Service difficulty report · Skin Panel · Boeing 747412F

Difficulty date
September 1, 2026
Submitted
September 1, 2026
Operation
Air carrier
Aircraft
N489MC
Make and model
Boeing 747412F
Aircraft serial
26553
Aircraft time
122,398 hours, 21,317 cycles
Part
Skin Panel
Part number
321U441052
Condition
Cracked
Location
Zone 400
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

NR 1 PYLON NAC STA 228 INBD STRUT SKIN PANEL 452ER CUTOUT CRACKED. CAT C TIME LIMITED REPAIR. CARRIED OUT PERMANENT REPAIR IAW EO 1954A122 IAW SRM 54-50-01, REPAIR 2, & RI-54-50-18436, REV B. NO FURTHER DEFECTS NOTED.