Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
December 7, 2013
Submitted
December 9, 2013
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
2,919 hours, 921 cycles
Part
Sensor
Condition
Dirty
Location
Cockpit 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

LEFT PACK LIGHT ILLUMINATED ON RECALL. LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. BITE CHECK OF NR 1 AND 2 ZONE TEMP CONTROLLERS SHOWS NO FAULTS. CLEANED COCKPIT TEMP SENSOR. RAN BITE ON BOTH ZONE TEMP CONTROLLERS. ALL OPS NORMAL. NO HISTORY 90 DAYS. REF MM 21-61-00.