Service difficulty report · Doubler · Doug MD11F

Difficulty date
April 19, 2023
Submitted
April 21, 2023
Operation
Air carrier
Aircraft
N590FE
Make and model
Doug MD11F
Aircraft serial
48505
Aircraft time
95,225 hours, 22,497 cycles
Part
Doubler
Part number
ARB71771
Condition
Corroded
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 - UPPER SURFACE MAIN LANDING GEAR SUPPRT UPPER DOUBLER AT STATION XW 229.5 FOUND CORROSION. UPPER SURFACE MAIN LANDING GEAR SUPPORT UPPER DOUBLER BETWEEN AUXILIARY SPAR AND YW 467 AREA CORROSION REMOVED AND FOUND EXCEED LIMIT AS PER SRM 57-20-01-1A FIGURE 101 ALLOWABLE DAMAGE 1. 0.100 INCH MAXIMUM MATERIAL REMOVE FOR GENERAL CORROSION REMOVAL. CARRIED OUT REPAIR AS PER EA # 1-5730-T0374167 PART 1 ,TITLE: WINGS - PLATES AND SKINS - LH WING - CORROSION FOUND ON MLG SUPPORT UPPER DOUBLER BETWEEN AUX SPAR AND YW 467. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.

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