Summary
We propose to adopt a new airworthiness directive (AD) for Vulcanair S.p.A. (type certificate previously held by Partenavia) Models P 68, P 68B, P 68C, P 68C-TC, P 68 ``OBSERVER,'' P68TC ``OBSERVER,'' and P68 ``OBSERVER 2'' airplanes that would supersede AD 2008-24-11, Amendment 39-15751. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracking and/or corrosion of the wing spar, which could result in structural failure of the wing. We are issuing this proposed AD to require actions to address the unsafe condition on these products.