SDR ASAA2015042511513

Service difficulty report · Controller · Boeing 737990ER

Difficulty date: April 25, 2015
Submitted: April 29, 2015
Operation: Air carrier
Aircraft: N440AS
Make and model: Boeing 737990ER
Aircraft serial: 41705
Aircraft time: 5,766 hours, 1,889 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Controller
Condition: Malfunctioned
Location: Cabin Temp
Stage of operation: NR
How discovered: 9
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

CONT CABIN ZONE TEMP LIGHT ILLUMINATED, UPON DEPARTURE FOLLOWED QRH LIGHT WENT OUT AFTER MASTER CAUTION RESET WAS PUSHED. ACFT GROUNDED. PERFORMED BITE CHECK ON NR 1 & 2 ZONE TEMP CONTROLLER, NO FAULTS NOTED, ZONE TEMP LIGHT REMAIN EXTINGUISHED AND NO 30 DAY HISTORY, REF FIM TASK21-62, TASK 801.