Service difficulty report · Circuit Card · Boeing 747422

Difficulty date
July 23, 2012
Submitted
August 24, 2012
Operation
Air carrier
Aircraft
N199UA
Make and model
Boeing 747422
Aircraft serial
28717
Aircraft time
60,501 hours, 7,097 cycles
Engine
Pwa PW4056
Part
Circuit Card
Part number
285N002836
Part serial
18
Condition
Faulted
Location
Fire Loop
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

'AFT CARGO 4 LP A' EICAS STATUS MSG DISPLAYED. AFT CARGO 4 LOOP A FIRE OR FAULT. REPLACED AFT CARGO FIRE WARNING AND DETECTION CARD A32 AND OPS CHECKED OKAY.