Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
September 14, 2015
Submitted
September 16, 2015
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
928 hours, 296 cycles
Part
Warning Light
Condition
False Activation
Location
Cabin Temp
Stage of operation
NR
How discovered
9
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

ON RECALL, ZONE TEMP F/O CONTROL CAB ILLUMINATED. LIGHT WENT OUT ON RECALL. ACFT GROUNDED. RESET FAULT ON ZONE TEMP CONTROLLER. ACCOMPLISHED PACK ZONE TEMP CONTROLLER BITE, WITH NO DISCREPANCIES NOTED. RAN PACKS FOR A WHILE THE RE-ACCOMPLISHED PZTC BITE WITH NO FAULTS LOGGED. NO PRIOR HISTORY 90 DAYS, REF FIM 21-62/807.