Service difficulty report · Frame · Boeing 747121

Difficulty date
February 11, 2007
Submitted
March 16, 2007
Operation
Air carrier
Aircraft
N683UP
Make and model
Boeing 747121
Aircraft serial
20353
Aircraft time
90,184 hours, 22,066 cycles
Part
Frame
Condition
Cracked
Location
Bs 780
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 RIGHT BS 780 FRAME TENSION TIE ATTACHMENT AREA AT FASTENER HOLE NR 1 AND NR 9 BOTH FOUND CRACK AT FAILSAFE CHORD AT 5:00 O/C POSITION. APPROX .0625 & .125 INCH LONG. M/D BS 780 RIGHT FRAME BELOW STR 11R FAILSAFE CHORD REPLACED AS PER RS R53-25-35745 AND UPS EO B747-5310-26128.