SDR ASAA2018030323734

Service difficulty report · Filter · Boeing 737890

Difficulty date: March 3, 2018
Submitted: March 6, 2018
Operation: Air carrier
Aircraft: N530AS
Make and model: Boeing 737890
Aircraft serial: 36578
Aircraft time: 30,799 hours, 9,153 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Filter
Condition: Dirty
Location: Temp Sensor
Stage of operation: NR
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

ZONE TEMP CONTROL AMBER LIGHT ILLUMINATED DURING RECALL. RESETS WITH MASTER CAUTION. ACFT GROUNDED. PERFORMED PACK ZONE TEMP BITES, FLT DECK TRIM VLV FAULT SHOWN. CLEARED FAULT, SUBSEQUENT BITES SHOW NO FAULTS. FOUND CABIN TEMP SENSOR FILTER DIRTY, CLEANED THE FILTER, OPS CHECKED NORMAL. NO HISTORY 60 DAYS.