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Thu, Oct 04, 2012

AD: The Boeing Company Airplanes (Model 777)

AD NUMBER:  2012-19-10

PRODUCT: Certain Boeing Model 777 airplanes.
SUBJECT: Airworthiness Directive  2012-19-10
ACTION: Final Rule

SUMMARY:  This AD was prompted by heat damage and cracks at the pivot joint location of the main landing gear (MLG) inner cylinder/truck beam. This AD requires repetitive lubrication of the MLG pivot joints; repetitive detailed inspections of the outer diameter chrome on the center axles of the MLG for chicken-wire cracks, corrosion, and chrome plate distress; repetitive magnetic particle inspections of the outer diameter chrome on the center axles of the MLG for cracks; and related investigative and corrective actions if necessary.

The FAA is issuing this AD to detect and correct cracking in the MLG center axle and shock strut inner cylinder lugs (pivot joint), which could result in fracture of the MLG pivot joint components and consequent collapse of the MLG.

DATES: This AD is effective November 7, 2012.

FMI: AD

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