# SDR ASAA2017122222971

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2017
- Submitted: December 26, 2017
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 9,562 hours, 3,220 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Panel
- Part number: 10194391001
- Part serial: 2015080023
- Condition: Failed
- Location: Cabin Pressure
- Part time: 8,354 hours, 2,796 cycles
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017122222971

## Discrepancy

PRIOR TO DESCENT PRESSURIZATION PANEL WENT DARK.  ACFT  GROUNDED.  REMOVED AND REPLACED THE CABIN PRESSURE CONTROL MODULE IAW AMM 21-31-02-000-801, AND 21-31-02-400-801. ALL TESTS OK.

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