Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
December 22, 2019
Submitted
December 24, 2019
Operation
Air carrier
Aircraft
N457AS
Make and model
Boeing 737990ER
Aircraft serial
36355
Aircraft time
23,214 hours, 7,524 cycles
Part
Warning Light
Condition
False Activation
Location
Rt A/C Pack
Stage of operation
NR
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

RIGHT PACK LIGHT CAME ON DURING MASTER CAUTION RECALL AND LIGHT WENT OUT ON MASTER CAUTION RE-SET. GROUNDED - YES. PERFORMED FIM 21-53 TASK 821. ON NR 1 AND 2 PACK TEMP CONTROLLERS. ON PACK TEMP CONTROLLERS, NO FAULTS FOUND. ON ''VERIFY" GO" LIGHT ILLUMINATED. CANNOT DUPLICATE FAULT AT THIS TIME.