Service difficulty report · Floorbeam · Boeing 747221F

Difficulty date
March 20, 2012
Submitted
March 21, 2012
Operation
Air carrier
Aircraft
N748CK
Make and model
Boeing 747221F
Aircraft serial
21744
Aircraft time
113,005 hours, 25,456 cycles
Part
Floorbeam
Condition
Cracked
Location
Fuselage
Stage of operation
IN
How discovered
E
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

CRACK INDICATION AT BS 440 UPPER DECK FLOORBEAM UPPER CHORD WEB AT APPROX RBL 44.