SDR FDEA202608051085

Service difficulty report · Bulkhead · Doug MD11F

Difficulty date: August 5, 2026
Submitted: August 17, 2026
Operation: Air carrier
Aircraft: N613FE
Make and model: Doug MD11F
Aircraft serial: 48749
Aircraft time: 85,137 hours, 20,989 cycles
System (JASC): 5412 · Nacelle/Pylon, Bulkhead/Firewall
Part: Bulkhead
Part number: AUB7525501
Condition: Corroded
Location: Zone 400
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

NR 1 ENG PYLON AFT BULKHEAD LUG BORE HOLE FOUND WITH CORROSION AFTER SPHERICAL. BEARING REMOVED. CORROSION AT NR 1 ENG PYLON AFT BULKHEAD LUG BORE HOLE CARRIED OUT REPAIR IAW EA 1-5440-T0388257, PART 1. INSPECTION FINDINGS, THIS EA DEVIATES FROM EO 1-5440- E0385675. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.

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