# SDR ASAA2015101113456

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 2015
- Submitted: October 15, 2015
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 3,977 hours, 1,300 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Module
- Part number: 10194391001
- Part serial: 2014080031
- Condition: Failed
- Location: Cabin Pressure
- Part time: 3,977 hours, 1,300 cycles
- Stage of operation: NR
- 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/ASAA2015101113456

## Discrepancy

PRESSURIZATION CONTROL PANEL ALTIMETER WINDOW FLICKERS INTERMITTENTLY IN FLIGHT.  ACFT GROUNDED.  R & R CABIN PRESSURE CONTROL MODULE IAW AMM 21-31-02. OPS CHECK NORMAL.

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