Airworthiness Directives; Cessna Aircraft Company 150 and A150 Series and Models 152 and A152 Airplanes

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This document proposes to adopt a new airworthiness directive (AD) that would apply to Cessna Aircraft Company (Cessna)150 and A150 series and Models 152 and A152 airplanes that have a Bush Conversions, Inc., Short Takeoff and Landing (STOL) kit installed in accordance with Supplemental Type Certificate (STC) SA1371SW. The proposed action would require measuring the wing stall fence for maximum height, and installing a smaller fence if the fence exceeds the maximum height of 1.28 inches. An accident of a Cessna Model 152 airplane where the STOL kit adversely affected the airplane's stall characteristics prompted the proposed action. The actions specified by the proposed AD are intended to prevent the airplane from entering a stall condition because of improper wing stall fence height, which could result in loss of control of the airplane.