SDR ASAA2020041332632

Service difficulty report · Warning System · Boeing 737890

Difficulty date: April 12, 2020
Submitted: April 13, 2020
Operation: Air carrier
Aircraft: N519AS
Make and model: Boeing 737890
Aircraft serial: 36482
Aircraft time: 42,533 hours, 12,559 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: TX
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

AFTER START, RECALL SHOWS ZONE TEMP LIGHT. LIGHT DISTINGUISHED ON RESET. GROUNDED - YES. ACCOMPLISHED #2 PACK TEMP CONTROL BITE, LOGGED: TRIM VALVE, FLT DECK . FAULT CLEARED, REF B737-800 FIM 21-62 TASK 801. ACCOMPLISHED CONTROL CABIN AUTO TEMP CONTROL FIM 21-61 TASK 861, OPS NML.