# SDR ASAA1159613

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2011
- Submitted: May 10, 2011
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 11,792 hours, 3,733 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1159613

## Discrepancy

AUTOFAIL ILLUMINATED ON PRESSURIZATION CONTROL PANEL.  SWITCHED PRESS CONTROL FROM AUTO TO MANUAL TO AUTO AUTOFAIL LIGHT EXTINGUISHED.  PRESS CTLR NR 1 AND NR 2 SHOW NO EXISTING FAULTS AND NO FAULT HISTORY LOGGED FOR 57 FLTS.  TROUBLESHOT PER FIM 21 21 00 810 801 BOTH PRESS CTLRS BITE CHECK NORMAL.

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