# Service difficulty reports: JASC 2134

A list on [JASC 2134](https://openairdocs.org/jasc/2134.md).

Reports filed under 2134 · Cabin Pressure Sensor, newest first.

- [SDR AALA202607077246](https://openairdocs.org/sdr/AALA202607077246.md): Sensor · faulted · Jul 3, 2026 · N996NN · Boeing 737823
  > AIRCRAFT WAS GROUNDED: AIRCRAFT PRESSURIZATION ISSUE. CABIN ALTITUDE WAS STUCK AT 0 DURING CLIMB TO 10000 FT. HAD NO CABIN RATE OF CLIMB DURING THE CLIMB. OUTFLOW VALVE POSITION SHOWED SLIGHTLY OPEN BUT NEVER MOVED UNTIL MANUAL OPERATING IT TO FULL OPEN PRIOR
- [SDR 7C7A2022042600016](https://openairdocs.org/sdr/7C7A2022042600016.md): None · intermittent · Apr 4, 2022 · N880EA · Dhav DHC8106
  > DE-ICE PRESS LIGHT ILLUMINATED DE-ICE BOOTS CEASED OPERATION REMOVED AND REPLACED DE-ICE PRESS CAUTION LT. PRESSURE SWITCH. RAN ENGINES OPS CHECKED GOOD
- [SDR DALA2018012200356](https://openairdocs.org/sdr/DALA2018012200356.md): Pressure Switch · contaminated · Jan 16, 2018 · N905DA · Doug MD9030
  > PERFORMED AN AIR TURN BACK TO MSP DUE TO PRESSURIZATION ISSUES. ON CLIMB OUT, BELOW 8000 FEET, FLOW LIGHT ILLUMINATED. COMPLIED WITH QRH. PACKS DID NOT RE-ESTABLISH UNTIL DESCENT. NO EMERGENCY WAS DECLARED. MAINTENANCE TROUBLESHOT AND FOUND WATER IN DELTA P
- [SDR 2017FA0000480](https://openairdocs.org/sdr/2017FA0000480.md): Pressure Switch · failed · Sep 7, 2017 · N420FP · Diamon DA40
  > PRESSURE SWITCH FAILED THAT CONTROLS THE HOBBS METER AND THE FAILURE ALLOWED OIL TO FLOW OUT OF THE ENGINE. THE PROBLEM WAS FOUND DURING A PRE-FLIGHT INSPECTION OF THE AIRCRAFT. ESTIMATED THAT THE AIRCRAFT WOULD HAVE 1GT OF OIL AN HOOUR OR MORE WITH THE OIL LO
- [SDR WX0A2015010772333](https://openairdocs.org/sdr/WX0A2015010772333.md): Warning System · activated · Jan 6, 2015 · N873GA · Doug DC983
  > CABIN ALT WARNING ANNUNCIATOR COME ON DURING CLIMB THROUGH 12000 FEET. WE DECLARED AN EMER & RETURNED. QRH PROCEDURES WERE EXECUTED SUCCESSFULLY, LOUD NOISE ON L2 DOOR WAS HEARD BY FLIGHT ATTENDANTS & SOME PAXS.
- [SDR WX0A072334](https://openairdocs.org/sdr/WX0A072334.md): Sensor · malfunctioned · Jan 4, 2015 · N869GA · Doug DC983
  > AT FL 320, AFTER LEVEL OFF, RIGHT PACK PRESS DROPPED TO 0. COMPLIED WITH QRH 21-5. CABIN ALTITUDE CONTINUED TO CLIMB, DURING DESCENT, CABIN ALT WARNING LIGHT ILLUMINATED. COMPLIED WITH QRH 21-2, PAX O2 MASK DEPLOYED. PERFORMED TASK CARD F0443601, NO DEFECT
- [SDR AALA20120923011](https://openairdocs.org/sdr/AALA20120923011.md): Sense Line · loose · Sep 23, 2012 · N9627R · Doug DC983
  > ORD - CREW REPORTED UNABLE TO PRESSURIZE AIRCRAFT AFTER TAKEOFF. THE OUTFLOW VALVE WAS CLOSED AND LEFT PACK SHOWED 50 ON THE PRESSURE GAUGE. RIGHT PACK WAS ON A PLACARD INOPERATIVE. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT R
- [SDR USAA20101217BB091](https://openairdocs.org/sdr/USAA20101217BB091.md): Warning Switch · malfunctioned · Dec 16, 2010 · N205UW · Boeing 75723N
  > FLL FLT 921 EN-ROUTE AUA TO PHL. DURING CRUISE, THE COCKPIT CREW OBSERVED A CABIN ALTITUDE WARNING. THE FLIGHT DESCENDED DOWN TO 10,000 FEET AND DIVERTED TO FLL. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED A CABIN ALTITUDE WARNING SW
- [SDR AALA2009032600002](https://openairdocs.org/sdr/AALA2009032600002.md): Switch · inoperative · Mar 26, 2009 · N7549A · Doug DC982
  > BNA - INFLIGHT DFW-LGA. CREW REPORTED PRESSURIZATION LOSS. MASKS DID NOT DEPLOY. EMERGENCY DECLARED, LANDED BNA WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED BOTH SECOND SEGMENT CLIMB PRESSURE SWITCHES. SYSTEM GROUND CHECK NORMAL OPERATION.
- [SDR AALA200802237](https://openairdocs.org/sdr/AALA200802237.md): Pressure Switch · inoperative · Aug 28, 2008 · N593AA · Doug DC983
  > LAX INFLIGHT T1960/28AUG. BOTH AIR CON PACKS WENT TO ZERO FLOW ON CLIMB. ACFT WOULD NOT PRESSURIZE. RETURNED TO LAX AND LANDED WITHOUT INCIDENT. REPLACED BOTH LT AND RT HAND SINGLE ENGINE SECON SEGMENT CLIMB PRESSURE SWITCHES. SYSTEM GROUND CHECKED NORMAL
- [SDR 2008FA0000053](https://openairdocs.org/sdr/2008FA0000053.md): Pressure Sensor · malfunctioned · Jan 17, 2008 · N55FN · Lear 35A
  > LOSS OF CABIN PRESSURE AT 25K FT. PRESSURE SENSOR MALFUNCTIONED
- [SDR CA070530006](https://openairdocs.org/sdr/CA070530006.md): Warning System · activated · May 30, 2007 · Boeing 727225
  > (CAN) AFTER DEPARTURE, WHEN AT 13,000 FEET ALT WARNING HORN SOUNDED AND COULD NOT BE SILENCED WITH THE HORN CUTOUT. CREW TRIED SWITCHING TO STBY WITH NO RESULTS. HORN CONTINUED ON APPROACH. AT TIME OF INITIAL HORN, CABIN PRESSURE WAS 5000 FT AND 5PSI DIF. THE
- [SDR AWXA200700685](https://openairdocs.org/sdr/AWXA200700685.md): Valve · failed · May 20, 2007 · N812AW · Airbus A319132
  > PHL - CREW REPORTED, DURING CLIMB TO F250 PACK 2 TRIPPED. TEMP 32 DEG C ZONE OUTPUT 92 DEG F, PACK FLOW STAYED IN THE LO POSITION. MX REMOVED AND REPLACED NR 2 PACK FLOW CONTROL VALVE PER AMM 21-51-51- 401, OPS/LEAK CHECK WAS GOOD.
- [SDR BSAASDR0709](https://openairdocs.org/sdr/BSAASDR0709.md): Pressure Switch · shorted · Apr 27, 2007 · N3199Q · Beech 1900D
  > DURING CLIMB, BOTH ENVIR FAIL LIGHTS CAME ON, CREW RETURNED TO STATION WITH NO FURTHER INCIDENT. LEFT SYSTEM WAS INITIALLY REPAIRED BY REPLACING PRECOOLER THRU VALVE & BYPASS VALVE. AFTER EXTENSIVE TROUBLESHOOTING, THE RIGHT SYSTEM WAS REPAIRED BY REPLACING
- [SDR 105102006TB](https://openairdocs.org/sdr/105102006TB.md): Pressure Switch · inoperative · Oct 11, 2006 · N31RX · Bolkms BO105LSA3
  > THE EMS FLIGHT WAS EN ROUTE TO HOME BASE IN REDDING, CALIFORNIA, AFTER A CANCELLED SCENE CALL 20 MILES TO THE NORTHEAST. THE PILOT NOTICED THE ILLUMINATION OF THE NR 2 TRANSMISSION OIL PRESSURE CAUTION LIGHT IN THE COCKPIT. THERE WERE NO SECONDARY INDICATION
- [SDR XN0A1250](https://openairdocs.org/sdr/XN0A1250.md): Warning Light · malfunctioned · Aug 2, 2005 · N224KW · Airbus A300B4203
  > ON TAXI, GROUND AUX VALVE FAULT LIGHT REMAINED ON. DMI GROUND AUX LIGHT REF MEL 21-34-05 AND DMI 5606 CAT "C". PLACARDS INSTALLED.
- [SDR 0500669601](https://openairdocs.org/sdr/0500669601.md): Line · kinked · Apr 30, 2005 · N601NW · Doug DC932
  > AT FL340, CREW NOTICED THE CABIN ALTITUDE CLIMBING THROUGH 10,000 FEET. A RAPID DESCENT WAS INITIATED AND COMPLIED WITH COM PROCEDURES. CONTROL OF THE CABIN PRESSURE WAS REGAINED ON DESCENT WHEN THE AIRFOIL ANTI-ICE WAS SECURED. AIRCRAFT CLIMBED BACK UP TO
- [SDR CA041012007](https://openairdocs.org/sdr/CA041012007.md): Pressure Switch · out of tolerance · Oct 8, 2004 · Dhav DHC8201
  > (CAN) CABIN ALTITUDE CLIMBED DURING DESCENT WITH LOW ENGINE POWER SELECTED. CABIN ALTITUDE WARNING (CABIN PRESS) LIGHT ILLUMINATED AND CREW USED FIXED OXYGEN SYSTEM UNTIL CABIN ALTITUDE WAS RESTORED. OPERATIONAL CHECK OF ENGINE HP VALVES CARRIED OUT IAW AMM 21
- [SDR 0039](https://openairdocs.org/sdr/0039.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION, THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESS CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE PURCHAS
- [SDR 0038](https://openairdocs.org/sdr/0038.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION, THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESS CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE PURCHAS
- [SDR 0037](https://openairdocs.org/sdr/0037.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION, THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESS CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE PURCHAS
- [SDR 0036](https://openairdocs.org/sdr/0036.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION, THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESS CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE PURCHAS
- [SDR 0035](https://openairdocs.org/sdr/0035.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION, THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESS CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE PURCHAS
- [SDR 0034](https://openairdocs.org/sdr/0034.md): Pressure Switch · out of limits · Jun 22, 2004 · N222BE · Lear 35A
  > DURING A 2400 HOUR INSPECTION THE ABSOLUTE PRESSURE WARNING SWITCH FOR THE PRESSURIZATION CONTROLLER WAS FOUND TO BE DEFECTIVE. A REPLACEMENT UNIT WAS PURCHASED FROM THE AIRFRAME MANUFACTURER AND WAS ALSO FOUND TO BE OUT OF TOLERANCE. A TOTAL OF 9 UNITS WERE
- [SDR 0032](https://openairdocs.org/sdr/0032.md): Pressure Switch · out of limits · Jun 20, 2004 · N222BE · Lear 35A
  > DURING PERFORMANCE OF A 2400 HOUR INSPECTION THE ABSOLUTE PRESSURE SWITCH FOR THE AURAL WARNING ON THE PRESSURIZATION SYSTEM, FAILED FUNCTION CHECK. THE UNIT IS TOO CLOSE THE SWITCH AND PROVIDE AURAL WARNING TO THE FLIGHT CREW AT 8,750 FEET + OR - 250 FT. TH
- [SDR ARWA20030703](https://openairdocs.org/sdr/ARWA20030703.md): Line · broken · Jul 8, 2003 · N345JW · Doug DC863
  > ON CLIMB OUT HEARD LOUD NOISE AND CABIN CLIMBED, UNABLE TO MAINTAIN CABIN PRESSURE. ENTERED ON DMI NR 17926 IAW MEL 21-65 CAT "C" PLACARD INSTALLED. FOUND VENTURI SENSING LINE BROKEN. REMOVED AND REPLACED SENSING LINE IAW STC ST466CH; PERFORMED OPERATIONA
- [SDR GLBA2002114](https://openairdocs.org/sdr/GLBA2002114.md): Pressure Switch · failed · Jul 31, 2002 · N226GL · Beech 1900D
  > LEFT ENVIROMENTAL FAIL ON CLIMB-OUT, REMOVED AND REPLACE PRESSURE SWITCH OPS CHECK GOOD
- [SDR C2XA01TY116](https://openairdocs.org/sdr/C2XA01TY116.md): Switch · failed · Sep 18, 2001 · N13989 · Emb EMB145LR
  > TYS DURING A SCHEDULED INSPECTION, THE ALTITUDE SENSING SWITCH FOR PASSENGER OXYGEN FAILED OPS CHECK. MAINTENANCE REMOVED AND REPLACED THE ALTITUDE SENSING SWITCH IAW-EMB-145-AMM-35-20-03, OPERATIONAL CHECKED GOOD. THE REPAIR WAS SATISFACTORY AND THE AIRCRA
- [SDR RAIA00107014](https://openairdocs.org/sdr/RAIA00107014.md): Switch · failed · Jul 17, 2001 · N723TE · Aerosp ATR72202
  > 7166-STL-RIGHT BLEED FAULT CAPTION ILLUMINATED DURING CLIMB, AIRCRAFT RETURNED FROM FLIGHT WITHOUT INCEDENT. MAINTENANCE INSPECTED AND REPLACED RIGHT BLEED AIR PRESSURE SWITCH.
- [SDR GLBA2001056](https://openairdocs.org/sdr/GLBA2001056.md): Pressure Switch · failed · Mar 7, 2001 · N219GL · Beech 1900D
  > ABORTED T/O - RIGHT ENVIROMENTAL FAILURE. REPLACED PRESSURE SWITCH, OPS CHECKED SYSTEM GOOD.
- [SDR CA000809012](https://openairdocs.org/sdr/CA000809012.md): Tube · split · Jul 24, 2000 · Beech B200C
  > (CAN) DURING CLIMB CREW OBSERVED A RT BLEED AIR LIGHT. WHEN RT BLEED AIR SWITCHED OFF, LT BLEED WOULD NOT HOLD CABIN PRESSURE. AN EMERGENCY DESCENT WAS CARRIED OUT. AT 7,000 THE AIRCRAFT LEVELED OFF AND RETURNED TO BASE. THE DAMAGED PIECE OF TUBING WAS REPLACE
- [SDR CA000801033](https://openairdocs.org/sdr/CA000801033.md): Pressure Switch · failed · Jul 17, 2000 · Lear 25B
  > (CAN) A/C EXCEDED MAX ALT DUE TO UPDRAFT, A/C PRESSURIZATION SYSTEM ANORIDE SWITCH OPERATED TO SPEC UPON DESCNET SYSTEM OPERATED NORMALLY. I.A.W. L25 MM 21-30-07.
- [SDR RAIA0004016](https://openairdocs.org/sdr/RAIA0004016.md): Connector · failed · Apr 15, 2000 · N426AM · Bag JETSTM3201
  > 7356-STL-AIR, OFF CAPTION ILLUMINATED FOR LEFT AIR CONDITIONING PACK. MAINTENANCE INSPECTED AND DEFERRED PER MEL. MAINTENANCE REPLACED LEFT AIR OFF PRESSURE SWITCH CANNON PLUG CONNECTOR.
- [SDR TWAA9917002](https://openairdocs.org/sdr/TWAA9917002.md): Line · loose · Dec 15, 1999 · N917TW · Doug DC982
  > CRUISING AT FL310 CABIN PRESSURIZATION WAS LOST. PASSENGER OXYGEN MASKS DEPLOYED. MADE AN UNSCHEDULED LANDING AT RNO. TIGHTENED A LOOSE SENSE LINE AT THE LEFT FLOW CONTROL VALVE. CHECK-C 7-13-99 STL.
- [SDR 99ZZZX3662](https://openairdocs.org/sdr/99ZZZX3662.md): Inlet Coupling · failed · Aug 26, 1999 · N700SB · Gulstm G1159A
  > DURING CLIMB-OUT, CREW NOTICED THE CABIN WAS NOT PRESSURIZING (CABIN WAS CLIMBING WITH AIRCRAFT). THE AIRCRAFT THEN RETURNED TO TAKEOFF POINT. INVESTIGATION OF THE AIRCRAFT REVEALED THE INLET COUPLING ON THE PRIMARY HAT EXCHANGER FAILED RESULTING IN NO AIR T
- [SDR SCNA99509](https://openairdocs.org/sdr/SCNA99509.md): Switch · failed · May 10, 1999 · N154SY · Doug DC1015
  > DURING A HEAVY MAINTENANCE VISIT, DURING COMPLETION OF A CABIN LEAK CHECK THE ALTITUDE WARNING HORN FAILED TO GO OFF WHEN THE CABIN ALTITUDE REACHED 12,000 FT. REMOVED AND REPLACED THE CABIN ALTITUDE SWITCH AND THE SYSTEM OPERATIONALLY CHECKS GOOD IAW DC10 MM
- [SDR 98ZZZM772](https://openairdocs.org/sdr/98ZZZM772.md): Transducer · malfunctioned · Mar 30, 1998 · N36PN · Gulstm G1159B
  > LOST CABIN PRESSURIZATION CONTROL AT 37,000 FT, WENT TO MANUAL AND COULD NOT CONTROL. MADE EMERGENCY DESCENT TO 10,000 FT. REPLACED PRESSURIZATION SYSTEM TRANSDUCER, S/N 94-630, WITH REPAIRED UNIT P/N 2100136-1-10, S/N 12-946. PERFORMED CABIN PRESSURIZATION
- [SDR USAASB97128](https://openairdocs.org/sdr/USAASB97128.md): Sensor · malfunctioned · May 12, 1997 · N342US · Boeing 737301
  > CLT - FLT 1594, DURING CRUISE FL350, THE CABIN ALT WARNING HORN WENT OFF AT 10,000 FT CABIN ALT. ALL SYS'S APPEARED TO BE OPERATING NORMAL WITH NO INDICATION OF SYS MALFUNCTION. AT THE TIME OF WARNING HORN, CABIN WAS CLIMBING AT 400 FPM. COULD NOT CONTROL T
- [SDR SWAA960853](https://openairdocs.org/sdr/SWAA960853.md): Sensor · inoperative · Aug 21, 1996 · N51SW · Boeing 7372H4
  > AIRCRAFT RETURNED TO DAL DUE TO RIGHT PACK TRIPPING AND UNABLE TO CONTROL CABIN PRESSURE. REMOVED AND REPLACED 450 DEGREE SENSOR, RT RAM AIR SENSOR AND PERFORMED TEST FLIGHT PER BOEING M/M.
- [SDR 95ZZZW95](https://openairdocs.org/sdr/95ZZZW95.md): Press Sensor · failed · Jan 13, 1995 · N1269L · Doug DC932
  > ON CLIMB-OUT, PRESSURIZATION UNCONTROLLABLE IN AUTO AND MANUAL. AUTO PILOT PREVIOUSLY ON MEL. FLIGHT RETURNED TO ATL. REPLACED CABIN PRESSURE DIFFERENTIAL SENSOR.

## 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 = '2134'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/2134/reports

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