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
ARB74131
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 UPPER CAP UPPER SURFACE AT STATION XORS 1046 FOUND CORROSION. LT WING TRAILING EDGE REAR SPAR UPPER CAP UPPER SURFACE AT STATION XORS 1046 CORROSION REMOVED AND FOUND EXCEEDED LIMIT IAW SRM 57-00-10-1A ALLOWABLE DAMAGE, REAR SPAR UPPER CAP UPPER SURFACE REPAIR CARRIED OUT IAW EA 1-5710- T0385134 PART 1. TITLE: WINGS- BASIC WING STRUCTURE -CORROSION, LT OUTER WING REAR SPAR UPPER CAP AFT FLANGE UPPER SURFACE, BETWEEN XORS 1040 AND XORS 1047. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.

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