# SDR ASAA0853039

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2008
- Submitted: July 1, 2008
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 6,732 hours, 1,984 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Module
- Part number: 8243921003
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0853039

## Discrepancy

"AUTO FAIL" LIGHT AT FL 390 (REPEAT) ALTN=NORM PRESS CABIN CONTROL UNABLE TO DUPLICATE.  ACCOMPLISHED FAULT HISTORY PRESENT STATUS AND GROUND TESTS BOTH 1 AND 2 DCPS OPS CHECK NORMAL.  REMOVED AND REPLACED P5 6 CABIN PRESSURE CONTROL MODULE AS PRECAUTION PER MM 21 31 02.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.