REMOVED AND REPLACED LWR FWD CARGO OVERBOARD VALVE PER AMM 21-26-17/401. TEST PASSED. PERFORMED CABIN PRESSURE LEAKAGE TEST PER AMM 05-51-08 - [SDR A6WA202610098918](https://openairdocs.org/sdr/A6WA202610098918.md): Outflow Valve · faulted · Oct 9, 2026 · N435AW · Cndair CL6002B19 > DURING CLIMB RECEIVED CABIN ALT CAUTION MESSAGE AT ABOUT 11,000 FT THEN RECEIVED CABIN ALT WARNING SOON AFTER. DESCENDED TO 8,000 FT PRESSURIZATION STABILIZED. AIRCRAFT REMOVED FROM SERVICE. FOUND OVERBD AND INBD EXHAUST VALVES DEACTIVATED INCORRECTLY. SECUR - [SDR CALA2026101220301](https://openairdocs.org/sdr/CALA2026101220301.md): Outflow Valve · faulted · Oct 9, 2026 · N15712 · Boeing 737724 > THIS IS A LEVEL"A" CHRONIC FOR AUTO FAIL LIGHT ILLUMINATED AND ALTN LIGHT ILLUMINATED. HAD SEVERAL LRU'S REPLACED DUE TO DECAY CHECK ISSUES. BITE FAULTED CPC1 OFV OR WIRING. CHANGED OUTFLOW VALVE AND TS WIRING TO OUTFLOW VALVE T/S IAW FIM 21-31 TASK 801. WI - [SDR L4OA202609300216](https://openairdocs.org/sdr/L4OA202609300216.md): Outflow Valve · mismanufactured · Sep 30, 2026 · N295N · Cessna 525C > TEXTRON ALERTED US THAT THE OUTFLOW VALVES ON SOME OF THEIR NEW DELIVERIES WERE PRODUCED BY A VENDOR WITH AN UNCERTIFIED TOOL. THE AFFECTED PARTS WERE ON 2 PLANES THAT WE HAVE TAKEN DELIVERY OF BUT NOT YET ON OUR 135 CERTIFICATE. THESE PARTS WERE ALSO ON 2 OTH - [SDR ASAA2026092166991](https://openairdocs.org/sdr/ASAA2026092166991.md): Outflow Valve · malfunctioned · Sep 21, 2026 · N216HA · Airbus A321271N > ATB, AIRCRAFT UNABLE TO PRESSURIZE. ACCOMPLISHED BY VENT AVNCS SYS FAULT ECAM. ECAM ACTIONS COMPLETE HOWEVER STILL UNABLE TO PRESSURIZE. GROUNDED - YES. VERIFIED SKIN AIR OUTLET VALVE WAS SLIGHTLY OPEN. REAPPLIED MEL 21-26-04. VERIFIED MAIN FLAP CLOSED AND INT - [SDR I5PA2026091768811](https://openairdocs.org/sdr/I5PA2026091768811.md): Actuator · inoperative · Sep 17, 2026 · N688SL · Boeing 757230 > ETOPS SIGNIFICANT REPORT - CABIN AUTO 2 SYSTEM ON MEL - REPLACED OUTFLOW VALVE ACTUATOR PER AMM - [SDR CALA2026091619463](https://openairdocs.org/sdr/CALA2026091619463.md): Computer · faulted · Sep 14, 2026 · N874UA · Airbus A319132 > ON TAKE OFF AROUND 85KTS WE GOT VENT SKIN FAULT. AFTR INITIAL EC AM ACTION S.VENT BLOWER/EXTRACT POST FLIGHT REPORTS VENT SKIN VALVE FAULT ATA2126, VENT BLOWER FAULT ATA2126, AND VENT EXTRACT FAULT ATA2126 SEE ATTACHED. REF TSM 21-26-00-810-853-A AND 21-26-00 - [SDR UIEA2026091400877](https://openairdocs.org/sdr/UIEA2026091400877.md): Outflow Valve · faulted · Sep 14, 2026 · N851GT · Boeing 74787UF > AFTER LEVEL OFF AT 340, SLOWLY LOST CABIN PRESSURISATION TO APPROX 10,900. BOTH OUTFLOW VALVES VERIFIED CLOSED. DESCENDED AND RETURNED TO VCP. TRANSFER TO DMI 259214 PER MEL 21-31-02A CAT C. R & R LWR FWD CARGO OVERBOARD EXHAUST VALVE IAW AMM 21-26-17-000-8 - [SDR CALA2026083119023](https://openairdocs.org/sdr/CALA2026083119023.md): Outflow Valve · faulted · Aug 29, 2026 · N649UA · Boeing 767322 > CABIN ALT AUTO 1 EICAS M THE AUTOMATIC PRESSURIZATION CONTROLLER 1 BITE FOUND A FAILURE. CABIN ALT UP TO APPROX 13000 FEETAS PER TOMC REQUEST REPLACED CABIN AUTO 1 PRESSURE CONTROLLER IAW AMM 21-31-02-004-00 & AMM 21-31-02-404-005 UP TO SECTION 3(D)1. REPLACE - [SDR DALA2026081804716](https://openairdocs.org/sdr/DALA2026081804716.md): Outflow Valve · faulted · Aug 17, 2026 · N135DQ · Airbus BD5001A10 > DIVERTED TO MCI DUE TO CABIN ALT CAUTION MESSAGE. REPLACED OUTFLOW VALVE. (LP 7530509 - AIRCRAFT WAS GROUNDED) - [SDR CALA2026081418625](https://openairdocs.org/sdr/CALA2026081418625.md): Actuator · faulty · Aug 11, 2026 · N649UA · Boeing 767322 > CABIN ALTITUDE EICAS WARNING. CABIN ALTITUDE 10000 FT PILOTS REPORT EICAS WARNING AT FL330. AT THE TIME CABIN PRESSURE SHOWED 10000 WITH DIFFERENTIAL PRESSURE AT 7. ON DESCENT TO FL320 CABIN PRESSURE SHOWED 8500 WITH DIFFERENTIAL REMAINING AT 7. PERFORMED B - [SDR YENA2026070600510](https://openairdocs.org/sdr/YENA2026070600510.md): Module · failed · Jul 5, 2026 · N2193J · Airbus A321271NX > FLT # 620, SAN-BOS. (ETOPS) "CAB PR2 FAULT; T/S REF TSM 21-31-00-810-849-A & REMOVED & REPLACED OUTFLOW VLV ELECTRONICS MODULE 2 (10HL2) REF AMM 21-31-51. PERFORMED OPERATIONAL TEST REF AMM 21-31-51-710-051-A ON CH 1 & 2. BOTH TEST OK.." - [SDR 3EJA865JS062926](https://openairdocs.org/sdr/3EJA865JS062926.md): Outflow Valve · failed · Jun 26, 2026 · N865JS · Cessna 560XL > AFTER DEPARTURE FROM KSLC PASSING THROUGH 8000’, NOTICED THE CABIN WAS NOT PRESSURIZING. - [SDR CALA2026062617359](https://openairdocs.org/sdr/CALA2026062617359.md): Outflow Valve · faulted · Jun 24, 2026 · N17244 · Boeing 737824 > IN DESCENT THROTTLES IDLE NOTICABLE PRESS BUMP. NEEDLE SHOWS 300 0 DN THEN RECOVERS PILOT CLARIFIED NEEDLE DN FLUCTUATED TO 3000 AND BEHAVED ERRATICALLY. CONTROLLER FAULT 19 OFV. REMOVED AND REPLACED AFT OUTFLOW VALVE ASSY. OPS CHECKS & GROUND CHKD SYS OKAY - [SDR NACA2026062200001](https://openairdocs.org/sdr/NACA2026062200001.md): Outflow Valve · failed · Jun 22, 2026 · N409YK · Boeing 737436 > CABIN ALT WARNING IN CRUISE. UNCONTROLLABLE IN AUTO OR STANDBY. WAS CONTROLLABLE IN MANUAL MODE. CR FLT 320 FOR ABOUT 30 MINS. REMOVED AND REPLACED CABIN PRESS OUTFLOW VALVE, OPS CHECK GOOD REF B737-400 AMM 21-31-11 - [SDR DALA2026061703628](https://openairdocs.org/sdr/DALA2026061703628.md): Outflow Valve · faulted · Jun 17, 2026 · N394DX · Airbus A321211 > ATB - DUE TO VENT SKIN VALVE FAULT AND VENT BLOWER FAULT. REPLACED SKIN AIR OUTLET VALVE (22HQ) AND INLET BYPASS VALVE 16HQ. (LP 8096796 - AIRCRAFT WAS GROUNDED) - [SDR DALA2026060103319](https://openairdocs.org/sdr/DALA2026060103319.md): Outflow Valve · faulted · May 29, 2026 · N831MH · Boeing 767432ER > ATB- DUE TO AUTO PRESSURIZATION CONTROL INOP. REPLACED AUTO PRESSURE CONTROL MOTORS. REPLACED OUTFLOW VALVE. OPS CHECK NORMAL. (8831542) (AIRCRAFT GROUNDED) - [SDR FDEA202605250637](https://openairdocs.org/sdr/FDEA202605250637.md): Actuator · stuck · May 25, 2026 · N662FE · Airbus A300F4605R > AIR RETURN IN RJAA DUE TO CABIN PRESSURE 1 & 2 FAULT. FORWARD OUTFLOW VALVE STUCK FULL OPEN. NO EMERGENCY OR PRIORITY DECLARED. R & R FWD OUTFLOW VALVE ACTUATOR PER AMM 21-31-12-04. - [SDR 2026FA0000350](https://openairdocs.org/sdr/2026FA0000350.md): Outflow Valve · faulted · May 9, 2026 · N525CR · Cessna 525B > CABIN DEPRESSURIZED AT FL 450. CABIN RATE CLIMBED AT 3000 FPM, CABIN ALT STOPPED CLIMBING AT 15,000' - [SDR FDEA202605090575](https://openairdocs.org/sdr/FDEA202605090575.md): Outflow Valve · faulted · May 9, 2026 · N657FE · Airbus A300F4605R > EXCESSIVE CABINET ALTITUDE WARNING DURING DECENT PASSING THROUGH 14,000FT. COMPLIED WITH ECAM & EXPEDITED OUR DECENT. BOTH OUTFLOW VALVES SHOWED CLOSED & AMBER AND OUTFLOW VALVE WAS FULLY OPEN. - [SDR UIEA2026042200238](https://openairdocs.org/sdr/UIEA2026042200238.md): Outflow Valve · faulted · Apr 22, 2026 · N1511A · Boeing 767383 > CABIN ALTITUDE EICAS MSG WARNING. PERFORMED EMERGENCY DESCENT TO 10,000 FT @ FL330, DIFF PSI 60-7.0, CABIN ALT 10000-11000 FT. NOTED OUTFLOW VALVE WAS APPROX HALF OPEN, NO CHANGE W/ AUTO 2 OR AUTO 1, WAS A SLOW RATE DECOMPRESSION.(
PERFORMED BITE TEST OF CAB - [SDR DXTA2026041307591](https://openairdocs.org/sdr/DXTA2026041307591.md): Outflow Valve · defective · Apr 9, 2026 · N726QS · Bombdr BD1001A10 > IN CRUISE AT FL410, WE GOT A "AUTO PRES FAIL" EICAS MESSAGE. IMMEDIATELY STARTED A DECENT TO A LOWER ALTITUDE AND RAN CHECKLIST BUT THE CABIN PRESSURE WOULD NOT RESPOND TO MANUAL INPUTS. THE CABIN WAS CLIMBING AT ABOUT 4400FPM AT THIS POINT SO WE WENT ON O2 - [SDR YENA2026040600375](https://openairdocs.org/sdr/YENA2026040600375.md): Outflow Valve · failed · Apr 6, 2026 · N990JL · Airbus A321231 > FLT 1207, FLL-LAS. AN EMERGENCY WAS DECLARED, AIRCRAFT RETURNED TO FLL, VENT SKIN VALVE FAULT AFTER TAKE OFF COMPLETED ECAM ACTIONS WOULDN'T RESET, RETURNED TO FLL, PERFORMED AN OVERWEIGHT LANDING 4600 LBS OVER TOUCHDOWN AT 300 FT/MIN, REMOVED AND REPLACED - [SDR AALA202603027466](https://openairdocs.org/sdr/AALA202603027466.md): Outflow Valve · faulted · Feb 27, 2026 · N161AA · Airbus A321231 > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAS DUE TO THE FLIGHT CREW REPORTING A VENT SKIN VALVE FAULT AFTER TAKEOFF. THE FLIGHT CREW ACCOMPLISHED THE ECAM PROCEDURE WHICH LIMITED THE AIRCRAFT TO 10000 FEET ALTITUDE. THE AIR - [SDR CALA2026021713840](https://openairdocs.org/sdr/CALA2026021713840.md): Window · leaking · Feb 14, 2026 · N77543 · Boeing 7379 > PRESSURE LEAK ON CA SIDE WINDOW. LOUD AT 4.5 PSID FOUND DRAIN HOE IN BETWEEN WINDOW AND JAM. PROBABLE CAUSE OF LEAK. CORRECTED HOSE PRESSURIZED AND FOUND NO LEAKS IAW AMM 05-51-91-790-801. - [SDR 3EJA202603250001](https://openairdocs.org/sdr/3EJA202603250001.md): Outflow Valve · failed · Feb 13, 2026 · N301JT · Honda HA420 > CABI ALT HIGH CAS/DEPRESSURIZATION AT FL290. R&R OUTFLOW VALVE. - [SDR 3EJA20260310326](https://openairdocs.org/sdr/3EJA20260310326.md): Outflow Valve · failed · Feb 13, 2026 · N301JT · Honda HA420 > CABI ALT HIGH CAS/DEPRESSURIZATION AT FL290. EXECUTED EMERGENCY PROCEDURES AND DIVERTED TO FXE. /R & R OUTFLOW VALVE. - [SDR WX0A2026030432749](https://openairdocs.org/sdr/WX0A2026030432749.md): Outflow Valve · faulted · Feb 13, 2026 · N331NV · Airbus A319111 > (AIRCRAFT NOT GROUNDED) (EMERGENCY DECLARED) CAB PRESS EXCESS CAB ALT AT CRUISE. / REMOVED AND REPLACED PRESS CONT 2 (12HL) REF. AMM 21-31-34-000-001 AND REF. AMM 21-31-34-400-001. REMOVED AND REPLACED OUTFLOW VALVE (10HL) REF. AMM 21-31-51-000-001 AND REF. AM - [SDR CALA2026020913643](https://openairdocs.org/sdr/CALA2026020913643.md): Outflow Valve · faulted · Feb 6, 2026 · N898UA · Airbus A319132 > FOUND BLOWN DUCT ON RT SIDE AFT E&E BAY. PT NO. DOESNT BREAK REMOVED BLOWN DUCT FROM AFT E&E BAY REF IPC 21-26-01-14B, 21-26-01-18A. LEFT DAMAGED DUCT IN AFT E&E. PULLED CIRCUIT BREAKERS D5, D6, Y17, AE02 FOR MX, REF AMM 21-26-11 REMOVED BLOWN DUCT FROM AFT E& - [SDR CALA2026020413548](https://openairdocs.org/sdr/CALA2026020413548.md): Outflow Valve · defective · Feb 2, 2026 · N847UA · Airbus A319131 > SAFETY VALVE STUCK OPEN CPC 1 TESTS OK. SUGGEST REPLACING CAB PR SAFTEY VALVE 6HL AND CPC 2. REF AMM 21-31-52/401 CONFIG 00. ENSURE SAFETY VALVE 7HL IS CLOSED UNLESS IT CAN BE POSITIVELY DETERMINED WHICH SAFETY VALVE OPENED, PER TSM 21-31-00-810-808-A, NEED T - [SDR I5PA2026020168804](https://openairdocs.org/sdr/I5PA2026020168804.md): Outflow Valve · faulted · Jan 30, 2026 · N688SL · Boeing 757230 > OUTFLOW REQUIRES MANUAL OPERATION TO OPEN ON THE GROUND. R & R OUTFLOW VALVE ACTUATOR IAW AMM 21-31-04. - [SDR HVUA202605120811](https://openairdocs.org/sdr/HVUA202605120811.md): Outflow Valve · fod · Jan 28, 2026 · N641AT · Pilats PC1247 > NEARING TOP OF CLIMB THE CABIN CONTINUED A SHALLOW CLIMB PAST THE SCHEDULED CABIN ALTITUDE. IN RESPONSE THE PILOT DONNED HIS OXYGEN MASK AND INSTRUCTED PASSENGERS TO DO THE SAME WHILE HE EXECUTED A NORMAL DESCENT. AN EMERGENCY DESCENT WAS NOT PERFORMED. THE MA - [SDR YENA2026012200061](https://openairdocs.org/sdr/YENA2026012200061.md): Outflow Valve · faulted · Jan 21, 2026 · N2142J · Airbus A321271NX > FLT 115 JFK - SFO (ETOPS). VENT AVNCS SYS FAULT ON ECAM ( SKIN AIR OUTLET VALVE (AVIONICS)).; (RESOLVED ON W/O: 1470897 TASKCARD: NR-00003) REMOVED AND REPLACED SKIN AIR OUTLET VALVE 22HQ W/ REF TO AMM 21-36-53 OPC600D. MDDR CLRD MX4 UPDATED PLACARD REMOVE - [SDR G1IA202601194102](https://openairdocs.org/sdr/G1IA202601194102.md): Outflow Valve · failed · Jan 14, 2026 · N393GF · Beech B300 > RAPID DECOMPRESSION AT FL310, IMMEDIATE LOSS OF CABIN PRESSURE TO A CABIN ALTITUDE AROUND 17,000 FT. DIFFERENTIAL SLOWLY DECREASED FROM THERE UNTIL THE DIFFERENTIAL WAS AT ZERO. WE WERE REQUIRED TO USE THE OXYGEN MASKS AND DESCEND TO 10,0000 FT. DURING DECENT - [SDR DXTA2026011306507](https://openairdocs.org/sdr/DXTA2026011306507.md): Outflow Valve · faulty · Jan 11, 2026 · N689QS · Cessna 560XL > ON DEPARTURE CABIN WAS NOT PRESSURIZING AND THE RATE OF CLIMB INDICATOR WAS MIRRORING THE AIRCRAFTS VERTICAL SPEED. WE TRIED MANUAL PRESS AND THE CHERRY PICKER WITH NO SUCCESS. MASKS DID NOT DEPLOY WE NEVER EXCEEDED 6000' AND WE WERE UNDER MAX LANDING WEIGHT F - [SDR DALA2026010600101](https://openairdocs.org/sdr/DALA2026010600101.md): Outflow Valve · inoperative · Jan 5, 2026 · N328NB · Airbus A319114 > DIVERTED TO JFK DUE TO A PRESSURIZATION ISSUE. AVIONICS VENT, SKIN AIR OUTLET VALVE APPEARS TO HAVE FAILED PARTIALLY OPEN. CORRECTIVE ACTION: REPLACED THE 22HQ, SKIN AIR OUTLET VALVE. (LP: 8069838) - [SDR DXTA2026010506407](https://openairdocs.org/sdr/DXTA2026010506407.md): Outflow Valve · faulted · Jan 2, 2026 · N912QS · Cessna 680A > FLIGHT CREW COMPLIED WITH MAINTENANCE PROCEDURE IN MEL. AIRCRAFT DID NOT PRESSURIZE IN AUTO. CORRECTIVE ACTION: REMOVED OUTFLOW VALVE CONTROLLER P/N: 65000062-9 S/N: 65000062-00472 AND INSTALLED CUSTOMER SUPPLIED "REPAIRED" OUTFLOW VALVE CONTROLLER P/N: 65000 - [SDR YENA2026010200005](https://openairdocs.org/sdr/YENA2026010200005.md): Outflow Valve · faulted · Dec 30, 2025 · N2142J · Airbus A321271NX > FLT #1487 BOS-LAX (ETOPS), VENT AVIONIC FAULT SKIN AIR OUTLET VALVE ( SKIN AIR OUTLET VALVE (AVIONICS).; PERFORMED BITE TEST OF AEVC IAW AMM 21-26-00. TEST OK. - [SDR SWIA20251223021](https://openairdocs.org/sdr/SWIA20251223021.md): Outflow Valve · obstructed · Dec 21, 2025 · N929EV · Cndair CL6002B19 > EMERGENCY DESCENT DUE TO RAPID DEPRESSURIZATION AT 33K FT. CALL FROM FA ABOUT A LOUD BANG FOLLOWED BY LOSS OF PRESSURIZATION. RAN QRC & QRH, LANDED WITHOUT ANY ISSUES. (FLIGHT 5053) DURING PRESSURIZATION OPS CHECKS FOUND ONCE 6.0 DELTA P IS REACHED RATE INDI - [SDR AALA202512181561](https://openairdocs.org/sdr/AALA202512181561.md): Outflow Valve · faulted · Dec 16, 2025 · N407AN · Airbus A321253NX > AIRCRAFT GROUNDED: AN EMERGENCY DECLARED AT INITIAL CRUISE, RECEIVED ECAM CABIN PRESSURE SYS 1 FAULT FOLLOWED SHORTLY BY ECAM CABIN PRESSURE SYS 1 & 2 FAULT. CREW REPORTED CABIN PRESSURIZATION OPS IN MANUAL MODE OKAY. FLT CREW REPORTED DURING INITIAL DESCENT I - [SDR AALA202512122151](https://openairdocs.org/sdr/AALA202512122151.md): Outflow Valve · failed · Dec 11, 2025 · N956AN · Boeing 737823 > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: AUTO PRESSURIZATION FAIL LIGHT CAME ON DURING CLIMBING THROUGH FL340. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT ORD. REMOVED AND REPLACED AFT OUTFLOW VALVE ASSEMBLY. PER AMM 21-31-03. - [SDR ANCF20251215038](https://openairdocs.org/sdr/ANCF20251215038.md): Outflow Valve · faulted · Dec 10, 2025 · N740AV · Airbus A320214 > VENT SKIN VALVE FAULT AT 4500 FT PROCEDURE DONE AND UNSUCCWAFUL RETURNED TO VUP. IAW AMM 21-26-00-040-002-A STEP 4.A.7.10 POSITION OF THE SKIN AIR OULET VALVE WAS VERIFY TO 45° AFTER DEACTIVATION. WAS FOUND WITH AMBAR XX ON ECAM. SUBSCUENTLY THE SKIN AIR OU - [SDR AALA202512168232](https://openairdocs.org/sdr/AALA202512168232.md): Outflow Valve · failed · Dec 7, 2025 · N862NN · Boeing 737823 > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: SHORTLY AFTER LEVEL OFF AT FL370, CABIN ALTITUDE ALERT SOUNDED AND FLASHED, MANUALLY DEPLOYED MASKS. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT PIT. GVI OF APU AIR DUCT BOOT. REMOVED AND REPLACED OUTFLOW - [SDR YENA2025120101131](https://openairdocs.org/sdr/YENA2025120101131.md): Outflow Valve · failed · Nov 28, 2025 · N2027J · Airbus A321271NX > FLT#1817, JFK-POS. (ETOPS) (AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO JFK) WHILE CLIMBING AIRCRAFT WOULD NOT PRESSURISE, NO PRECEDURE ON 2RM, AIR RETURN; PER TSM TASK 21-31-00-810-8090A. ACCOMPLISHED WIRING CHECK PER AMM 21-31-51. OPS CHECK NORMAL - [SDR DALA2025111908442](https://openairdocs.org/sdr/DALA2025111908442.md): Outflow Valve · faulted · Nov 16, 2025 · N376NW · Airbus A320212 > ATO - BELOW 80KTS DUE TO A VENT SKIN VALVE FAULT. DEFERRED THE AVIONICS COOLING SKIN AIR OUTLET VALVE PER MEL AND CONTINUED. LATER REPLACED THE SKIN AIR OUTLET VALVE. (LP: 8022576) - [SDR YENA2025110701091](https://openairdocs.org/sdr/YENA2025110701091.md): Outflow Valve · faulted · Nov 5, 2025 · N968JT · Airbus A321231 > FLT#2801, FLL-LAX. (AN EMERGENCY WAS DECLARED) "CABIN PPRESS SYS 1 & 2 FAULT 36000'.78 ECAM & QRH ACCOMPLISHED; REF L/P 'S 4441610 R/R OUTFLOW VALVE,4441611-4441612-AND 4441613 PERFORMED CPC1+2 BITE AND TEST OPS CHECK OUTFLOW VALVE AND SAFETY VALVE A - [SDR CALA2025102210399](https://openairdocs.org/sdr/CALA2025102210399.md): Outflow Valve · faulted · Oct 22, 2025 · N77538 · Boeing 737824 > CABIN ALT WARNING ON DESCENT, CABIN ALT 10/11 THOUSAND FT. COMPLIED WITH CABIN ALT QRC DEFER AUTO 1, BRIEFED OTBND CREW. PERFORMED DCPC BITE CK 1 FAULT REPORTED CODE 017. PULLED & COLLARD PRESSURIZATION CONTROL AUTO 1 CB ON P6-4 PANEL MEL 2114A REJECTING MEL - [SDR P5CA2025101800093](https://openairdocs.org/sdr/P5CA2025101800093.md): Outflow Valve · faulted · Oct 18, 2025 · N858GT · Boeing 74787UF > AT FLT 310, CABIN PRESSURE BECAME UNCONTROLLABLE. OUTFLOW VALVES WERE INDICATING FULLY CLOSED. CABIN ALTITUDE WAS CLIMBING 200 FPM.(
COMPLETED THE FOLLOWING CHECKS PER BOEING SR: CABIN SYSTEM CONTROL PRESSURE TEST AMM TASK 21-31-00-735-011 AND EXCESSIVE CABI - [SDR 2DYA2025081300011](https://openairdocs.org/sdr/2DYA2025081300011.md): Outflow Valve · failed · Oct 17, 2025 · N705KW · Boeing 767336 > CABIN AUTO, INOP AT FL230 CABIN ALTITUDE 1 & 2 FAILED THE CABIN HOLD ONLY IN MANUAL MODE. 17-OCT-25 LP 60280 - [SDR DALA2025100707282](https://openairdocs.org/sdr/DALA2025100707282.md): Outflow Valve · damaged · Oct 4, 2025 · N352NB · Airbus A319114 > SHIP 3152 - ATB - DUE TO CAB PR SYS 2 FAULT ECAM WARNING FOLLOWED BY CAB PR SYS 1 2 FAULT ECAM WARNING. CORRECTIVE ACTION: FOUND BROKEN DRILL BIT BETWEEN OUTFLOW VALVE AND THE CUTOUT FRAME NOT ALLOWING THE OUTFLOW VALVE TO CLOSE PROPERLY. REMOVED FOD AND OUTFL Next page: https://openairdocs.org/jasc/2133/reports.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 ``` This list as a web page: https://openairdocs.org/jasc/2133/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.