40. The skin on an aircraft is normally manufactured from (A) 5117 aluminum alloy. (B)2024 aluminum alloy. (C)7015 aluminum alloy. (D)2117 aluminum alloy.

48. One aircraft that certificated as transport category by CAA or by civil aviation authority of the State of Design and prohibited for acrobatic operation is categorized as: (A)Commuter Category Aircraft (B)Transport Category Aircraft (C)Normal Category Aircraft (D)Utility Category Aircraft