Service difficulty report · Skin · Boeing 747422

Difficulty date
November 26, 2013
Submitted
November 27, 2013
Operation
Air carrier
Aircraft
N120UA
Make and model
Boeing 747422
Aircraft serial
29166
Aircraft time
59,645 hours, 6,899 cycles
Engine
Pwa PW4056
Part
Skin
Condition
Corroded
Location
Bs 1480
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

DURING HMV2, FUSELAGE CROWN SKIN INTERNAL SURFACE FOUND CORRODED AT APPROXIMATELY BS 1480 FROM STRINGER 19L - 19R. DAMAGED SKINS SECTIONS WERE REMOVED & NEW FABRICATED SKIN SECTIONS WERE SPLICED IAW ECRA 5331-01788.