Service difficulty report · Warning System · Boeing 737890

Difficulty date
January 2, 2019
Submitted
January 4, 2019
Operation
Air carrier
Aircraft
N558AS
Make and model
Boeing 737890
Aircraft serial
35177
Aircraft time
47,582 hours, 14,061 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
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

AUTO FAIL LIGHT ILLUMINATED WITH GREEN ALT ON. CYCLED TO ALT AND BACK TO AUTO POSITION AND LIGHT (AUTO FAIL) WENT OUT. GROUNDED - YES. NR 1 DCPC INOP. FAULT CODE - 043 - "CONT LRU FAULT". ACCOMPLISHED FIM 21-31 TASK 824. FOUND 1 FAULT OCCURRENCE. ACCOMPLISHED PRESS SYSTEM GROUND TEST REF AMM 21-31-00-700-802. OPS CK GOOD AND CONTROLLER RESET. GROUND VERIFICATION SUCCESSFUL.