Summary
We propose to supersede Airworthiness Directive (AD) 2006-06- 06, which applies to certain Cessna Aircraft Company (Cessna) Models 208 and 208B airplanes. AD 2006-06-06 currently requires you to incorporate information into the applicable section of the Airplane Flight Manual (AFM) and Pilot's Operating Handbook (POH) and requires installation of placards. Since we issued AD 2006-06-06, Cessna issued further revisions to the AFM Supplement S1 ``Known Icing Equipment'' and developed a low airspeed awareness system. Consequently, this proposed AD would require you to incorporate the AFM Supplement revisions, to install the low airspeed awareness system, and to retain the requirements of AD 2006-06-06 until the above requirements are incorporated. We are proposing this AD to assure that the pilot has enough information and the necessary equipment to prevent loss of control of the airplane while in flight during icing conditions.