JASC 2131

Service difficulty reports · 2,042

Reports filed under 2131 · Cabin Pressure Controller, newest first.

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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 = '2131'
  ORDER BY difficulty_date DESC"

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SDR T6FA2019092300000Controller · malfunctionedEXPERIENCED A LOSS OF PRESSURIZATION AT 43000 FT. CABIN BEGAN CLIMBING AT 900-1000 FT/MIN. EMERGENCY PRESSURE AUTOMATICALLY ACTIVATED AND CREW EXECUTED AN EMERGENCY DESCENT AND DIVERTED TO TERRA HAUTE (KHUF).Sep 18, 2019 · N455NJ · Lear 45LEARSDR JJBA201908197011Controller · inoperativeAUTO PRESS FAIL ON EICAS AND MANUAL PRESSURIZATION INOPERATIVE DURING TAKEOFF CLIMB OUT. R&R AUTO PRESSURE DIGITAL CONTROLLER. OPS CHECK SAT. NO FURTHER DEFECTS NOTED.Aug 17, 2019 · N11191 · Emb EMB145XRSDR AALA201908099009Controller · unreliableAIRCRAFT WAS GROUNDED: PILOT REPORTS CABIN PRESSURE EXCESSIVE ALTITUDE RED ECAM-EMERGENCY DECENT PROCEDURES. FULL BRIGHT LIGHTS IN CABIN AND CHIME. MAINTENANCE ACCOMPLISHED TSM 21-31-00-810-827-A. REPLACED NR 2 PRESSURE CONTROLLER AND OUTFLOW VALVE IAW AMM 21-Aug 9, 2019 · N188US · Airbus A321211SDR UIEA2019080984969Controller · failedNR 2 PRESSURE CONTROL SYS STATUS MESSAGE CABIN ALTITUDE SHOWING. REMOVED AND REPLACED THE NR 2 CABIN PRESSURE CONTROLLER IAW AMM 21-31-02, OPS CHECKED GOOD.Aug 8, 2019 · N1709A · Boeing 767375SDR QXEA2019080800310Controller · malfunctionedCABIN PRESSURIZATION FAULT LIGHT ILLUMINATED INTERMITTENTLY. DURING MEL MAINTENANCE PROCEDURE(21-30-5(A)) STEP 12 FWD OUTFLOW VALVE FAILED TO DEPRESSURIZED AIRCRAFT. REPLACED CABIN PRESSURE CONTROLLER IAW AMM TASK 21-31-06-000/400-801, FAULT DID NOT CLEAR IN CAug 8, 2019 · N433QX · Bombdr DHC8402SDR SWAA2019080535565Controller · faultyAIR TURNBACK, CABIN ALTITUDE WARNING ON AT 27000 FT. CABIN ALTITUDE REACHED 10000. PSID READING IN AMBER BAND. CABIN ALTITUDE SHOWING 40000. NO PAX MASK DEPLOYMENT. R & R NR 2 CABIN PRESSURE CONTROLLER IAW AMM.Aug 2, 2019 · N707SA · Boeing 7377H4SDR CA190807019Controller · failed(CAN) AIRCRAFT DEPRESSURIZED BETWEEN FL 100 AND FL 200. CPC REPLACED. NO FURTHER PROBLEM REPORTED. (TC# 20190807019)Jul 25, 2019 · Bombdr DHC8400SDR YENA201907240423Controller · failedFLT 1499, FLL-HAV. RETURNED TO FIELD. AFTER TAKE OFF CAB PR SYSTEM 1 AND 2 FAULT; R & R PRESS CONT# 1 (11HL) IAW TSM 21-31-00-810-827-A AND IAW AMM 21-31-34. OPS CK GOOD, ALSO AS PRECAUTIONARY ACCOMPLISHED PRESSURIZATION TEST WITH AIDS IAW AMM 05-53-00. SYST #Jul 24, 2019 · N556JB · Airbus A320232SDR AALA201907259003Warning System · false activationAIRCRAFT NOT GROUNDED: PILOT REPORTS DESCENDING THROUGH FL 350 AUTO FAIL LIGHT ILLUMINATED IN ACCORDANCE WITH QRH, SWITCHED TO ALTN, LIGHT EXTINGUISHED. MAINTENANCE ACCOMPLISHED BITE AND RESET CABIN PRESSURE CONTROLLERS #1 & #2 IAW AMM 21-31-00 OK FOR SERVICEJul 24, 2019 · N952AA · Boeing 737823SDR CA190807009Controller · failed(CAN) DURING CRUISE A/C STARTED TO DE-PRESSURIZE. CAPTAIN RECOVERED THE CONTROL IN MANUAL AND DESCENDED TO FL 200. FLIGHT CONTINUED TO DESTINATION. A/C PLACED ON MEL FOR MANUAL PRESSURIZATION. CPC WAS REPLACED ON 23-JUL-2019. NO FURTHER PROBLEM REPORTED BY OPEJul 23, 2019 · Bombdr DHC8400SDR SIMA20190721002Controller · failedCABIN ALTITUDE CLIMBED AS HIGH AS 9.800' AND MSL WAS 10,000'. ALSO IN MLI. THE MAIN CABIN DOOR WAS SHUT AND THE GROUND PERSONAL FAILED TO TAKE OFF THE PCA. C/A-REMOVED AND REPLACED DIGITAL CONTROLLER IAW AMM 21-31-01. OPS CHECK GOOD.Jul 21, 2019 · N908AE · Emb EMB145LRSDR AALA201907229033Controller · failedAIRCRAFT WAS GROUNDED: PILOT REPORTS PRESS. FAILURE ON GEAR EXTENSION TRANSFER LOCKOUT/STBY ON LIT. ONE RESET ATTEMPTED FAILED. RESET ON GROUND SUCCESSFUL. MAINTENANCE REPORTS OUTFLOW VALVE ACTUATOR ASSY OPERATION IS ERRATIC AND JERKY BOTH MOTORS ON ASSY ARE Jul 17, 2019 · N501AA · Doug DC982SDR SIMA20190716004Controller · failedAFTER TAKE OFF THE AIRPLANE WAS NOT PRESSURIZING. CAB ALT WENT UP TO 11300-C/A-T/S REF FIM 21-31-00-810-801. REMOVED AND REPLACED PRESSURIZATION DIGITAL CONTROLLER IAW AMM 21-31-01. OPC GOOD IAW AMM 21-31-00.Jul 16, 2019 · N803AE · Emb EMB135KLSDR ASAA2019071230068Controller · failedSYSTEM 1 AND SYSTEM 2 PRESSURE CONTROLLER FAIL. GROUNDED - YES. FOUND CPC 1 INOP. CPC 2 RESET ACCOMPLISHED OK. REPLACED CPC 1 PER AMM 21-31-34. PERFORMED OPERATIONAL TEST PER AMM 21-31-00-710-002. TEST OK. BOTH CPC 1 & 2 TEST OK.Jul 12, 2019 · N524VA · Airbus A319112SDR AALA201907119012Controller · failedAIRCRAFT NOT GROUNDED: PILOT REPORTS AT 3500 FEET MSL ON DECENT, CABIN DUMPED ALL PRESSURIZATION IN AUTO 1. PRESS DIFF ZERO. NO FAULTS OR EICAS MESSAGES DISPLAYED. MAINTENANCE ACCOMPLISHED FIM TASK 21-30-00-815-802. REMOVED AND REPLACED #1 CONTROLLER IAW AMM Jul 10, 2019 · N195AN · Boeing 757223SDR AALA201907039011Controller · faultyAIRCRAFT WAS GROUNDED: PILOT REPORTS BOTH AUTO PRESSURE CONTROLLERS FAILED CLIMBING THROUGH 10,000 FT, CABIN DIFF WAS 4.5, CABIN ALTITUDE ZERO. BOTH TRANSFER LOCKOUT AND STDBY ON LIGHTS WERE ON. CABIN PRESSURE WAS DESCENDING AT 1500 FPM OR MORE DOWN. ACCOMPLISJul 2, 2019 · N501AA · Doug DC982SDR AALA201907059026Controller · faultyAIRCRAFT WAS GROUNDED: PILOT REPORTS BOTH AUTO PRESSURE CONTROLLERS FAILED CLIMBING THROUGH 10,000 FT, CABIN DIFF WAS 4.5, CABIN ALTITUDE ZERO. BOTH TRANSFER LOCKOUT AND STDBY ON LIGHTS WERE ON. CABIN PRESSURE WAS DESCENDING AT 1500 FPM OR MORE DOWN. ACCOMPLISJul 2, 2019 · N501AA · Doug DC982SDR UIEA2019070104648Controller · malfunctionedSTATUS MESSAGE "CABIN ALT AUTO 2". (<P>REMOVED AND REPLACED THE AUTO PRESSURE CONTROLLER 2 IAW AMM 21-31-02-404. OPS TEST GOOD, STATUS MESSAGE CLEARED.</P>)Jun 30, 2019 · N1511A · Boeing 767383SDR JJBA20190630020Controller · inoperativePRESSURIZATION FAILED IN AUTO MODE DURING CLIMB OUT, PRESS MANUAL MODE WORKED FINE. R&R PNEUMATIC OUTFLOW VALVE. OPS CHECK FAILED (PN 2099L011100 SN 02211)R&R ELECTROPNEUMATIC OUTFLOW VALE (PN 2097K011100 SN 00407). OPS CHECK FAILED. R&R DIGITAL AUTO CONTROLLEJun 30, 2019 · N12160 · Emb EMB145XRSDR ASAA2019062099755Controller · faultedAUTO FAIL LIGHT ILLUMINATED ON PRESSURIZATION PANEL. GROUNDED - YES. PERFORMED B737-800 FIM 21-31 TASK 827 SYSTEM OP CHECKS GOOD NO DEFECTS NOTED ALSO PERFORMED FIM 21-31 TASK 801 DCPC BITE, #1 CONTROLLER NO EXISTING FAULTS FAULT HISTORY SHOWED FLT 00 FAULT OFJun 19, 2019 · N596AS · Boeing 737890SDR AALA2019061209011Controller · faultyAIRCRAFT WAS GROUNDED: PILOT REPORTS ON CLIMB OUT FELT SLIGHT DISCOMFORT IN EARS. THEN OUTLET VALVE TURNED AMBER FOLLOWED BY HIGH CLIMB RATE. STOPPED CLIMB AT 10,000 FEET. ECAM CABIN ALT ABOVE 9000 FEET, BEGAN DESCENT. MAINTENANCE REPLACED AEVC IAW AMM 21-26-3Jun 9, 2019 · N151UW · Airbus A321211SDR AALA2019061109013Controller · faultyAIRCRAFT WAS GROUNDED: PILOT DECLARED AN EMERGENCY INTO CLT ON ACCOUNT OF PRESSURIZATION PROBLEM. OXYGEN MASKS DEPLOYED. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE REPORTS PRESSURIZATION CONTROLLER #2 FAULT 21-31-34. REPLACED #2 CONTROLLER IAW TSM 21-31-00-81Jun 7, 2019 · N510UW · Airbus A321231SDR 2FPA2020011500000Controller · malfunctionedWHILE ENROUTE AT 43000 FT THE AIRPLANE MASTER WARNING LIGHT AND CABIN ILLUMINATED. PILOTS ADVISED ATC WHO CLEARED THEM TO 24000 FT. PILOTS PERFORMED APPROPRIATE EMERGENCY DESCENT AND WHILE IN DESCENT REQUESTED ALTITUDE TO10000 FT. PILOTS REQUESTED TO DIVERT TJun 6, 2019 · N315CJ · Cessna 525BSDR SIMA201906076003Controller · malfunctionedCABIN RATE STARTED CLIMBING RAPIDLY AT AROUND 10,000 FT. CABIN RATE WENT TO DASHES. PRESN AUTO FAIL DISPLAYED ON EICAS.-C/A-DEFERRED AUTOMATIC AND MANUAL PRESSURIZATION CONTROL AS PER MEL 21-19 AUTH#060231DM-C DUE TO LACK OF PARTS. M PROCEDURES C/W. BOTH OJun 6, 2019 · N677AE · Emb EMB145LRSDR UIEA2019060764399Controller · malfunctionedCABIN ALT AUTO 1 STATUS MESSAGE. RESET CABIN PRESSURE CONTROLLER. TEST OK IAW AMM 21-31-00.Jun 5, 2019 · N649GT · Boeing 767375SDR SIMA201906043003Controller · failedWHILE PARKED AT GATE, EICAS "PRESN AUTO FAIL" PRESENTED. WHITE SMOKE NEAR THRUST LEVERS AND ELECTRICAL BURNING SMELL. FOUND "PRESS CONTROL" F8 BREAKER POPPED. (ENGINES WERE NOT RUNNING)-C/A-FOUND SMELL AND WHITE SMOKE COMING FROM AUTO PRESSURIZATION DIGITALJun 3, 2019 · N611AE · Emb EMB145LRSDR CA190531014Controller · failed(CAN) `CABIN PRESS` WARN LIGHT ON DURING CLIMB. AT CABIN ALT 10,000FT, CABIN PRESS WARN & CPC FAULT LIGHT ILLUMINATED. AFTER RESET, C/A REMAINED @ 8,000FT. PERFORMED ATB. CPC & P3 ELEC CONN (OFV) REPLACED. WIRING CHK C/O SATIS. A/C RTS. (TC# 20190531014)May 30, 2019 · Bombdr DHC8400SDR CA190529006Controller · faulted(CAN) PILOT REPORTED CABIN PRESSURE CAN`T INCREASE ACCORDING WITH CLIMBING UP. ATB TO DEPARTURE AIRPORT. CORRECTIVE ACTION: THE CABIN PRESSURE CONTROL PANEL WAS REPLACED (TC# 20190529006)May 27, 2019 · Cndair CL6002D24SDR CALA2019052700851Control Module · malfunctionedPRESSURIZATION PANEL WENT COMPLETELY BLANK APPROX 12000 REMOVED AND REPLACED CABIN PRESSURE CONTROL MODULE REF AMM 21-31-02. ALL TESTS PASSED. NO FAULTS. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1165252 SN OFF 7041 PANEL, PRESS, C OFF 29-2131-9-0006 7041 ONMay 27, 2019 · N13716 · Boeing 737724SDR SIMA20190526001Controller · failedJUST BELOW 10,000' EICAS DOOR OPN+BAGGAGE DOOR T/O PGE INDICATED RED(OPEN).RTB;THEN PULLED INTO GATE +AS CABIN APPEARED TO DEPRESSURIZE, BAGGAGE DOOR SHOWED GREEN(CLOSED) BUT AT 10,000' WE DIDN'T APPEAR TO BE PRESSURIZING PROPERLY. CABIN ALT WAS 400'@10,000, 0May 26, 2019 · N807AE · Emb EMB135KLSDR JJBA20190521010Controller · inoperativeLOST PRESSURIZATION AT 30,000 FT IN AUTOMATIC MODE. AS DESCENDING TO 30,000 FEET AND AFTER LEVELING OFF, PRESSURIZATION BEGAN A SLOW CLIMB TO ABOUT 14,000 USING QRH DESCENDED TO 10,000 AND ALLOWED PILOT TO REGAIN PRESSURIZATION CONTROL USING MANUAL MODE. O2 MAMay 21, 2019 · N33182 · Emb EMB145XRSDR DALA2019052003107Controller · malfunctionedSHIP 0197 - DIV - DIVERTED TO DTW DUE TO AUTO CABIN PRESSURIZATION FAILED. CREW WAS ABLE TO CONTROL THE CABIN PRESSURE MANUALLY PER QRH. CREW DECIDED TO DIVERT TO A STATESIDE HUB WITH OCC AND MCC CONCURRENCE. NO EMERGENCY WAS DECLARED; FLIGHT DIVERTED TO DTW. May 17, 2019 · N197DN · Boeing 767332SDR DALA2019051603072Outflow Valve · obstructedSHIP 907 - PRESSURIZATION - DECLARED EMERGENCY INTO MIA DUE TO LOSS OF AUTO PRESSURIZATION. MASKS DEPLOYED. CORRECTIVE ACTION: MTC. FERRY TO ATL - ATL MAINTENANCE FOUND SCREW BLOCKING FULL ROTATION OF OUTFLOW VALVE WHEEL IN CENTER PEDESTAL. THE SCREW WAS REMOVMay 15, 2019 · N907DL · Doug MD88SDR CA190513021Controller · failed(CAN) CPC AUTO MODE CONTROL UNRELIABLE IN CLIMB. DURING CLIMB, CABIN RATE OF CLIMB INDICATED [0], CABIN ALT [0FT]. NO FAULT LIGHT ILLUMINATED. MANUAL OPS OK HOWEVER UNRELIABLE IN AUTO MODE. AIR TURN BACK PERFORMED. CPC FAULT ERASED, [CPC CONT FAIL] & [CPC OFV May 7, 2019 · Bombdr DHC8400SDR N6WA2019050602Controller · faultyAIRCAFT NOT PRESSURIZATION. INSPECTED AND FOUND AUTO PRESSURIZATION INOP. DEFERRED NR 1 AUTO CPC ON OCN 70055293 PER MEL 21-31-01A CAT C AUTH BY MXC.May 6, 2019 · N152GJ · Cndair CL6002C10SDR AALA201905049002Controller · faultyAIRCRAFT NOT GROUNDED: PILOT REPORTS AFTER TAKEOFF BELOW 5000 FEET AUTO FAIL LIGHT ILLUMINATED AND ALTN LIGHT ILLUMINATED, PAN QRH CHECKLIST AND SWITCHED PRESS CONTROL TO ALTN IAW CHECKLIST. NOTE: THIS OCCURED WHILE RUNNING THE REQUIRED PACK REINSTATE CHECKLISMay 3, 2019 · N909AN · Boeing 737823SDR SIMA2019042219001Controller · failedAIRCRAFT BEGAN TO LOOSE PRESSURAZATION DURING CLIMB CABIN ALTITTUDE CONTINUED TO INCREASE UNTIL CLIMB STOPPED DESCENT BEGAN-C/A-DEFERRED AUTO AND MANUAL PRESSURAZATION M PROCEDURES C/W REF MEL 21-19 AUTH 040646DM-C. TS IAW 21-31-00-810-801-A REMOVED AND REPLACApr 19, 2019 · N615AE · Emb EMB145LRSDR ASOA2019041955056Controller · faultyPILOT REPORTED COMING THROUGH 7000MSI LOST ALL PRESSURIZATION WITH NO EICAS WARNINGS PACKS WOULD NOT RESET. MX REMOVED AND REPLACED DIGITAL CONTROLLER WITH OPERATIONAL CHECK GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.Apr 16, 2019 · N14573 · Emb EMB145LRSDR A6WA2019041506557Controller · malfunctionedTHE CREW ADVISED DISPATCH THAT THE AIRCRAFT WAS UNABLE TO PRESSURIZE AND WAS LEVELING OFF AT 10,000. CREW COMPLIED WITH QRH AND SWITCHED TO CONTROLLER 2 AND MANUAL MODE; NEITHER CORRECTED THE ISSUE. THE FLIGHT BURNED OFF FUEL AND RETURNED TO CAE. RTN-CABIN W/Apr 14, 2019 · N425AW · Cndair CL6002B19SDR AALA201904109002Controller · malfunctionedAIRCRAFT WAS GROUNDED. PILOT REPORTED AT AROUND 6000 FEET, THE SAFETY VALVE WENT TO FULL OPEN, DEPESSURIZATION ENSUED. THE CABIN RATE OF DESCENT GOT TO 1400 FPM. MAINTENANCE RESET FCU IAW TSM 24-00-00-817-818-C1. NO FAULTS, OK FOR SERVICE.Apr 9, 2019 · N803AW · Airbus A319132SDR K11A201904042501Controller · inoperativeDURING LEVEL FLIGHT AT 10000 FEET WITH CARGO HEAT OUTFLOW VALVE CLOSED PRESSURIZATION WILL NOT MAINTAIN WITH ONE PACK OPERATION.Apr 3, 2019 · N725CK · Boeing 727224SDR AALA201904019011Controller · inoperativeAIRCRAFT WAS GROUNDED: PILOT REPORTS ON CLIMB OUT THE NUMBER 2 AUTO CONTROLLER FAILED, BLUE INOP LIGHT, NUMBER 2 PRESSURIZATION CONTROLLER WENT TO MANUAL CONTROL TO MAINTAIN AIRCRAFT PRESSURIZATION. BOTH CONTROLLER ARE INOP. MAINTENANCE REMOVED AND REPLACED THMar 27, 2019 · N9681B · Doug MD83SDR UIEA2019031903587Control Unit · faultyINTERMITTENT CABIN ALT 2 AUTO STATUS MESSAGE (<P>RE-OPENED MDDR # 108907 AS PER MEL 21-31-01A CAT C / DUE 28 MAR 19 PLACARDS INSTALLED. VERIFIED MANUAL MODE OPERATION.</P><P>LP 1033432 - M4: PERFORMED BITE TEST IAW FIM 21-3 FAULT TREE 803 ON AUTO 2 AUTO 2 FAIMar 19, 2019 · N1511A · Boeing 767383SDR UIEA2019031903586Controller · malfunctionedCABIN ALT AUTO 2 STATUS MESSAGE AUTO PRESSURIZATION DID NOT AUTO SWITCH TO AUTO 1 CAUSING CABIN ALTITUDE EICAS WARNING CABIN ALT REACH 2000 FT. (<P>TRANSFERRED TO MDDR # 108907 AS PER MEL 21-31-01A CAT C </P><P>LOG PAGE 1033426 PERFORMED FIM 21-31-00 FOUND NO Mar 18, 2019 · N1511A · Boeing 767383SDR DXTA2019031102152Controller · defectiveCABIN ALTITUDE AMBER CAS ILLUMINATED - CLIMBING THROUGH FL 180 AMBER CAS CABIN ALTITUDE ILLUMINATED AND CABIN SHOWED 9000 FEET. CABIN ALTITUDE CHECKLIST WAS COMPLETED AND THE MAX CABIN WAS 9500 FEET. PASSENGER MASKS WERE NOT DEPLOYED. DESENDING THROUGH FL 180 Mar 11, 2019 · N359QS · Cessna 680CESDR CA190311029Controller · defective(CAN) ON THE GROUND, WHEN BLEEDS SELECTED ON, THE AIRCRAFT BEGINS TO PRESSURIZED AT MINUS 2000 FPM, THE SAME OCCURS WHEN PRESSURIZATION SELECTED TO DUMP. THE AIRCRAFT WAS BROUGHT INTO THE HANGER FOR FURTHER TROUBLESHOOTING. MTC REPLACED THE CABIN AIR CONTROLLEMar 10, 2019 · Dhav DHC8301SDR ASAA2019030628497Control Module · intermittentFLT ALTITUDE SELECTOR KNOB ON PRESSURIZATION SYSTEM CONTROL HAS TROUBLE SELECTING DESIRED ALTITUDE. SOMETIMES THE DIGITAL ALTITUDE SELECTED INDICATOR WILL NOT MOVE WITH THE KNOB MOVEMENT. GROUNDED - YES. DUPLICATED PROBLEM - INTERMITTENT. REPLACED CABIN PRESSUMar 6, 2019 · N431AS · Boeing 737990ERSDR CA190301001Controller · malfunctioned(CAN) CABIN PRESSURIZATION FAILURE. NO DIFF BUILD UP AND CABIN ALTITUDE STARTED CLIMBING AT THE SAME RATE AS THE AIRCRAFT ROC. NO CAUTION OR WARNING LIGHT WHILE PASSING 6000 FT. THE PRESSURIZATION FAILURE WAS NOTICED. LEVELED OFF AT FL 70, QRH WAS CARRIED OUT.Mar 1, 2019 · Bombdr DHC8400SDR AALA201903059007Controller · inoperativeFLIGHT CREW REPORTED THAT BOTH CABIN AUTO PRESSURE CONTROLLERS WERE INOPERATIVE DURING CLIMBOUT. PRESSURIZATION WENT TO FULL DESCEND, PRESSURIZING BOTH AUTO CONTROLLERS WENT TO MANUALTO CONTROL CABIN. MAINTENANCE PERFORMED A CONTROLLER BITE TEST IAW AMM 21-32Mar 1, 2019 · N9619V · Doug MD83SDR AALA201903052001Controller · inoperativeFLIGHT CREW REPORTED THAT BOTH CABIN AUTO PRESSURE CONTROLS WERE INOPERATIVE DURING CLIMBOUT. PRESSURIZATION WENT TO FULL DESCEND, PRESSURIZING BOTH AUTO CONTROLLERS WENT TO MANUALTO CONTROL CABIN. MAINTENANCE PERFORMED CONTROLLER BITE TEST IAW AMM 21-32-00-1Mar 1, 2019 · N9619V · Doug MD83
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