Service difficulty report · Frame · Boeing 747412F

Difficulty date
July 4, 2020
Submitted
July 7, 2020
Operation
Air carrier
Aircraft
N489MC
Make and model
Boeing 747412F
Aircraft serial
26553
Aircraft time
99,899 hours, 17,681 cycles
Part
Frame
Condition
Cracked
Location
Bs 2598 Bulkhead
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 2598 BULKHEAD RT INNER CHORD AREA, ONE CRACK FOUND ON THE FWD SPLICE FITTING, SECOND LAYER COUNT FROM INBD. APPROX 0.040" IN DEPTH RUNNING AFT AT 4 O`CLOCK POSITION, THE BULKHEAD UPPER CORNER RT SPLICE FITTING WAS REPAIRED IAW RI-53-00-14106 REV A.