# SDR ASAA2015021110619

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2015
- Submitted: February 13, 2015
- Operation: Air carrier
- Aircraft: [N469AS](https://openairdocs.org/aircraft/N469AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41702
- Aircraft time: 1,806 hours, 597 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Control Module
- Part number: 71231997302AB
- Part serial: C94120074
- Condition: Failed
- Location: Cabin Pressure
- Part time: 1,452 hours, 505 cycles
- Stage of operation: TX
- 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/ASAA2015021110619

## Discrepancy

BOTH LED WINDOWS ON THE PRESSURIZATION CONTROLLER WILL NOT ILLUMINATE.  ACFT GROUNDED.  PRESSURE CONTROL MODULES NR 1 & NR 2 LOGGED PRESSSURE CONTROL MODULE FAULT.  REPLACED PRESSURIZATION CONTROL MODULE.  OPS TEST NORMAL REF TASK 21-31-00-710-801.

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