Service difficulty report · Control Unit · Boeing 777222

Difficulty date
September 12, 2010
Submitted
September 15, 2010
Operation
Air carrier
Aircraft
N797UA
Make and model
Boeing 777222
Aircraft serial
26924
Aircraft time
56,023 hours, 8,060 cycles
Engine
Pwa PW4090
Part
Control Unit
Part number
285W02591
Part serial
D00247
Condition
Defective
Location
Left
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

PDCU L LT PANEL DATA CONCENTRATOR UNIT (PDCU) IS FAULTED. REPLACED THE DEFECTIVE PDCU. OPS ARE OK.