SDR ASAA2016053016891

Service difficulty report · Controller · Boeing 737890

Difficulty date: May 30, 2016
Submitted: June 1, 2016
Operation: Air carrier
Aircraft: N594AS
Make and model: Boeing 737890
Aircraft serial: 35191
Aircraft time: 31,678 hours, 9,579 cycles
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Condition: Malfunctioned
Location: Cabin Pressure
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PRESSURIZATION CONTROLLER IN AUTO, AUTO FAIL LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED DCPC BITE PROCEDURE, NO FAULTS NOTED. SELECTED PRESSURE MODE SELECTOR FROM MANUAL TO AUTO, LIGHT EXTINGUISHED. INTERMITTENT FAULT, NO HISTORY IN PAST 30 DAYS. REF FIM 21-31, TASK 801.