · Emb EMB145LRSDR 2011FA0000189Pump · faultyPILOT REPORTED INSTRUMENT AIR PRESSURE WAS LOW AT 1700 RPM. UP ON TROUBLESHOOTING THE MECHANIC NOTICED ON INITIAL RUN UP PRESSURES WERE WITHIN LIMITS, AFTER ENGINE STARTED TO WARM UP THE PRESSURE STARTED TO DROP BELOW LIMITS. INSTALLED NEW PUMP, SYS WORKED NMar 21, 2011 · N8046G · Beech F33ASDR CHQA201100122Thermostat · inoperativeCREW REPORTED THAT DURING FLIGHT RECEIVED A BLEED 2 OVERTEMP MESSAGE. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND BLEED 2 WAS DESELECTED, AND RETURNED TO A NORMAL TEMPERATURE. ADDITIONAL WARNING MESSAGES FOR WING ANTI-ICE AND STAB ANTI-ICE FAIL WERE RMar 20, 2011 · N379SK · Emb EMB135KLSDR UALA2011032101362Shutoff Valve · faultyL DUCT PRESS FLUX. L DUCT PRESS CYCLING DURING DESCENT. VALVE LOCKED CLOSED. WORK WITH CH1548. 1 EA RELAY 562-1833 SHPD AOM D0403. REPLACED PRSOV PER MM. ACP ENGINE RUN, OPS CHECK NORMAL.Mar 20, 2011 · N648UA · Boeing 767322SDR UALA2011032101317Shutoff Valve · faultyNR 1 ENG HPSOV MESSAGE ON EICAS. REPLACED NR 1 ENG HPSOV, OPS CHECK GOOD IAW 767MM.Mar 18, 2011 · N672UA · Boeing 767322SDR UALA2011032101314Shutoff Valve · faultyNR 2 ENGINE DUCT PRESSURE LOW AT IDLE. FOUND FAULTY VALVES. REPLACED PRSOV AND HPSOV, OPS CHECK GOOD IAW 767MM.Mar 18, 2011 · N672UA · Boeing 767322SDR AALA20110319TUL01Shutoff Valve · inoperativeBOS - INFLIGHT MIA-CDG. CREW REPORTED LEFT ENGINE HIGH PRESSURE SHUT-OFF VALVE MESSAGE AND BLEED LIGHT ILLUMINATED IN FLIGHT. EMERGENCY DECLARED FLIGHT DIVERTED BOS LANDED WITHOUT INCIDENT. REPLACED LEFT HIGH SHUT-OFF VALVE. SYSTEM GROUND CHECK NORMAL OPERAMar 18, 2011 · N354AA · Boeing 767323SDR UALA2011031801306Valve · faultyRT DUCT PRESS FLUCTUATES-SURGING DURING CLIMB FROM 15-35 PSI. CHRONIC HPSOV VALVE IS SEC CLOSED. REPLACED PRV REPLACED PRECOOLER CONTROLLER. OPS CHECKS OK. NO FAULTS. RE-ACTIVATED HP VALVE.Mar 18, 2011 · N644UA · Boeing 767322SDR CALA2011031800155Controller · failedRT ENG OVERHEAT CLIMBING THRU 330 TO FL 350. RIGHT THROTTLE RETARDED LIGHT DID NOT GO OUT. DESELECT R BLEED, DESENDING BOTH THROTTLES IDLE, ICING OFF, LIGHT EXTINGUISHED. R&R NR 2 ENG RFCC IAW AMM 36-11-18. OPS& LEAKS CHECK NORMAL AT THIS TIME. ROTABLE PARMar 17, 2011 · N13110 · Boeing 757224SDR SWAA111901Control Valve · faultyNR 2 ENGINE PNEUMATIC BLEED TRIP INDICATION, 10 MINUTES LATER NR 1 ENG PNEUMATIC BLEED TRIPPED, DID EMERGENCY DESCENT AND PAX O2 MASKS DROPPED PER QRH. C/W PNEU BLEED SYS CONFIDENCE CHECKS PER SWA MT'S. REMOVED AND REPLACED BOTH ENGINES PNEU BLEED PRECOOLER Mar 16, 2011 · N901WN · Boeing 7377H4SDR UALA2011031501233Valve · wornOUTBOARD IP VALVE WORN ON NR 1. REPLACED VALVE. OPS NORMAL.Mar 15, 2011 · N795UA · Boeing 777222SDR NSVA2011049Seal · defectiveAT OR ABOUT 50 NM NORTH OF IAD CLIMBING THROUGH 14,000 FT, CREW NOTICED LT BLEED AIR LEAK CAUTION LIGHT. CREW COMPLIED WITH QRH AND CONTACTED DISPATCH. IT WAS DECIDED TO RETURN TO IAD. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MX FOUND BAD SEAL BY Y DUCTMar 11, 2011 · N196CJ · Saab 340BSDR CHQA201100055O-Ring · tornCREW REPORTED THAT DURING CRUISE REPORTED A BLEED 2 LEAK MESSAGE IN ICING CONDITIONS ACCOMPANIED BY A BURNT RUBBER ODOR. THE AIRCRAFT DIVERTED TO KBTV AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A LEAK AT JOINT 19 BEHIND THE CARGO COMPARTMENT SIDE WALL. Mar 10, 2011 · N296SK · Emb EMB145LRSDR C2XA11IA045Gasket · brokenIAH - FLIGHT 2281, THE CREW REPORTED A SMELL OF SMOKE IN THE CABIN WHEN FLYING THROUGH RAIN. THE AIRCRAFT LANDED AT OAH WITHOUT INCIDENT WHERE MAINTENANCE INSPECTED THE AIRCRAFT. REMOVED AND REPLACED THE 9TH STAGE BLEED DUCT GASKETS AT THE CHECK VALVE, OPERAMar 5, 2011 · N14950 · Emb EMB145LRSDR SIMA201106702Tube · defectiveON FLIGHT 3967 THE CREW REPORTED, RECEIVED NR 1 BLEED LEAK MESSAGE ON EICAS IN CLIMBOUT AT APPROX 5000". FOLLOWED AOM NR 1 CHECKLIST WITH NR 1 BLEED OFF MESSAGE REMAINED AFTER 3 MINUTES. TURNED NR 2 BLEED OFF MESSAGE WENT OUT AFTER APPROXIMATELY 4 MINUTES WMar 4, 2011 · N602AE · Emb EMB145LRSDR CHQA201100048Switch · intermittentFLIGHT CREW REPORTED A BLEED 1 VALVE CLOSED MESSAGE SHORTLY AFTER TAKEOFF AND RETURNED TO LGA AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NR 1 BLEED PUSH BUTTON AND THE E1 FAN AIR VALVE FILTER AS A PRECAUTION, WITH NO FURTHER DEFECTS BEING NOTED DURMar 4, 2011 · N267SK · Emb EMB145LRSDR YENA20110228205Precooler · crackedFLT 136 RSW-JFK, A/C DIVERTED TO MCO DUE TO BLEED LEAK 1 ON CLIMBOUT FOLLOWED BY BLEED LEAK 2. TECHNICIAN FOUND PRECOOLER ON NR 1 ENGINE CRACKED. REMOVED AND REPLACED NR 1 ENGINE PRECOOLER. PERFORMED ENGINE PNEUMATIC BLEED TEST IAW 36-11-00, OPS CHECK GOOD.Feb 28, 2011 · N190JB · Emb ERJ190100IGWSDR UIEA2011022800133Shutoff Valve · stuckFIRE INDICATION, WARNING AND FIRE BELL DURING CLIMB. PERFORMED "FIRE ENGINE 4" CHECKLIST PER QRH. FIRE EXTINGUISHED IMMEDIATELY AFTER DISCHARGE OF ONE BOTTLE(FOUND NR 4 PRSOV STUCK OPEN. REPLACED PRSOV AND PERFORMED PNEUMATIC HEALTH CHECK. ALL PNEUMATIC CHECKSFeb 28, 2011 · N492MC · Boeing 74747UFSDR YENA20110227204Precooler · failedFLT 750 SJU-MCO, AIR TURNBACK TO SJU DUE TO BLEED 2 LEAK EICAS MESSAGE DURING CRUISE AT FL 300. THE QRH DIRECTED THE CREW TO SHUT-OFF THE AFFECTED BLEED. AT THAT TIME THE A/C HAD NR 1 BLEED SYSTEM ON MEL LEAVING THE A/C WITHOUT ANY BLEED SYSTEMS FOLLOWED BY Feb 27, 2011 · N281JB · Emb ERJ190100IGWSDR C2XA11CL057Clamp · brokenORD - FLT 6009 THE CREW REPORTED A ENGINE 1 BLEED LEAK INDICATION IN FLIGHT. THE AIRCRAFT DIVERTED INTO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE CLAMP ON THE PACK VALVE DUCT. OPERATIONAL CHECKS WERE GOOD.Feb 26, 2011 · N14907 · Emb EMB145LRSDR FDEA201102240756Valve · false activationPASSING 11,000' ON DESCENT HAD A NR 1 ENG FIRE INDICATION. USED QRH PROCEDURES FIRE INDICATION OUT AND REPLACED "A" FIRE LOOPS DETECTORS FOR FAN, CORE, AND PYLON AND "B" LOOP ON THE CORE. ALL WORKED IAW MM 26-10-02-4 PERFORMED TEST REF MM 26-11-02-5 ALL TESTFeb 24, 2011 · N312FE · Doug MD1030FSDR C2XA11TY017Thermostat · blockedTYS - A/C WAS EN ROUTE TO RDU FROM IAD WHEN THE BLEED 1 OVERTEMP IN ICING CONDITIONS, QRH FOLLOWED BLEED 2 OVERTEMP PEGGED TO THE TOP. A/C WAS FERRIED TO TYS WHERE MAINTENANCE REMOVED AND REPLACED THE NR 1 HIGH TEMP THERMOSTAT IAW 36-11-06. REMOVED AND REPLAFeb 22, 2011 · N12136 · Emb EMB145XRSDR UALA2011021700825Pilot Valve · failedAT CRUISE LEFT DUCT PRES 26 RT 42 PSI. THEN BOTH AT 26. ACP TROUBLESHOOTING IAW SERVICE TIP. REPLACED HIGH STAGE PILOT ON NR 2 ENG IAW MM. ACCOMPLISHED PNEUMATIC HEALTH CHECK OF HPSOV AND HIGH PRESSURE CONTROLLER IAW MM. SYS OPS CHECKED GOOD.Feb 17, 2011 · N543UA · Boeing 757222SDR YENA20110217199Precooler · leakingFLT 620 HOU-BOS, AIR RETURN TO HOU DUE TO ENG 1 BLEED LEAK AT FL190 IN CLIMB. LEVELED RAN QRH AT 250 RESET DID NOT WORK. STARTED APU, APU NORMAL BUT NO BLEED AIR FROM ANY SYSTEM. CAB ALT REACHED 11600 PRIOR TO EMERGENCY DESCENT. T/S BLEED 1 LEAK FOUND BAD Feb 17, 2011 · N247JB · Emb ERJ190100IGWSDR C2XA11RI036Valve · inoperativeFLIGHT 2717 - EWR - FLIGHT CREW REPORTED BLEED NR 1 OVERTEMP IN EICAS. CREW PERFORMED AIR RETURN AND LANDED UNEVENTFULLY. EWR MX REMOVED AND REPLACED NR 1 FAN AIR VALVE AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY ACFT WAS APPROVED TO RETURN TO SERVICE.Feb 16, 2011 · N11137 · Emb EMB145XRSDR 2011FA0000109Pump · low pressurePILOT REPORTED INSTRUMENT AIR PRESSURE WAS LOW AT 1700 RPM. UP ON TROUBLESHOOTING THE MECHANIC NOTICED ON INITIAL RUN UP PRESSURES WERE WITHIN LIMITS, AFTER ENGINE STARTED TO WARM UP THE PRESSURE STARTED TO DROP BELOW LIMITS. ON INSP THE VANES SHOW SOME WEARFeb 16, 2011 · N8046G · Beech F33ASDR UALA2011021500793Controller · faultyBLEED FAMV L LT ENGINE BLEED FAN AIR MODULATING VALVE (FAMV) FAILED OPEN OR CLOSED OR LT AIR SUPPLY AND CABIN PRESSURE CONTROLLER FAILURE. STATUS MSG01- LATCHED APPROACH MODE DEPENDENT; FAN AIR MODULATING VALVE (LT) TORQUE MOTOR CIRCUIT IS OPEN OR SHORTED. Feb 15, 2011 · N206UA · Boeing 777222SDR ASAA1159051Valve · malfunctionedEXCESSIVE ENGINE BLEED DUCT PRESSURE SPLIT EXCEEDS 20 PSI. FOUR HOURS INTO CRUISE FLIGHT AT 37 000 N1 =91.4/91.6 WING & ENG ANTI ICE OFF ISOLATION VALVE AUTO PACKS AUTO LEFT BLEED INDICATED 42 PSI RIGHT BLEED INDICATED 19 PSI. SAT 43 C N2= 94.6/94.8 EGT 716/7Feb 15, 2011 · N590AS · Boeing 737890SDR UALA2011021600802Shutoff Valve · bindingRIGHT HIGH STAGE VALVE NOT OPENING. IN FLT, RT DUCT PRESSURE READS ABOUT 10 PSI LOW AND SUSPECTED HIGH STAGE SYS. AT ARRIVAL, IT APPEARED TO WORK OK. DUE HISTORY ON NR 2 ENG BLEED SYS. REPLACED NR 2 ENG HPSOV DUE TO FAILED HEALTH CHECK. ACCOMPLISHED PNEUMFeb 15, 2011 · N543UA · Boeing 757222SDR UALA2011021500788Circuit Card · faultyAPU VALVE DISAGREE LIGHT DISPLAYED. VALVE CLOSED NORMALLY AND CB PULLED AND COLLARED. APU BLEED WOULD NOT OPEN AFTER STARTING LT ENG. AFTER ACFT RETURNED TO GATE AND LT ENG SHUTDOWN, APU BLEED VALVE OPERATED NORMAL. CHECK APU SHUTOFF VALVE INTERLOCK CIRCUITFeb 15, 2011 · N649UA · Boeing 767322SDR ASAA1159031Valve · malfunctionedDURING CRUISE CLIMB APPROACHING FL360 NR 2 ENGINE "BLEED TRIP OFF" ILLUMINATED. IAW THE QRH PROCEDURE SUCCESSFULLY RESET THE BLEED VALVE. LATER APPROACHING FL370 NR 2 ENG. "BLEED TRIP OFF" OCCURRED AGAIN. ATTEMPTED TWO MORE RESETS. THESE RESETS FAILED AFTFeb 13, 2011 · N581AS · Boeing 737890SDR MYWA110023Regulator · faultyETOPS SIGNIFICANT SYSTEM: ON CLIMBOUT, PRESSURIZATION CHECK, RIGHT DUCT PRESSURE AT 30 PSI LEFT DUCT PRESSURE AT 45 PSI AT CRUISE, RIGHT DUCT PRESSURE 30 PSI LEFT DUCT PRESSURE 35 PSI. ON DESCENT, RIGHT DUCT PRESSURE AT 25 PSI AND LEFT DUCT PRESSURE AT 25 PSFeb 12, 2011 · N739MA · Boeing 7378Q8SDR UIEA2011021200059Sense Line · leakingAPPROX 10,000 FT NR3 ENGINE "B" LOOP INDICATED 7.5 AND RISING. "A" LOOK 3.6 AND STEADY. WITHIN SECONDS OF NOTICING TEMP, NR 3 FIRE WARNING ILLUMINATED. ACCOMPLISHED FHB PROCEDURES, FIRE HANDLE WAS PULLED, ENGINE SHUTDOWN. INSPECTED NR 3 ENGINE, AND FOUND HIGHFeb 12, 2011 · N517MC · Boeing 747243BSDR ASAA1159023Unknown · unknownDURING CLIMBOUT AT FL360 N1 99.0-99.0 SAT 60 L DUCT PRESSURE STAYED AT 43 PSI RT DUCT PRESSURE DROPPED TO 23 PSI. STAYED AT 23 PSI UNTIL CRUISE THEN CAME UP TO 34 PSI. COMPLIED WITH FIM 36-10-00-810-804. FOUND NR 1 AND NR 2 ENGINE PRECOOLER CONTROL VALVES AFeb 11, 2011 · N559AS · Boeing 737890SDR MYWA110022Control Valve · failedETOPS SIGNIFICANT SYSTEM: NR 2 ENGINE PRECOOLER CONTROL VALVE AND WING TAI SOLENOID FAIL TEST. REPLACED PRECOOLER CONTROL VALVE.Feb 10, 2011 · N738MA · Boeing 7378Q8SDR SPOAN603SC001Check Valve · failedCREW EXPERIENCED SMOKE IN THE CABIN CLIMBING THROUGH 25,000FT ON A FLIGHT FROM HWD-HOU. CREW IMMEDIATELY LEVELED THE AIRCRAFT OFF AT 25,500FT. PERFORMED EMERGENCY PROCEDURE AND MEMORY ITEMS FOLLOWED BY CHECKLIST PROCEDURE FOR SMOKE IN THE CABIN, EMERGENCY DEFeb 10, 2011 · N603SC · Lear 60LEARSDR C2XA11CL042Pressure Switch · faultyTHE CREW REPORTED THE CABIN PRESSURIZATION DID NOT DESCEND ON SCHEDULE. MAINTENANCE INSPECTED AND REPLACED THE HIGH STAGE VALVE PRESSURE SWITCH AND CONNECTOR P1203. OPERATIONAL CHECKS WERE GOOD.Feb 10, 2011 · N12552 · Emb EMB145LRSDR AALA20110208MIA01Shutoff Valve · inoperativeMIA - CREW REPORTED LEFT HIGH PRESSURE SHUT-OFF VALVE EICAS INDICATION IN FLIGHT. EMERGENCY DECLARED FLIGHT RETURNED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT HPSOV. SYSTEM GROUND CHECK NORMAL OPERATION.Feb 8, 2011 · N355AA · Boeing 767323SDR C2XA11CL038Clamp · looseORD FLT 5959 THE CREW REPORTED A BLEED 1/2 LOW TEMPERATURE MESSAGE ON THE EICAS DURING CLIMBOUT. THE AIRCRAFT RETURNED TO ORD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND RE-SECURED THE NR 1 FAN AIR VALVE CLAMP. OPERATIONAL CHECKS WERE GOOD.Feb 6, 2011 · N12142 · Emb EMB145XRSDR AALA20110205LAX01Shutoff Valve · faultyLAX - CREW REPORTED LEFT ENGINE HIGH STAGE LIGHT ILLUMINATED DURING FLIGHT. EMERGENCY DECLARED FLIGHT RETURNED LAX LANDED WITHOUT INCIDENT. PLACARD LEFT ENGINE HIGH PRESSURE SHUT-OFF VALVE PER MEL 36-2. REPLACED VALVE AT LAX ON 02/08/2011. SYSTEM GROUND CHFeb 5, 2011 · N623AA · Boeing 757223SDR MYWA110019Regulator · inoperativeETOPS SIGNIFICANT SYSTEM: ON CLIMBOUT RIGHT SIDE DUCT PRESSURE READ "0" PSI. CYCLED NR 2 BLEED. NO RELIEF MTX CONTROL ADVISED RETURNED TO BLOCK. REMOVED AND REPLACED NR 2 ENGINE BLEED AIR REGULATOR AND CONNECTOR. SYS OPS NORMAL.Feb 5, 2011 · N752MA · Boeing 73748ESDR UIEA2011020500044Relief Valve · failedCLIMBING THROUGH FL 19.0, RECEIVED A NR 3 ENQINE FIRE INDICATION. BOTH A & B LOOP NACELLE TEMPS READ 8.5. STARTED ENGINE FIRE CHECKLIST, BROUGHT NR 3 THRUST LEVER CLOSE. FIRE SWITCH LIGHT EXTINGUISHED. COMPLETED CHECKLIST. DID NOT DISCHARGE FIRE BOTTLE, FOFeb 5, 2011 · N517MC · Boeing 747243BSDR C2XA11IA028Thermostat · inoperativeFLT 6091, CREW REPORTED A BLEED TWO OVERTEMP INDICATION IN ICING CONDITIONS. THE ACFT RETURNED TO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 HIGH TEMP THERMOSTAT, OPERATIONALLY TESTED WITH NO DEFECTS, AND ACFT APPROVED FOR REFeb 4, 2011 · N12142 · Emb EMB145XRSDR UALA2011020700635Isolation Valve · faultyLEFT BLEED ISOLATION VALVE NOT IN COMMANDED POSITION. STATUS MESSAGE 01- ACTIVE CRUISE MODE DEPENDENT; ISOLATION VALVE (LT) FAILED CLOSED. DB- AIR SUPPLY & CABIN PRESSURE CONTROLLER (R) MSG-3610280 ACTIVE ER MODE. REPLACED LT ISOLATION VALVE IAW MM.Feb 3, 2011 · N783UA · Boeing 777222
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