# SDR 2005UALA00438

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2005
- Submitted: May 17, 2005
- Operation: Air carrier
- Aircraft: [N496UA](https://openairdocs.org/aircraft/N496UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1845
- Aircraft time: 8,979 hours, 3,851 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Bleed Air Sys
- Condition: Tripped
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: J, G
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005UALA00438

## Discrepancy

NUMBER 1 BLEED TRIPPED OFF.  CABIN DEPRESSURIZED.  NUMBER 2 BLEED AND APU PREVIOUSLY DEFERRED. NR 1 BLEED TRIPPED 45 MINUTES AFTER TAKEOFF. NR 2 AND APU WERE PREVIOUSLY DEFERRED INOP.  AT 9000 FEET, NR 1 BLEED WAS TURNED BACK ON AND APPEARED TO HOLDING STEADY.  REPLACED NR 1 ENGINE FAN AIR SENSOR/THERMOSTAT CONTROL (7170HM) PER IPC-36-11-06-06B.  ALSO REPLACED RIGHT PACK RAM AIR INLET ACTUATOR (28HH) PER MM-21-61-51 DUE TO FAILURE DURING TEMPERATURE CONTROL TEST.  OP CHECKS NORMAL.   MR21603, PCN 565-9202

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