Service difficulty report · Pressure Switch · Boeing 777222

Difficulty date
March 2, 2011
Submitted
March 11, 2011
Operation
Air carrier
Aircraft
N210UA
Make and model
Boeing 777222
Aircraft serial
30216
Aircraft time
39,652 hours, 8,726 cycles
Engine
Pwa PW4077
Part
Pressure Switch
Condition
Leaking
Location
Apu Fuel Pump
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

FUEL LEAK LEFT INBD AREA NEAR FUEL PUMP BAY AREA. APU DC FUEL PUMP ONLY LEAKING AT PRESS SWITCH WHEN PUMP IS RUNNING. WHEN PUMP IS OFF AND DURING FUELING VERIFIED NO LEAKS OUT OF PUMP.