SDR ASAA2015033111190

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: March 31, 2015
Submitted: April 2, 2015
Operation: Air carrier
Aircraft: N517AS
Make and model: Boeing 737890
Aircraft serial: 35197
Aircraft time: 24,321 hours, 7,277 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Light
Condition: False Activation
Location: Temp
Stage of operation: NR
How discovered: 9
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

ZONE TEMP CAUTION, CONT CAB, EXTINGUISHES WHEN M/C RESET. ACFT GROUNDED. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE PROCEDURE, REF FIM 21-62, TASK 801. FOUND FAULT ON NR 2 CONTROLLER FOR FLIGHT DECK TRIM VALVE. FAULT CLEARED ON SYS TEST. RAN APU AND PACKS, TEMP CONTROL, OPS NORMAL. GROUND VERIFIED GOOD. OK FOR CONTINUED SERVICE. NO HISTORY PAST 60 DAYS.