Helicopter translating tendency is not a big deal, but it is just something you have to know and be able to describe to the examiner during the helicopter check ride. Pilots correct for it without even giving it much thought. Some helicopters are rigged with the main rotor mast slightly leaned to offset translating tendency.
Simply stated, the helicopter will drift in the direction of the tail rotor thrust during a hover is the pilot or rigging does not correct for it.
Translating Tendency in a helicopter is not a big deal, but it is one of those things you will have to explain to the examiner during your check ride.
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