Department of Transportation August 14, 2009 – Federal Register Recent Federal Regulation Documents

We propose to revise Airworthiness Directive (AD) 2009-10-09, which applies to certain Cessna Aircraft Company (Cessna) 150 and 152 series airplanes. AD 2009-10-09 requires either installing a placard prohibiting spins and other acrobatic maneuvers in the airplane or replacing the rudder stop, the rudder stop bumper, and the attachment hardware with a new rudder stop modification kit and replacing the safety wire with jamnuts. Since we issued AD 2009-10-09, we became aware of a need to clarify certain model and serial number designations, remove the duplicate requirement of replacing the safety wire with jamnuts, and clarify the conditional acceptability of using Modification Kit part number (P/N) SK152-25 as a terminating action to this proposed AD. Consequently, this proposed AD would retain the actions currently required in AD 2009-10-09, correct model designation for certain serial numbers, remove the duplicate requirement of replacing safety wire with jamnuts, and clarify the conditional acceptability of using Modification Kit P/N SK152-25 as a terminating action to this proposed AD. We are proposing this AD to prevent the rudder from traveling past the normal travel limit. Operation in this non-certificated control position is unacceptable and could cause undesirable consequences, such as contact between the rudder and the elevator.

This document amends NHTSA's delegations of authority. The amendment effectuates an adjustment that will enable NHTSA to achieve its mission more effectively and efficiently.