Service difficulty report · Keelbeam · Boeing 747412F

Difficulty date
July 8, 2018
Submitted
July 16, 2018
Operation
Air carrier
Aircraft
N489MC
Make and model
Boeing 747412F
Aircraft serial
26553
Aircraft time
93,789 hours, 16,571 cycles
Part
Keelbeam
Condition
Corroded
Location
Fuselage
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

ATA 53-12, FOUND CORROSION ON KEELBEAM TAPERED LWR CHORD AT STA 1058 WL 91.0 LBL 9 AS MARKED. CORROSION ON KEELBEAM TAPERED LWR CHORD AT STA 1063 WL 91 LBL 9 REPAIRED AS PER EN 1116-18 REV ' - '.