SDR ASAA2015110213601

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: November 2, 2015
Submitted: November 4, 2015
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 27,893 hours, 8,538 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Warning Light
Condition: False Activation
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

IN CRUISE GOT "AUTO FAIL" PRESSURIZATION LIGHT, IAW CHECKLIST WENT TO ALTN MODE. PRESSURIZATION NORMAL. ACFT GROUNDED. BITE CHECK OF CPC NR 1 SHOWED NO FAULTS, AND SYSTEM TEST OK. CPC NR 2 SHOWED FAULT CODE 032 LRU FAIL. ACCOMPLISHED FIM 21-31/824, SYSTEM TEST OK AND FAULT RESET. FAULT WAS ONLY ON FLT LEG 00. NO OTHER FAULT HISTORY. GROUND VERIFICATION SATISFACTORY. ALL SYS OP NORMAL, REF FIM 21-31/824, 21-31/801.