SDR ASAA2013121712157

Service difficulty report · Filter · Boeing 737890

Difficulty date: December 17, 2013
Submitted: December 20, 2013
Operation: Air carrier
Aircraft: N512AS
Make and model: Boeing 737890
Aircraft serial: 39043
Aircraft time: 20,530 hours, 6,340 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Filter
Condition: Dirty
Location: Cabin Temp
Stage of operation: TX
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

AFTER PUSH BACK RT PACK ILLUMINATED ON RECALL AND WILL EXTINGUISH ON MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE OF RT PACK/ZONE TEMP CONTROLLER, SHOWS TCV THIS PACK ON BIT AND PREVIOUS FLT ONLY, VERIFY GO. RESET CONTROLLER, ALL 3 GO. INTERMITTENT FAULT REF FIM TASK 21-62, TASK 831. ALSO FOUND ALL 3 CABIN TEMP SENSOR FILTERS VERY DIRTY. REPLACED IAW MM 21-61-06. GROUND VERIFICATION SUCCESSFUL.