Service difficulty report · Floor Support · Boeing 747451

Difficulty date
May 2, 2012
Submitted
May 3, 2012
Operation
Air carrier
Aircraft
N666US
Make and model
Boeing 747451
Aircraft serial
23821
Aircraft time
95,648 hours, 11,953 cycles
Part
Floor Support
Condition
Cracked
Location
Bs 1700-1720
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

DURING INSPECTION FOUND CRACK AT THE FLOOR SUPPORT WEB UPPER CHORD AT BS 1700 TO 1720, RBL 67.0. MAINTENANCE REMOVED FLOOR SUPPORT WEB AREA PER SRM 51-40-02. NEW UPPER CHORD FABRICATED AS PER BOEING DWG 65B08914 REV Y. NEW UPPER CHORD ANGLE AT CABIN BS 1700 TO 1720 RBL 67.0 FLOORBEAM WEB AREA INSTALLED AS PER SRM 51-40-02.