# SDR 2005UALA01092

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2005
- Submitted: October 11, 2005
- Operation: Air carrier
- Aircraft: [N438UA](https://openairdocs.org/aircraft/N438UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 678
- Aircraft time: 29,005 hours, 10,714 cycles
- Engine: Iae V2527A5
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Malfunctioned
- Location: Nr 2
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005UALA01092

## Discrepancy

FLIGHT DIVERTED WITH THE NR 1 PACK TRIPPING AND NR 2 PACK ALREADY DEFERRED.  AIRCRAFT LOST NR 1 PACK APPROXIMATELY 20 MINUTES AFTER TAKEOFF.  NR 2 PACK PREVIOUSLY DEFERRED.  CIRCUIT BREAKERS CYCLED AND PROVIDED NO HELP.  REPLACED NR 1 RAI ACTUATOR (MR21603-11 WITH MR21603-67), NO HELP.  REMOVED AND REPLACED NR 1 ENGINE BLEED REGULATED PRESSURE TRANSDUCER (644-1251), 8HA1 PER MM 36-11-16-401.  RAN ENGINES AND OP CHECKS AND LEAK CHECKS GOOD.

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