SDR ASAA2014091709146

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: September 17, 2014
Submitted: September 19, 2014
Operation: Air carrier
Aircraft: N536AS
Make and model: Boeing 737890
Aircraft serial: 35203
Aircraft time: 10,587 hours, 3,084 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Light
Condition: Illuminated
Stage of operation: AP
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

DURING LANDING CHECKLIST AND MASTER CAUTION RECALL, FWD CABIN ZONE TEMP LIGHT ILLUMINATED. WHEN MASTER CAUTION RESET IS PUSHED, LIGHT GOES OUT. ACFT GROUNDED. NR 2 CONTROLLER LOGGED ZONE TRIM VALVE IN BIT. NO FAULTS IN PREVIOUS FLIGHT. ACCOMPLISHED ZONE TEMP CONTROLLER BITE TEST REF MM 21-61-00, FAULT RESET, TEST PASSED.