Service difficulty report · Floorbeam · Boeing 747121

Difficulty date
March 11, 2006
Submitted
April 5, 2006
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
106,939 hours, 27,146 cycles
Part
Floorbeam
Condition
Cracked
Location
Bs 380
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

BS 380 FLOORBEAM UPPER CHORD HORIZONTAL AFT FLANGE HOLE AT LBL 10 CRACKED RUNNING AFT APPROX 0.030" LONG. BS 380 FLOORBEAM UPPER CHORD HORIZONTAL AFT FLANGE LBL 10" REPAIRED AS PER UPS EO NR B747-5310-23043 APPENDIX D FIG 9 PLAN C.