Service difficulty report · Pump · Boeing 777222

Difficulty date
October 29, 2008
Submitted
November 3, 2008
Operation
Air carrier
Aircraft
N769UA
Make and model
Boeing 777222
Aircraft serial
26921
Aircraft time
53,233 hours, 10,008 cycles
Engine
Pwa PW4077
Part
Pump
Part number
568129115004
Condition
Failed
Location
Fuel Boost
Stage of operation
IN
How discovered
O
Nature of condition
W
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 R FWD RIGHT FORWARD (BOOST) FUEL PUMP SWITCH ON AND PUMP OUTPUT PRESSURE LOW. STATUS MSG01- ACTIVE CLIMB MODE DEPENDENT; RELAY (R FWD FUEL BST PMP SWITCH) IN P110 IS NOT IN COMMANDED POSITION. DB- ELMS P110 ELECTRONICS UNIT MSG-2811007 ACTIVE CL MODE. FOUND FAULTY BOOST PUMP. REPLACED RIGHT FWD BOOST PUMP. OP CHECKS GOOD.