Service difficulty report · Filter · Boeing 747422

Difficulty date
June 5, 2013
Submitted
June 7, 2013
Operation
Air carrier
Aircraft
N107UA
Make and model
Boeing 747422
Aircraft serial
26900
Aircraft time
60,296 hours, 7,109 cycles
Engine
Pwa PW4056
Part
Filter
Condition
Faulty
Location
Nr 4 Engine
Stage of operation
IN
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

"ENG 4 FUEL FILT" EICAS STATUS MSG DISPLAYED. DIFFERENTIAL PRESSURE ACROSS NR 4 ENGINE FUEL FILTER APPROACHES BYPASS. REPLACED FUEL FILTER, LEAK CKS AND OP CKS GOOD IAW MM. IDLE RUN ACPD, ALL SYS NORMAL.