AD/GROB 115/1 - Surface Finish
1AD/GROB 115/1 - Surface Finish
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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Grob G115 Series Aeroplanes
AD/GROB 115/1 Surface Finish 12/88
Applicability: All Grob model G 115 series aircraft.
Requirement: Inspect upper surfaces of wing and horizontal stabilizer to ensure that the surface finish is white.
Note: Coloured markings such as striping near the tips of each surface are permitted. However, coloured markings over large areas or inboard of the semi-span of the wing/stabilizer are prohibited.
Compliance: Before issue of a Certificate of Airworthiness and thereafter at each scheduled inspection for issue of a new Maintenance Release.
Background: The manufacturer has shown structural substantiation for maximum temperature conditions which could be exceeded, under Australian ambient temperatures, if the solar absorptivity of the surface is greater than that for white paint.