The FAA has issued a Special Airworthiness Information Bulletin to inform pilots of normal, utility, acrobatic, and commuter category (part 23) airplanes certificated before 2000 of the potential hazards associated with stall warning characteristics in icing conditions. Part 23 contains airworthiness standards for airplanes in the normal, utility, aerobatic, and commuter categories. It dictates the (avstop.com) 更多...