Service difficulty report · Rib · Doug MD11F

Difficulty date
June 10, 2025
Submitted
June 10, 2025
Operation
Air carrier
Aircraft
N521FE
Make and model
Doug MD11F
Aircraft serial
48478
Aircraft time
91,548 hours, 17,992 cycles
Part
Rib
Condition
Cracked
Location
Zone 500
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 WING - FIXED LEADING EDGE RIB DOUBLER AT STATION XOS 789 FOUND CRACK ABOUT 2 INCH. LT WING FIXED LEADING EDGE CRACKED RIB DOUBLER AT STATION XOS 789 REMOVED IAW SRM 51-33-01-0G AND FABRICATED RIB DOUBLER IAW DRAWING ARB3954 REV K. INSTALLED FABRICATED RIB DOUBLER IAW SRM 51-33-01-0G. REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100.

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