Service difficulty report · Skin · Boeing 747451

Difficulty date
May 25, 2010
Submitted
May 26, 2010
Operation
Air carrier
Aircraft
N661US
Make and model
Boeing 747451
Aircraft serial
23719
Aircraft time
87,252 hours, 11,640 cycles
Part
Skin
Condition
Corroded
Location
Bs 1240
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 L CHECK FOUND CORROSION IN SKIN AT LT BS 1240 LBL106. REPAIRED IAW ERA480448-14AD SECTION I. SECTION II REQUIRES INSP PRIOR TO ACCUMULATION OF 20,000 TOTAL ACFT CYCLES OR 100,000 FLIGHT HOURS WHICHEVER COMES FIRST. THEREAFTER REPEAT INSP EVERY 8000 CYCLES.