ERJ staff report (DS)
Washington DC - The US Federal Aviation Authority is telling operators of certain aircraft to remove some specific tyres made by Goodyear because of tyre tread separations and tread-area bulges on the main landing gear tyres.
The unsafe condition is specific to Brazilian produced new tyres, size H29x9.0-15, only. They are typically fitted to the Bombardier, Inc. Model CL-600-2B19 airplanes, but the Airworthiness Directive applies to all aircraft, irrespective of manufacturer or aircraft type.
This condition, if not detected and corrected, could cause the main landing gear tyres to fail during takeoff or landing. The failure may cause damage to the airplane structure, flaps, engine, and wheel well and result in reduced controllability of the airplane.
All such tyres should be removed by 13 September 2012. The ruling follows a similar directive in Brazil dated 5 June 2012.
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Airworthiness Directive from FAA