Service difficulty report · Pressure Switch · Boeing 757222

Difficulty date
December 15, 2010
Submitted
December 17, 2010
Operation
Air carrier
Aircraft
N551UA
Make and model
Boeing 757222
Aircraft serial
25399
Aircraft time
72,598 hours, 20,984 cycles
Engine
Pwa PW2040
Part
Pressure Switch
Part number
S271N3022
Part serial
1459
Condition
Failed
Location
Hyd Reservoir
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

LEFT HYD RESERVOIR OVERHEAD LIGHT AND EICAS LOW RESERVOIR PRESSURE. REPLACED LEFT HYD RESERVOIR PRESSURE SWITCH AND LT RESERVOIR VENT VALVE. IDLE RUN NR1 ENGINE WITH ENGINE BLEED. ALL SYS LIGHTS CHECK NORMAL.