Service difficulty report · Bulkhead · 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
Bulkhead
Condition
Cracked
Location
Fuselage
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

FUSELAGE MAIN FRAME BS 1000 BULKHEAD CHORD STR 37L-STR 39L AFTER INSPECTION FOUND CRACK APPROX 0.75". FUSELAGE MAIN FRAME BS 1000 BULKHEAD CHORD STR 37L- STR 39L CRACKED AREA REPAIRED IAW EO 4453A506 PART 3. THIS REPAIR IS A MAJOR REPAIR.