Service difficulty report · Control Unit · Boeing 767322

Difficulty date
October 22, 2011
Submitted
October 25, 2011
Operation
Air carrier
Aircraft
N668UA
Make and model
Boeing 767322
Aircraft serial
30024
Aircraft time
44,967 hours, 11,972 cycles
Engine
Pwa PW4056
Part
Control Unit
Condition
Out Of Tolerance
Location
Ac Pack
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

L PACK INOP LIGHT ON. EICAS MSG 'L PACK TEMP' DISPLAYED. OPERATED NORM AFTER 'STANDBY' SELECTED. OK IN STANDBY. REPLACED LEFT PACK TEMP CONT'L. OPS CHECKED GOOD.