Service difficulty report · Apu · Boeing 777222

Difficulty date
January 30, 2013
Submitted
February 14, 2013
Operation
Air carrier
Aircraft
N774UA
Make and model
Boeing 777222
Aircraft serial
26936
Aircraft time
69,224 hours, 12,984 cycles
Engine
Pwa PW4077
Part
Apu
Part number
311500B
Part serial
P1162331
Condition
Making Metal
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

APU AUTO SHUTDOWN, APU CONTROL MESSAGE PRESENT. FUEL CLUSTER METERING VALVE LVDT CIRCUIT FAILED. CHECK OF CHIP DETECTOR FOUND METAL. INSTALLED NEW APU PER MM 49-11-01.