Document ID: chunk:federal_register_of_legislation:F2007L02420:body:0:p3
Version: federal_register_of_legislation:F2007L02420
Segment Type: other
Provision Reference: 
Character Range: 5882–7341

when they should have addressed the life limit of the entire airframe (life limit of the aircraft). Although the aerobatic frequency extended the operational times, it more importantly ensured that all aircraft (even those that have not reached the operational limits) are not subject to fatigue cracking caused by exceeding the aerobatic frequency.  This Directive required operational restrictions and incorporated the aerobatic frequency; and life limited the aircraft rather than just the wings.

             Amendment 2 is issued in response to a new EASA AD, which was prompted by further investigation that has determined the need to prohibit operations under the Aerobatic category for Zlin Z 42 series aircraft with non-reinforced wings, and the need to replace some airframe/wing attachment parts to maintain airworthiness of these aircraft in the long term.

             This Directive prohibits Aerobatic category flights for Zlin Z 42 series aircraft with non-reinforced wings, restricts certain aircraft to Normal category operations, limits to 190 flight hours the time that can be flown under Aerobatic and Utility categories, and introduces new life limits and new inspection requirements to be inserted into the operator's maintenance programmes.

   The original issue of this Airworthiness Directive became effective on 15 September 1999.

David Villiers
Delegate of the Civil Aviation Safety Authority

1 August 2007