Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
March 25, 2018
Submitted
March 27, 2018
Operation
Air carrier
Aircraft
N408AS
Make and model
Boeing 737990ER
Aircraft serial
41732
Aircraft time
21,223 hours, 6,943 cycles
Part
Warning Light
Condition
False Activation
Location
Lt A/C Pack
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 MASTER CAUTION RECALL, THE LEFT PACK LIGHT ILLUMINATED. THE LIGHT WENT OUT ON MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED A PACK TEMPERATURE CONTROL BITE IAW FIM 21-62 TASK 801. PACK TRIP LIGHT NO LONGER ILLUMINATES ON RECALL, RESET SUCCESSFUL.