Service difficulty report · Circuit Card · Boeing 777222

Difficulty date
December 23, 2023
Submitted
December 26, 2023
Operation
Air carrier
Aircraft
N784UA
Make and model
Boeing 777222
Aircraft serial
26951
Aircraft time
106,048 hours, 13,863 cycles
Part
Circuit Card
Part number
8105053
Part serial
C94120122
Condition
Failed
Location
Sta 287.7
Part time
806,037 hours, 713,860 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J, O
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AI CARD EICAS STATUS WING ANTI-ICE (WAI) CONTROL CARD FAILURE. FIM TASK REF : FIM TASK REFERENCE NOT FOUND CMC MSG# 3018893 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: CRUISE NARRATIVE: ARINC SIGNAL GATEWAY (L EFT), RSCF CARD, ASSY, AIR OFF 27-3011-9-0001 0122 ON 0000 CARD, ASSY, AIR OFF 27-3011-9-0001 0122 ON 27-3011-9-0001 5695 MAT SHOWED ACTIVE FOR MAINT MSG 30-18893. REF FIM 30-11 TASK 815. RPL WAI CONTROL CARD REF MM 30-11-02, OPS TEST GOOD, MSG GONE. VERIFIED PROPER SOFTWARE