Service difficulty report · Display · Boeing 747422

Difficulty date
November 24, 2015
Submitted
November 25, 2015
Operation
Air carrier
Aircraft
N122UA
Make and model
Boeing 747422
Aircraft serial
29168
Aircraft time
66,812 hours, 7,624 cycles
Engine
Pwa PW4056
Part
Display
Condition
Failed
Location
Cockpit
Stage of operation
LD
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

RIGHT PFD ARCED OUT. SPARKS WERE SEEN THEN THE PFD WENT BLANK, POPPED CB & THEN LOTS OF SMOKE. NO FLAMES WERE SEEN. INSPECTED AREA FOR HEAT DAMAGE ASSOC WITH ARCING, NONE FOUND. REPLACED FIRST OFFICERS PFD IAW MM 31-61-02 P401, MM 31-61-01 & REF IPC 31-11-26-005.