Service difficulty report · Frame · Boeing 747428

Difficulty date
January 28, 2017
Submitted
February 21, 2017
Operation
Air carrier
Aircraft
N919CA
Make and model
Boeing 747428
Aircraft serial
25302
Aircraft time
89,251 hours, 13,055 cycles
Part
Frame
Part number
65B01753
Condition
Cracked
Location
Bs 1200
Part time
89,251 hours, 13,055 cycles
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

BS 1200 FRAME AT TENSION TIE ATTACH, FOUND TO HAVE 9 FASTNER HOLES WITH CRACK INDICATIONS AND THE TENSION TIE CHANNEL WAS FOUND TO HAVE 3 FASTENER HOLES WITH CRACK INDICATIONS. - PERFOMED OVERSIZE HOLE REPAIR AT ALL CRACKED FASTENER HOLE LOCATIONS IN ACCORDANCE WITH BOEING SERVICE BULLETIN 747-53A2507 REVISION 2. PERFOMED POST OVERSIZE HOLE REPAIR HFEC INSPECTION OF 12 EACH FASTENER HOLES AND THEY WERE CONFIRMED TO BE CRACK FREE.