Service difficulty report · Stiffener · Doug MD11F

Difficulty date
August 8, 2007
Submitted
September 28, 2007
Operation
Air carrier
Aircraft
N290UP
Make and model
Doug MD11F
Aircraft serial
48456
Aircraft time
78,001 hours, 12,487 cycles
Part
Stiffener
Condition
Cracked
Location
Rws 568
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 RIGHT WING L/E COMPARTMENT AT STA XORS 568 APPROX FOUND UPPER STIFFENER CRACKED AS MARKED. CRACKED STIFFENER & ATTACH PARTS REMOVED. NEW STIFFENER FABBED USING MAT'L 7075-0-0.071" PER DOUGLAS DWG ARB3954. STIFFENER HEAT TREATED PER DPS 7.00-1 & HARDNESS VALUES HRB 84.0 PER DPS 1.02-3. NEW STIFFENER HOLES P/UP, REPROTECTED & PAINTED. NEW STIFFENER INSTALLED AS PER SRM 51-33-01 VOL II REV 38 & SRM 51-35-01 VOL II REV 38.

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