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Thu, Dec 31, 2009

AD: Boeing

AD NUMBER: AD 2009-26-04

MANUFACTURER: Boeing Model 737-600, -700, -700C, - 800, and -900 Series Airplanes
SUBJECT: Airworthiness Directive AD 2009-26-04

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This AD requires repetitive lubrication of the left and right main landing gear (MLG) forward trunnion pins; and an inspection for discrepancies of the transition radius, lead-in chamfer, and cross- bolt bore of the MLG forward trunnion pins, and repair or replacement if necessary. Doing the applicable inspections and repairs/ replacements, or overhauling the trunnion pins ends the repetitive lubrication requirements of this AD. For airplanes on which a certain repair is done, this AD requires repetitive inspections for discrepancies of the transition radius. This AD results from a report that the protective finishes on the forward trunnion pins for the left and right MLG might have been damaged during final assembly. We are issuing this AD to prevent cracking of the forward trunnion pin, which could result in fracture of the pin and consequent collapse of the MLG.

DATES: This AD becomes effective February 1, 2010.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/list/2009-26-04?OpenDocument

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