Service difficulty report · Warning System · Boeing 737890

Difficulty date
July 25, 2018
Submitted
July 27, 2018
Operation
Air carrier
Aircraft
N593AS
Make and model
Boeing 737890
Aircraft serial
35107
Aircraft time
39,419 hours, 12,007 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
CR
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

DURING CRUISE NR 2 SOURCE OFF LIGHT ILLUMINATED. PERFORMED QRH, STARTED APU AND BROUGHT ON LINE. GROUNDED - YES. PERFORMED SOURCE OFF LT ILLUMINATE-FAULT ISOLATION IAW FIM 24-21 TASK 823, ALL CKS NORMAL, NO FAULTS NOTED.