Service difficulty report · Probe · Boeing 777222

Difficulty date
July 7, 2008
Submitted
December 23, 2008
Operation
Air carrier
Aircraft
N798UA
Make and model
Boeing 777222
Aircraft serial
26928
Aircraft time
44,978 hours, 6,765 cycles
Engine
Pwa PW40903
Part
Probe
Part number
1833KTU01
Condition
Faulty
Location
Fuel Tank
Stage of operation
CR
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 IMBALANCE MSG DISPLAYED. LEFT TANK FUEL QTY INDICATOR IS FAILING. SHOWED 3.5 LOW, HAS HISTORY. IDENTIFIED SEVERAL PROBES WITH POSSIBLE FAULTS. PROBES REPLACED (REPLACED NR 1, 3 & 6 LEFT CENTER TANK UNITS), CLOSING UP & LEAK CHECKING. OP CHECKS NORMAL.