# SDR ASAA0853321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2008
- Submitted: August 12, 2008
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 7,411 hours, 2,215 cycles
- Engine: Ge CFM567B24
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 71211997101AC
- Part serial: 0060333
- Condition: Faulted
- Location: Cabin Pressure
- Part time: 25,052 hours, 10,552 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0853321

## Discrepancy

AUTO FAIL AND ALTN ILLUMINATED ON PRESSURIZATION PANEL. CYCLED AUTO PRESS SELECTOR CONTROL PANEL SWITCH.  ALTERNATE FAIL LIGHT WENT OUT.  PERFORMED BITE TEST IAW FIM 21-31-00.VERIFY SELECTOR PANEL LRU FAIL FAULT AND CLEARED SYS TEST NORMAL AND OPS OK.  NO HISTORY 30 DAYS. NR 2 CONT.

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