Translations:KAVAN TARA A1 (F1H) - Instruction manual/51/en

From KAVAN RC Wiki

Once satisfied, bend the rudder 52 slightly (about 2 mm) to the left (looking from the tail to the nose). Now the model should glide in large left (counter clockwise) turns. Whilst under tow, the off-centre towhook would force your TARA right - resulting in straight flight.