SDR UPS08M51482

Service difficulty report · Structure · Doug MD11F

Difficulty date: November 25, 2007
Submitted: January 23, 2008
Operation: Air carrier
Aircraft: N291UP
Make and model: Doug MD11F
Aircraft serial: 48477
Aircraft time: 45,846 hours, 5,703 cycles
System (JASC): 5510 · Horizontal Stabilizer Structure
Part: Structure
Condition: Corroded
Location: Horizontal Stab
Stage of operation: IN
How discovered: 9
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 HORIZ STAB CONSTANT SECTION BARREL NUT BORE NR 36 RT FOUND WITH CORROSION. CORROSION AT B-NUT BORE REMOVED. BORE BOTTOM REMOVED BLEND OUT 0.110" DEEP, BORE REAM TO 2.538" DIAMETER REMN BLEND OUT 0.065" DEEP FOUND EXCEED LIMIT 10X MAG INSP C/O AND FOUND NO CORROSION EVDT. B-NUT BORE, BOTTOM SURFACE BORE DOW N 0.045" DEEPER. REPAIR SLEEVE BUSHING FAB, PROTECTED AND INSTALLED. REPAIR IS ACCEPTABLE PER EN1761-07.

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