Help Please Graupner Grob a 103 Twin acro III 3,4 m
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Help Please Graupner Grob a 103 Twin acro III 3,4 m
Help please
I get one old Graupner Grob Twin acro, and i need the manual building instructions, or data about CG and surface movements.
Thank you for help
I get one old Graupner Grob Twin acro, and i need the manual building instructions, or data about CG and surface movements.
Thank you for help