SDR ASAA2021021634116

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: February 16, 2021
Submitted: February 19, 2021
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 48,992 hours, 14,615 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Light
Condition: False Activation
Location: Cabin Temp
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

DURING PUSH - ZONE TEMP CONTROL CABIN OVERHEAT LIGHT ILLUMINATED COME ON WITH RECALL EXTINGUISHES WITH RESET QRH FOLLOWED. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONT BITE TEST, RESET NR 2 FLT DECK TRIM VALVE FAULT, RUN BITE TEST 4X, ALL PASSED, OPS NML REF B737-800 AMM 21-61-00-700-806-002.