Service difficulty report · Circuit Card · Boeing 757222

Difficulty date
January 28, 2011
Submitted
February 21, 2011
Operation
Air carrier
Aircraft
N544UA
Make and model
Boeing 757222
Aircraft serial
25322
Aircraft time
72,352 hours, 20,832 cycles
Engine
Pwa PW2040
Part
Circuit Card
Part number
285T00931
Part serial
D01620
Condition
Faulty
Location
Lt A/C Pack Temp
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

EICAS MESSAGE 'L PACK TEMP'. PACK INOP LIGHT ON. LIGHT EXTINGUISHING WHEN STBY SELECTED. OPERATED NORM IN STBY. APPLIED MEL 2151G. REPLACED FLOW CONTROL CARD ASSY, NO HELP. REPLACED LOW LIMIT CONTROL VALVE ON LT PACK.