# SDR 2008UALA02905

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2008
- Submitted: May 21, 2008
- Operation: Air carrier
- Aircraft: N598UA
- Make and model: Boeing 757222
- Aircraft serial: 28751
- Aircraft time: 37,177 hours, 10,305 cycles
- Engine: Pwa PW2037
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Module
- Part number: 5639005
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: W
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA02905

## Discrepancy

CABIN PRESSURIZATION PROBLEM CAUSED DIVERSION.  MAIN PWR SUPPLY T1 AND FLEX CABLE BAD. A1 CARD (CPU) FAILS LRU TEST 140760.  REPLACED CABIN PRESSURIZATION MODULE., OPS CHECKED NORMAL.


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