Service difficulty report · Spar Cap · Doug MD11F

Difficulty date
October 1, 2025
Submitted
October 1, 2025
Operation
Air carrier
Aircraft
N590FE
Make and model
Doug MD11F
Aircraft serial
48505
Aircraft time
99,048 hours, 23,606 cycles
System (JASC)
5711 · Wing Spar
Part
Spar Cap
Part number
ARB74141
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 - TRAILING EDGE REAR SPAR LOWER CAP UPPER SURFACE AT STATION XORS 1003 FOUND CORROSION AFTER REMOVAL OF ACCESS PANEL. LEFT WING TRAILING EDGE REAR SPAR LOWER CAP UPPER SURFACE AT STATION XORS 1003 CORROSION REMOVED AND FOUND EXCEEDED LIMIT AS PER MD-11 SRM 57-00-10-1A ALLOWABLE DAMAGE, REAR SPAR UPPER CAP UPPER SURFACE REPAIR CARRIED OUT AS PER EA # 1-5710- T0385028 PART 1. TITLE: WING- BASIC WING STRUCTURE - LH WING LOWER REAR SPAR CAP AFT FLANGE CORROSION REPAIR, XORS 990 TO XORS 1010 AND XORS1020 TO SORS1035. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.

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