Service difficulty report · Frame · Boeing 747451

Difficulty date
March 19, 2012
Submitted
April 10, 2012
Operation
Air carrier
Aircraft
N664US
Make and model
Boeing 747451
Aircraft serial
23819
Aircraft time
94,936 hours, 11,946 cycles
Part
Frame
Condition
Cracked
Location
Bs 1255
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

FRAME STA 1255, BETWEEN S-4L TO S-5L FOUND ONE WEB CRACK AS MARKED. CRACKED FRAME WEB AT STA 1255 BETWEEN S-4L TO S-5L AREA REMOVED AS PER SRM 51-40-02. NEW WEB FABRICATED AS PER DWG 65B04913 REV E. NEW FRAME WEB AT STA 1255 BETWEEN S-4L TO S-5L AREA INSTALLED AS PER SRM 51-40-02.