Service difficulty report · Skin · Boeing 747422

Difficulty date
August 4, 2012
Submitted
August 14, 2012
Operation
Air carrier
Aircraft
N116UA
Make and model
Boeing 747422
Aircraft serial
26908
Aircraft time
55,918 hours, 6,507 cycles
Engine
Pwa PW4056
Part
Skin
Part number
321U45426
Condition
Cracked
Location
Nr 4 Nacelle
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

CRACK ON 4 ENGINE PYLON BY SCREW HEAD, CRACK IS 2.5 INCHES LONG. TEMP REPAIR MADE PER MM 54-50 -99 PG 801.