# SDR ASAA2015121014198

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2015
- Submitted: December 14, 2015
- Operation: Air carrier
- Aircraft: [N478AS](https://openairdocs.org/aircraft/N478AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44105
- Aircraft time: 1,703 hours, 527 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Module
- Part number: 10194391001
- Part serial: 2015050036
- Condition: Failed
- Location: Cabin Pressure
- Part time: 1,690 hours, 520 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/ASAA2015121014198

## Discrepancy

CABIN PRESSURIZATION PANEL LIGHTING DOES NOT DIM WITH PANEL BRIGHTNESS CONTROL. ACFT GROUNDED. VERIFIED DEFECT, ALSO FOUND OUTFLOW VALVE INDICATOR INOPERATIVE. R & R CPC MODULE REF AMM 21-31-02, OPS CHECK NORMAL.

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