Right side of bread make bigger thrust than left side. Airplane tend to move left side. This is for tail dragger airplane. When it is rolling. Airplane will be street, the force sill apply 90 degrees ahead.
Airplane tend to move left side.
Controllable pitch propeller. To sight instruction, to commercial operation must be taken 100 hours inspection every 100 hours. All aircraft must be taken this inspection every 12 calendar month. Private pilot may share flight expenses with his passenger. Private pilot who has 200 hours, or more may work at aircraft salesman or charitable organization.