Regulacje i polityka gospodarcza · 26/12/2007

Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ Airplanes

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from service history of incidents and accidents involving transport category turbojet airplanes without leading edge high lift devices, that shows that even small amounts of frost, ice, snow, or slush on the wing leading edges or forward upper wing surfaces can cause an adverse change in the stall speeds, stall characteristics, and the protection provided by the stall protection system. This proposed AD requires revising the airplane flight manual to include a new cold weather operations limitation. We are proposing this AD to prevent possible loss of control on takeoff resulting from even small amounts of frost, ice, snow, or slush on the wing leading edges or forward upper wing surfaces. The proposed AD would require actions that are intended to address the unsafe condition.