Service difficulty report · Longeron · Boeing 747121

Difficulty date
September 15, 2002
Submitted
October 4, 2002
Operation
Air carrier
Aircraft
N683UP
Make and model
Boeing 747121
Aircraft serial
20353
Aircraft time
81,157 hours, 20,074 cycles
Part
Longeron
Condition
Cracked
Location
Fuselage
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 C CHECK, LT BLG OVERWING LONGERON BS 1413 FOUND TWO CRACKS BOTH CRACKS THROUGH THICKNESS ONE CRACK IS 5.5 INCH INLENGTH ANOTHER ONE CRACK IS 3 INCH IN LENGTH . BS 1413 LT OVERWING LONGERON ANGLE REPAIR CARRIED OUT AS PER HX RS R-53-43-34909 AND RA 747-53-20114.