Service difficulty report · Pressure Switch · Boeing 777222

Difficulty date
November 1, 2010
Submitted
November 8, 2010
Operation
Air carrier
Aircraft
N778UA
Make and model
Boeing 777222
Aircraft serial
26940
Aircraft time
58,656 hours, 10,594 cycles
Engine
Pwa PW4077
Part
Pressure Switch
Condition
Faulty
Location
Fuel Jettison
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

FUEL PUMP CENTER L LEFT CENTER (OVERRIDE) FUEL PUMP SWITCHED ON AND PUMP OUTPUT PRESSURE LOW. ADVISORY MSG-2811015 INACTV ER MODE. REPLACED CENTER LTH OVHRD JETTISON PUMP PRESS SWITCH. REMOVED PUMP AND CHECKED FOR PUMP DEBRIS, NONE FOUND. REQUIRES OP CHECK. NO FAULTS AT THIS TIME. CREW CONFIRMED THAT THE FUEL SYS. OPS NORMAL PRIOR TO ENTERING ETOPS. ACFT OK FOR SERVICE.