Translations:KAVAN TARA A1 (F1H) - Instruction manual/12/en

From KAVAN RC Wiki

Pin down the pre-shaped balsa leading edge 2. Glue the balsa ribs 1 in place. Fit, cut to size and glue the bottom 1.5 mm balsa sheeting 4 between the leading and trailing edge. Glue two ribs 6 insets about 2 mm along the outer edge of the central sheeting and another one in the centre of the sheeting. Glue the balsa end rib 5 in place – the bevelled side outwards (in similar manner to Det. F–F).