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Mon, Nov 07, 2011

AD: Bombardier, Inc. Airplanes

AD NUMBER: 2011-23-09

MANUFACTURER: Bombardier, Inc. Airplanes
SUBJECT: Airworthiness Directive 2011-23-09
ACTION: Final rule

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product.

The MCAI describes the unsafe condition as:

There have been two reported cases of failure of the MLG [main landing gear] piston axle, P/N [part number] 49203-3 or 49203-5, resulting from fretting between the inboard axle sleeve and axle thrust face, damage to the protective coating and consequent stress corrosion. In both cases, the MLG did not collapse.

The unsafe condition is failure of the MLG, which could adversely affect the airplane's safe landing.

DATES: This AD becomes effective December 9, 2011

FMI: AD

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