Service difficulty report · Skin · Boeing 747121

Difficulty date
August 17, 2006
Submitted
October 2, 2006
Operation
Air carrier
Aircraft
N682UP
Make and model
Boeing 747121
Aircraft serial
20349
Aircraft time
104,700 hours, 26,436 cycles
Part
Skin
Condition
Corroded
Location
Bs 1140
Stage of operation
IN
How discovered
9
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

INSPECTION TYPE:C M/D BS1140 LBL106-108 WING CTR SECTION UPPER SURFACE FOUND CORRODED. CORROSION BLEND OUT 0.028" BY 1" BY 3" EXCEED SRM LIMIT. CORROSION REMOVED AND REPROTECTED AS PER SRM 51-10-01 AND 51-10-02 ORIGINAL THICKNESS .0445" BLEND OUT DEPTH 0.028" BY 1" BY 3" WITHIN SRM 57-30-01 FIG 1 LIMITS. INSPECTION WITH 10X MAGNIFING GLASS.