JASC 2133

Service difficulty reports · 1,711

Reports filed under 2133 · Pressure Regulator/Outflow Valve, 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 = '2133'
  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 CALA2022122803514Outflow Valve · inoperativeAVNCS VENT INOP ON STATUS PAGE AVEC TEST HITS SKIN AIR OUTLET VALVE HAS HISTORY OK TO MEL DEFERRED PER MEL 2126C, DDP STEP A,B, & D C/W BY U092844 & U102066, PROCEDURE 2 PRIOR TO DEICING. REPLACED 22HQ SKIN AIR OULET VALVE IAW AMM 21-26-53-400-001-A. 21-26-00Dec 28, 2022 · N494UA · Airbus A320232SDR YENA2022121601263Outflow Valve · failedFLT#20, LHR-JFK. (ETOPS) 'VENT AVNCS SYS FAULT ON ECAM; REMOVED AND REPLACED SKIN AIR OUTLET VALVE 22 HQ PER AMM 21-26-253-000-01 OPS CHK GOOD PER AMM 21-26-00.'Dec 14, 2022 · N4064J · Airbus A321271NSDR AALA202212087081Outflow Valve · stuckAIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUE TO A VENT EXTRACT FAULT AND THE OUTLET VALVE STUCK OPEN PREVENTING THE AIRCRAFT FROM PRESSURIZING. THE AIRCRAFT LANDED SAFLEY AT CLT WITHOUT FURTHER INCIDENT. MAINTENANCE REPDec 7, 2022 · N580UW · Airbus A321231SDR 6TXA2022112800474Outflow Valve · malfunctionedCREW DEPARTED KVNY AND AS THEY APPROACHED 10K THEY NOTICED THEIR EARS WERE BEGINNING TO FEEL INTENSE PRESSURE AND FELT THE PRESSURE BUILDING UP. ATTEMPTED TO ADJUST CLIMB RATE FROM 500-300 FT / MINUTE WITH NO LUCK. CABIN WAS 1800-2000 / MINUTE. AT 12K THE RED Nov 28, 2022 · N31GV · Gulstm GIVSDR HALA2022111000292Outflow Valve · crackedREMOVED AND REPLACED AIR INLET SKIN CHECK VALVE PER AMM 21-26-56. REPLACED DUCTS DUE TO CRACKS P/N D2122891000001 & D212289090001 AND SILENCER P/N D2122953400001 PER 21-26-81. OPS AND LEAK CHECKS GOOD.Nov 9, 2022 · N214HA · Airbus A321271NSDR ASAA2022110640657Outflow Valve · leakingASA TECH SERVICE REQUEST. FOLLOW UP TO CONTINUING REPORTS OF SQUEALING NOISE IN AFT GALLEY BY R-2 DOOR. GROUNDED - YES. REMOVED AND REPLACED OUTFLOW VALVE WITH NEWER STYLE REF B737-900 AMM 21-31-03.Nov 6, 2022 · N493AS · Boeing 737990ERSDR HALA2022110700286Outflow Valve · faultedATB-AFTER T/O SKIN AIR INLET VALVE ECAM. THROUGH 4000' FEET IN CLIMB LOUD EXPLOSION SOUND, VIBRATION, AND PRESSURE FLUCTUATIONS. TROUBLESHOOTING PER TSM AND BORESCOPE INSPECTION ARE IN-PROGRESSNov 5, 2022 · N214HA · Airbus A321271NSDR ASAA2022110440627Outflow Valve · leakingFLIGHT ATTENDANTS REPORT LOUD SQUEALING SOUND ENROUTE AT ALTITUDE. PRESSURIZATION NORMAL. SQUEAL DIMINISHED @ 4 PSI DIFFERENTIAL. GROUNDED - YES. REMOVED AND REPLACED OUTFLOW VALVE WITH NEWER STYLE REF B737-900 AMM 21-31-03.Nov 4, 2022 · N493AS · Boeing 737990ERSDR GTIA2022110136748Outflow Valve · faultedAFTER T.O VENT SKIN VALVE FAULT FOLLOWED BY BLOWER FAULT AND EXTRACT FAULT-REACTIVATED SKIN AIR OUTLET VLV CURRENTLY ON MEL MDDR 40498 PER AMM 21-26-00. R&R AEVC PER AMM 21-26-34. PERF AEVC TEST PER AMM 21-26-00. TEST OKAY. REF LBP 2862508-1 FOR SKIN AIR OUTLEOct 28, 2022 · N503NK · Airbus A319132SDR QXEA2022101100306Outflow Valve · inoperativeAUTO PRESSURIZATION DID NOT WORK FOR THE FLIGHT. WE MAINTAINED 9,000' FOR CRUISE. CABIN DIFFERENTIAL STAYED NEAR ZERO, AND CABIN ALTITUDE FOLLOWED THE ALTIMETER. REMOVED FROM SERVICE. AFT OUTFLOW VALVE AND DOOR SEAL PRESSURIZATION RESERVOIR DRAIN VALVE REMOVEDOct 9, 2022 · N447QX · Bombdr DHC8402SDR CALA2022092302437Flapper Valve · damagedPDA 2 DISCOVERED AFTER LANDING AND ETOPS PDC THAT THE LOWER PRESS RELIEF VALVE ON UPPER FLAPPER DOOR MISSING. REMOVED AND REPLACED LOWER PRESSURE RELIEF VALVE REF AMM 21-32-01-402-009 COMPLETED STEPS UP. VAVLE REPLACEMENT REQUIRES STATIC SYSTEM LEAK CHECK. LEASep 22, 2022 · N17133 · Boeing 757224SDR AALA202209223919Shutoff Valve · faultyAIRCRAFT WAS GROUNDED: STRONG ODOR ON TAKEOFF AND CLIMBOUT LIKE A "WET SOCK" SMELL ONLY IN COCKPIT, ODOR DISSIPATED IN CRUISE BUT PRESENT DURING APPROACH LANDING AND TAXI IN. ACCOMPLISHED JOB CARD 08L00021001 SMOKE ODOR FUMES INITIAL TROUBLE SHOOT. DURING TROUSep 20, 2022 · N860NN · Boeing 737SDR DALA2022091906202None · noneON DESCENT INTO SLC ECAM MSG CAB PR LO DIF PR. CHKD SAFETY VALVES IAW AMM 21-31 NO DEFECTS NOTED BITE TEST PASSED REF TSM 21-31(226671) CONTINUED TO T/S IN REF TSM 21-31 TASK 810-808 AND TSM 21-31-TASK 810-810 UPON FURTHER VINSPECTION SUSPECT SAFETY OUTFLOW VASep 14, 2022 · N383DZ · Airbus A321211SDR 2022FA0000492Outflow Valve · abnormalDURING A DESCENT TO FL380 FROM FL 450 AS THE AIRCRAFT ALTITUDE CAPTURED AT FL 380 THE CABIN BEGAN TO CLIMB SUDDENLY I SELECTED MANUAL ON THE PRESSURIZATION AND ATTEMPTED TO CLOSE THE OUTFLOW VALVES BUT WAS UNABLE TO CLOSE THEM. THE CABIN CONTINUED TO CLIMB Aug 31, 2022 · N998GP · Gulstm GIVSDR ABXA2022082283Outflow Valve · faultedLOSS OF ALL CABIN PRESSURIZATION CONTROL @ FL 360 MX PAGE SHOWED AUTO 1/AUTO2 INOP. HI FLOW /EICAS SHOWED CABIN ALT MASTER WARNING CABIN AUTO INOP MASTER CAUTION. CREW ELECTED TO AIR TURNBACK TO DEN, MAINTENANCE GROUNDED AIRCRAFT. MAINYENANCE T/S PER 767FIM 21Aug 22, 2022 · N795AX · Boeing 767281SDR AALA202208222876Outflow Valve · defectiveAIRCRAFT WAS GROUNDED: CLIMBING OUT OF 1200 FT LOUD BANG AND PRESSURIZATION BUMP THEN CABIN STARTED AT 2500 F, WE LEVELED OFF AT 16,000FT . AIRCRAFT DIVERTED TO CLT WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED #1 CABIN PRESSURE CONTROLAug 19, 2022 · N93003 · Airbus A319115SDR DALA2022080505377None · noneSHIP 3351 LOUD SQUEAL NOTED WHILE IN CREW BUNK AT CRUISE. CORRECTIVE ACTION: PRESSURIZED A/C FOUND AFT OUTFLOW VALVE SQUEALING. UPON REMOVAL OF AFT OUTFLOW VALVE, FOUND GASKET TO BE ELONGATED. REPLACED GASKET AND INSTALLED OUTFLOW. PERFORMED A/C PRESSURIZATIONAug 4, 2022 · N851NW · Airbus A330223SDR AJXA2022070100019Outflow Valve · bindingDURING TAKEOFF THE SECONDARY OUTFLOW VALVE WOULD NOT CLOSE. WE PERFORMED THE FUNCTIONAL CHECKS OF THE OUTFLOW VALVES AND FOUND THAT THE SECONDARY VALVE WOULD NOT CLOSE PROPERLY. WE REMOVED AND REPLACED AND THE SYSTEM BEGAN TO FUNCTION PROPERLY.Jul 1, 2022 · N232CF · Cessna 750SDR AALA202206247900Outflow Valve · defectiveAIRCRAFT WAS GROUNDED: ON CLIMB OUT AIRCRAFT WOULD NOT PRESSURIZE. AIRCRAFT RETURNED MIA WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. NOTE: NO EMERGENCY WAS DECLARED. REPLACED OUTFLOW VALVE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 21-31-5Jun 22, 2022 · N8001N · Airbus A319115SDR CALA2022060801463Cabin Pressure · warning lightCABIN ALTITUDE LIGHT ILLUMINATED AT FL340...CABIN ALT STAYED AT 10000-FEET ACCOMPLISH FIM TASK 21-33-00-810-803, NO FAULTS NOTED AT THIS TIME, OK TO CONTINUEJun 8, 2022 · N27205 · Boeing 737824SDR ASAA2022060138535Shutoff Valve · faultyTROUBLESHOOTING PER B737-900 FIM 21-33 TASK 802 FOR CABIN RATE OF CLIMB FLUCTUATION REF LP# 60269168 REQUIRES REPLACEMENT OF L/H PACK FLOW CONTROL & SHUT OFF VLV. GROUNDED - YES. REMOVED & REPLACED L/H PACK FLOW CONTROL & SHUTOFF VLV REF B737-900 AMM 21-51-01.Jun 1, 2022 · N495AS · Boeing 737990ERSDR AALA202205051283None · noneAIRCRAFT WAS GROUNDED; "VENT AVNCS SYS FAULT" ECAM MESSAGE CAME ON. LEVELED OFF AT 10,000 FEET, DECLARED AN EMERGENCY AND RETURNED TO BOS LANDING SAFELY. REPLACED SKIN AIR OUTLET VALVE PER AMM 21-26-53, ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.May 4, 2022 · N137AA · Airbus A300*SDR AALA202204274295Seal · dirtyAIRCRAFT WAS NOT GROUNDED: WHILE IN CRUISE, PRESSURIZATION FLUCTUATES + OR - 750 FPM WITH SYSTEMS 1 AND 2. MAINTENANCE PERFORMED A SATISFACTORY OPERATIONAL CHECK OF CABIN PRESSURE CONTROLLERS #1 AND #2 WITH NO FAULTS NOTED OR RECORDED. AS A PRECAUTIONARY MEASUApr 26, 2022 · N993AN · Airbus A300*SDR SIMA20220226001Not Reported · not reportedPRESSURIZATION FAIL WHILE IN FLIGHT AT FL 240 IN BOTH THE AUTO AND MANUAL MODE DECLARED EMERGENCY. MEL 21-30 AUTH# 020319D-C ORIG AML PG 4847349. PACK 2 LOUD NOISE, BLOWN DUCT SLEEVE.-C/A-RAR #2 ACM DUCT SLEEVE, INSP CHECK GOOD IAW AMM 21-51-14, NO LEAKS, RH CFeb 26, 2022 · N939AE · Emb EMB145LRSDR F3LA2022022400003Outflow Valve · leakingDISCREPANCY: REFERENCE LP194685 ITEM 1, FLIGHT # 2586: AIR CREW REPORTS: LOSS OF CABIN PRESSURIZATION. CORRECTIVE ACTION: REMOVED AND REPLACED OUTFLOW VALVE IAW AMM 21-31-51-400-001-A. PERFORMED OPS TEST OF MANUAL MODE FOR OUTFLOW VALVE POSITION INDICATOR IAW Feb 23, 2022 · N301FR · Airbus A320251NSDR HNAA2022021500079Not Reported · not reportedPDIS 655 21-31 2754131 14FEB22 CLT CLOSE AUTO PRESSURIATYION CONTROL INOP IN FLIGHT. MANUAL OPS NORMAL. DEACTIVATED OUTFLOW VALVE IAW 21-31-03-040-801-A. P/C C/B F-8 FACT 14FEB22 05:39 SBY REACTIVATED VALVES IAW AMM 2131-03-440Feb 14, 2022 · N655AE · Emb EMB145LRSDR DALA2022010600102None · noneSHIP 3217 - ATB - DUE TO CABIN PRESSURE SAFETY VALVE AND OUTFLOW VALVE SHOWING AMBER AND OPEN ON ECAM. RESET ATTEMPT DID NOT RECOVER THE PRESSURIZATION SYSTEM. CORRECTIVE ACTION: REPLACED PRESSURIZATION PANEL MODE SWITCH, CPC 1 AND SDAC 1. PRESSURIZATION CHECKJan 6, 2022 · N317US · Airbus A320211SDR A6WA202201108059None · noneWHILE CLIMBING OUT OF KHPN AND GOING THROUGH 10,000', THE CABIN ALT CAUTION MESSAGE INDICATED. THE FO LEVELED OFF AND RETURNED TO 10,000' WHICH I COORDINATED WITH DEPARTURE CONTROL. THE CABIN WAS INDICATING AN ALTITUDE OF 9,300 AT THAT TIME. WE RAN THE QRH FOJan 5, 2022 · N467AW · Cndair CL6002B19SDR AALA202110229412Outflow Valve · leakingAIRCRAFT WAS GROUNDED: LOUD AIR LEAK REPORTED AT AFT LEFT SERVICE DOOR DURING CLIMB AND DESCENT. NOISE STOP ABOUT 5 PSI. REPLACED OUTFLOW VALVE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 21-31-03.Oct 21, 2021 · N806NN · Boeing 737823SDR AALA202110041974Motor · noneAIRCRAFT WAS GROUNDED: CABIN PRESSURE SYSTEM 1 AND 2 FAULT UNABLE TO CONTROL PRESSURIZATION WITH MANUAL. REPLACED OUTFLOW VALVE MANUAL MOTOR (10HL-50) AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 25-31-51.Oct 3, 2021 · N9016 · Airbus A319115SDR ANCF20210913016Outflow Valve · faultedAFTER TAKEOFF VENT SKIN VALVE FAULT ON ECAM, THE PROCEDURE WAS COMPLETED. PRESSURIZATION DIDN´T WORK AND CAB PR EXCESS CAB ALT ON ECAM. COCKPIT OXYGEN MASKS WERE USED. IN ACCORDANCE WITH AMM 35-12-41-100-802-A CLEANING OXYGEN MASKS WAS PERFORMED, AND PRESSURESep 11, 2021 · N745AV · Airbus A320214SDR ASAA2021090835893Outflow Valve · failedAUTO FAIL ILLUMINATED DURING CLIMB, PER QRH ALT MODE SELECTED. PRESSURIZATION NORMAL. GROUNDED - YES. PERFORMED B737-900 FIM 21-31 TASK 801. CONTROLLER #1 FAULTED CODE 88 (SIGNAL TO OUT FLOW VALVE) FAIL. REPLACED OFV WITH NEW REF B737-900 AMM 21-31-03. ETOPS SSep 8, 2021 · N434AS · Boeing 737990ERSDR ASAA2021090335869Outflow Valve · noisyFA'S REPORTS LOUD CONTINOUS HUM/NOISE BY L2 DOOR. GROUNDED - YES. REMOVED AND REPLACED OUTFLOW VALVE REF B737-900 AMM 21-31-03. OPS CHECK GOOD.Sep 3, 2021 · N468AS · Boeing 737990ERSDR GTIA2021090335972Outflow Valve · fluctuatesIMMEDIATELY AFTER TAKEOFF THE CABIN V/S WAS ERRATIC FROM -900 TO +900FPM. THE OUTFLOW VALVE FLUCTUATED ERRATICALLY FROM PARTIALLY OPEN TO A LITTLE OVER QUATER OPEN RAPIDLY AND THERE WAS A CYCLE CONSISTING OF MUCH AC AIR TO VERY LITTLE AC AIR WITH PAIN TO THE ESep 2, 2021 · N670NK · Airbus A321231SDR ANCF20210830015Outflow Valve · faultedDURING CLIMB PASS ING 26000 FEET SAFETY VALVE ECAM COME OUT FALLOW V/S INCREASED BY 2.500 FT/M AT 7.4 PSI. IAW AMM 21-31-52 PB 401 CONF 00 THE SAFETY VALVES 6HL AND 7HL WERE REPLACED BY MCC SUGGESTION. IAW AMM TASK 21-31-00-710-006-A OPERTAIONAL TEST SATISFAug 29, 2021 · N939AV · Airbus A320214SDR ASAA2021082635805Outflow Valve · failedONE HOUR INTO CRUISE AT FL380 CABIN PRESSURIZATION SUDDENLY WENT TO 3500-4000 FPM DESCENT FOR APPROXIMATELY 20 SECONDS . DURING THIS TIME THE CABIN DIFFERENTIAL ROSE FROM BOTTOM OF "ORANGE BAND" TO JUST BELOW "RED MAX" LINE. CONTINUED FLT AT FL340; ACFT CONTINAug 26, 2021 · N529AS · Boeing 737890SDR ASAA2021082235790Outflow Valve · failedPRESSURIZATION SYSTEM "AUTO FAIL" LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. (RESOLVED ON W/O: 1883346 TASKCARD: N/R-00001 ) REMOVED & REPLACED AFT OUTFLOW VALVE ASSY REF B737-900 AMM 21-31-03-400-801. PULLED & RESET 3 TOTAL C/BS. ACCOMPLISHED "MANUAL MOAug 22, 2021 · N462AS · Boeing 737990ERSDR ANCF20210812002Outflow Valve · faultedDURING TAKE OFF ROLL VENT AVIONICS SYSTEM FAULT APPEARS ON ECAM. AIRCRAFT DIDNT PRESSURIZE DURING FLIGHT. MASK WERE USED AND INMEDIATE RETURN WAS REQUIRED. IN ACCORDANCE WITH TSM 21-26-00-810-804A / AMM 21-26-53-000-002/400-001-A01 THE SKIN AIR OUTLET VALVE 2Aug 10, 2021 · N567AV · Airbus A320214SDR HALA2021080900097Outflow Valve · defectiveETOPS - PRIOT TO DEPARTURE AVIONICS VENT OUTLET VALVE FAULT(STUCK IN HALF OPEN POSITION) MANUAL RELEASE HANDLE ALSO STUCK // REMOVE & REPLACED AVIONICS VENT OUTLET VALVE IAW AMM 21-26-53-000-002-A/400-001-A. OPS TEST GOOD PER AMM 21-26-00-710-001-A. O TO CONTIAug 6, 2021 · N228 · Airbus A321271NSDR HALA2021072000077Outflow Valve · openAIR TURN BACK. UNABLE TO MAINTAIN CABIN ALTITUDE. FOUND AUX FLAP PARTIALY OPEN, MAIN FLAP CLOSED IAW MEL 21-26-2. PERFORMED TSM 21-31-00-810-888-A. NO DAMAGE FOUND. TESTED GOOD. PRESSURIZED A/C TO 5.8 DPS. PRESSURE HOLD PER AMM 2131-00-710-802-A. OK FOR Jul 20, 2021 · N391HA · Airbus A330243SDR AALA202106299015Outflow Valve · faultedAIRCRAFT WAS GROUNDED: VENT SKIN VALVE FAULT "OUTLET VALVE OPEN" VENT BLOWER FAULT JUST AFTER TAKEOFF. AIRCRAFT RETURNED TO LAX WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. (NO EMERGENCY WAS DECLARED) REPLACED SKIN AIR OUTLET VALVE AND ACCOMPLISHED A SATJun 28, 2021 · N106NN · Airbus A321231SDR AALA202106259006Outflow Valve · inoperativeAIRCRAFT WAS GROUNDED: DURING CRUISE AT FL 350 AND IN DESCENT TO APPROXIMATELY FL240, THE V/S FT/MIN NEEDLE FLUCTUATES FROM -650 TO +150 WITH OUTFLOW VALVE NEEDLE MOVING. ACCOMPLISHED OPS TEST OF SAFETY VALVES POSITION INDICATOR PER AMM 21-31-00. ALL CHECKS GOJun 23, 2021 · N717UW · Airbus A319112SDR CALA2021060700803Outflow Valve · damagedSKIN VALVE FAULT DISPLAYED ON UPPER ECAM SCREEN. - V ENT REMOVED AND REPLACED SKIN AIR OUTFLOW VALVE OPS CHECKS GOOD REF AMM 21-26-53-400-001-A ROTABLE PARTS CHANGE WAS INDICATED - TT # 1939473 SN OFF 3533 VALVE, SKIN AIR OFF 31-2125-9-0001 3533 ON 31-2125-9Jun 7, 2021 · N483UA · Airbus A320232SDR 4DPA2021060200001Hinge · brokenAFTER TAKEOFF CAB ALT PRESSURE WAS AMBER AND ROSE WITH THE AIRCRAFT. IT LEAKED AT ABOUT 9800 FT AND THE AIRCRAFT ALTITUDE WAS APPROX 11.3. WE DESCENDED BACK TO 10000 AND THE CAB ALT HELD WITHIN 200 FT WHATEVER ALT THEY WERE AT. COMPLETED EMB 135 AMM 21-31-00Jun 2, 2021 · N260JX · Emb EMB135LRSDR QXEA2021060100274Outflow Valve · malfunctionedLOSS OF PRESSURIZATION AT 16,000' MASTER CABIN PRESS. DID CABIN PRESS CHECKLIST, DROVE TO PRESSURIZATION FAIL CHECKLIST THEN DROVE ME TO MANUAL PRESSURIZATION CHECKLIST. THEN DUE TO BEING UNABLE TO CONTROL PRESSURE IN MANUAL DROVE ME TO UNPRESSURIZED FLIGHT CHJun 1, 2021 · N437QX · Bombdr DHC8402SDR GTIA2021060735771Outflow Valve · faultedVENT SKIN VALVE FAULT ON TAKE OFF ( SKIN AIR OUTLET VALVE )-R&R SKIN AIR VALVE FIN 22HQ OPS CHECK GOOD IAW AMM 21-26-53. THIS CLEARS DMI 277789701 MOC NOTIFIED PLACARD REMOVEDMay 29, 2021 · N923NK · Airbus A320271NSDR CALA2021051900699Outflow Valve · failedON DESCENT AT APPROX 20000 FEET CABIN ALT BEGAN TO CLIMB. GOT CA B PRSAFETY VALVE OPEN ECAM PFR SHOWED NO COORELATED FAILURE MESSAGES.PERFORMED CPC TESTS NO FAULTS NOTED. #2 PER AMM 21-31-00-710-002-A. BOTH CONTROLLERS PASSED WITH NO FAULTS. ALSO NEITHER CONTRMay 19, 2021 · N419UA · Airbus A320232SDR AALA202105199009Seal · tornAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORT AIR LEAK SQUEAL, APPROXIMATING A FIRE ALARM IN VOLUME, FROM TAKEOFF TO FL 380. CONTINUED ENTIRE CLIMB AND DESCENT. FLUSHING ANY LAVATORY GAVE "CONTINUED" TEMPORARY RELIEF FROM NOISE. CABIN PRESSURE AT 380 WAS APPMay 18, 2021 · N936NN · Boeing 737823SDR GTIA2021051335733Outflow Valve · faultedVENT BLOWER FAULT / EXTRACT FAULT-REMOVED AND REPLACED AIR SKIN OUTLET VALVE. OPS CKD NORMAL IAW AMM 21-26-53.May 12, 2021 · N933NK · Airbus A320271NSDR DALA2021042202363Outflow Valve · damagedSHIP 3771 -ATB/PRESS- RETURNED TO BOS DUE TO UNABLE TO CONTROL PRESSURIZATION AFTER TAKEOFF. CORRECTIVE ACTION: MAINTENANCE REPLACED THE GROUND AIR INLET VALVE PER 737 AMM 21-31. OPS TEST OK, AIRCRAFT RETURNED TO SERVICE.Apr 22, 2021 · N3771K · Boeing 737832
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