SDR UPS07M50743

Service difficulty report · Structure · Doug MD11F

Difficulty date: July 30, 2007
Submitted: September 28, 2007
Operation: Air carrier
Aircraft: N289UP
Make and model: Doug MD11F
Aircraft serial: 48455
Aircraft time: 75,126 hours, 12,047 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 HORIZONTAL STAB CONSTANT SECTION BARREL NUT BORE LEFT NR 17 FOUND WITH CORROSION. CORROSION AT BARREL NUT BORE REMOVED PER SRM 51-21-01 VII R38. BORE BOTTOM RMN BLEND OUT 0.030" DEEP. REAMED TO 1.067" DIA & RMN BLEND OUT 0.070" DEEP, EXCEED LIMITS. BARREL NUT BORE, BLEND OUT VOID & BOTTOM PERIPHERY RADIUS, SMOOTHEN & PROTECTED. SLEEVE BUSHING FAB, PROTECTED & INSTALLED. REPAIR C/O AT BARREL NUT BORE NR 17 LT ACCEPTABLE PER EN1477-07.

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