Service difficulty report · Impeller · Boeing 777222

Difficulty date
January 23, 2019
Submitted
January 25, 2019
Operation
Air carrier
Aircraft
N768UA
Make and model
Boeing 777222
Aircraft serial
26919
Aircraft time
92,605 hours, 16,702 cycles
Part
Impeller
Part number
568129115002
Condition
Failed
Location
Fuel Pump
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

FUEL PUMP R AFT EICAS STATUS MSG. COMPLIED WITH REQUIREMENTS PER AMM 28-22-05-400-801 STEPS 15 THRU 18. RPL R AFT BOOST PUMP MOTOR IMPELLER PER AMM 28-22-05-000-801 AND AMM28-22-05-400-801. OPERATED PUMP OP CHKED NORMAL, NO STATUS MESSAGE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1262019 SN OFF 0440. C/W CDCCL REQUIREMENTS FOR BONDING JUMPER INSTALL AND SECURITY AND SEALANT AND RESISTANCE CKS OK. IPC REFERENCE # 28-22-05-01 MOTOR, AY-MAIN OFF 27-2821-9-0001 0440 ON 25-2822-9-0009 2276. PRECAUTIONARY SWING SHIFT R&E REPLACED CB E27 ON THE 210 PANEL. RPL R AFT BOOST PUMP FUEL PRESSURE SWITCH PER AMM28-42-01-000-80 1 REMOVAL, AND 28-42-01-420-801 INSTALLED. OP CHK AND LEAK CHK GOOD.