Service difficulty report · Rib · 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
Rib
Condition
Cracked
Location
Zone 300
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

LEFT HORIZONTAL STAB TIP FAIRING RIB NR 2 (FWD TO AFT) CRACKED. REPAIRED IAW SRM 55-10-09-2R-12, REPAIR REV 107. NO FURTHER DEFECTS NOTED.