SDR UPS07M50387

Service difficulty report · Shear Web · Doug MD11F

Difficulty date: July 6, 2007
Submitted: August 6, 2007
Operation: Air carrier
Aircraft: N289UP
Make and model: Doug MD11F
Aircraft serial: 48455
Aircraft time: 75,126 hours, 12,047 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Shear Web
Condition: Corroded
Location: Fuselage
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

INSPECTION TYPE:C CABIN - CORROSION ON UPPER & LWR SURFACE OF SHEAR WEB AT STA 1966 - 1976 L27 LT. UPPER & LWR SURFACE OF SHEAR WEB CORROSION REMOVED MAT'L ORG THK 0.040" REMV 0.018" REMAIN 0.022" FOUND EXCEED LIMIT PER SRM 53-00-01VI FIG 1A R38. CORROSION SHEAR WEB REMV PER SRM 51-31-01VII R38. NEW WEB FAB USING MAT'L 7075-0-0.040" AS PER DOUGLAS DWG: AGA7145-503. NEW FAB WEB INSTALLED AS PER SRM 51-31-01 VII R38.

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