Service difficulty report · Structure · Boeing 747422

Difficulty date
July 19, 2007
Submitted
July 20, 2007
Operation
Air carrier
Aircraft
N107UA
Make and model
Boeing 747422
Aircraft serial
26900
Aircraft time
36,489 hours, 4,540 cycles
Engine
Pwa PW4056
Part
Structure
Condition
Corroded
Location
Nr 4 Pylon
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

CORROSION FOUND ON NR 4 PYLON DSB OUTBOARD WING FITTING, 4 EACH ECCENTRIC BUSHINGS AROUND SURFACE, & 4 EACH DSB BEARINGS. [08-14-07] CORROSION FOUND ON NR 4 PYLON DUAL SIDE BRACE OTBD WING FTNG, 4 EACH ECCENTRIC BUSHINGS AROUND SURFACE, & 4 EACH DSB BEARINGS. CORROSION REMOVED REF MM 54-45-98. MODIFICATION ACCOMPLISHED TO CORRECT CORROSION PROBLEM.