Service difficulty report · Rib · Doug MD11F

Difficulty date
August 7, 2007
Submitted
October 17, 2007
Operation
Air carrier
Aircraft
N290UP
Make and model
Doug MD11F
Aircraft serial
48456
Aircraft time
78,001 hours, 12,487 cycles
Part
Rib
Condition
Cracked
Location
Lt Wing
Stage of operation
IN
How discovered
9
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

INSPECTION TYPE:C LEFT WING LEADING EDGE HAS NOSE RIB CRACKED BETWEEN SLAT TRACKS 12 AND 13 STICKER 7058. CRACKED RIB REMOVED. NEW RIB FABBED USING MAT'L 7075-0-0.040" PER DWG ARB2922. RIB HEAT TREATED AS PER DPS 7.00-1 & HARDNESS VALUES HRB 83.1 AS PER DPS 1.05-3. NEW RIB HOLES PICKED UP AND PROTECTED. NEW RIB PAINTED & INSTALLED.

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