SDR ASAA2014011912406

Service difficulty report · Controller · Boeing 737890

Difficulty date: January 19, 2014
Submitted: January 21, 2014
Operation: Air carrier
Aircraft: N517AS
Make and model: Boeing 737890
Aircraft serial: 35197
Aircraft time: 19,556 hours, 5,896 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Controller
Condition: Faulted
Stage of operation: TX
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

RECEIVED A ZONE TEMP LIGHT, RAN QRH PROCEDURES AND UPON RESETING MASTER CAUTION, LIGHT WENT OUT. ACFT GROUNDED. AUTO TEMP CONTROLLER LOGGED COCKPIT TRIM VALVE FAULT. RAN BOTH AUTO TEMP CONTROLLERS BITE TEST IAW FIM 21-62, TASK 842 AND FAULT CLEARED AND RESET, ZONE TEMP CONTROL, OPS CK GOOD.