SDR ASAA2015101913441

Service difficulty report · Warning Message · Boeing 737890

Difficulty date: October 19, 2015
Submitted: October 22, 2015
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 36,008 hours, 10,656 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Message
Condition: False Activation
Location: Cabin Temp
Stage of operation: NR
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

CONTROL CABIN ZONE LIGHT ILLUMINATED, EXTINGUISHES ON RECALL. ACFT GROUNDED. ACCOMPLISHED BITE OF THE PACK/ZONE TEMP. CONTROLLERS, REF FIM 21-82, TASK 801 ON NR 2 CONTROLLER FLIGHT DECK TRIM VALVE, FAULT CLEARED. RAN APU & PACKS, FLIGHT DECK TEMP. WAS CONTROLLED HOT & COLD, LIGHT STAYED EXTINGUISHED, INTERMITTENT FAULT.