A shuttle landing on the line is good. A shuttle hitting the net is good and play continues (including on the serve) if all other aspects of the play is legal. All players must be INSIDE the lines in their respective service courts at the point of contact during the serve. A “let” is a situation requiring a replay.
Faults Include: (a) The shuttle fails to pass over the net or lands outside the boundary line. (b) The shuttle contacts the walls, ceiling, player or player's clothes. (c) The shuttle passes through or under the net. (d) The player touches the net.
Like the term, the boundary of the single's court is the inner line at the side, and the outer line at the end. If the shuttlecock hits outside the boundary, it is considered out, and the point is given to the receiver.
If the cork part of the shuttlecock hits the line irrespective of the rest of the shuttle, it is going to be in. It is only out if the shuttle does not hit any part of the outer court line.
In singles the court is thinner, with the wide, outside 'tramlines' out of bounds. In doubles the court is full width and these tramlines are now 'in'. During service in doubles, the court is short, with the rear 'tramlines'at the back of the court, being out of bounds until the serve is returned.
If the shuttle hits or goes over the top of the basketball backboard (when they are in their put away position), it will be considered out of bounds. Shuttles that land on the boundary lines are considered in. Faults: If the service is not correct.
During service in doubles, the court is short, with the rear 'tramlines'at the back of the court, being out of bounds until the serve is returned. Once the service is returned the whole of the court becomes in. If the shuttle lands on the line then it is in.
Each side of a badminton court has a right and a left service court for singles. Each singles service court is bounded by the short service line, the centerline, the singles sideline and the back boundary line. Its dimensions are 15.5 feet (5.03 m) long by 8.5 feet (2.59 m) wide.
Net. The net is 760mm in depth and a minimum of 6.1m wide. The top of the net from the surface of the court is 1.524m at the centre of the court and 1.55m over the side lines for doubles. There must be no gaps between the ends of the net and the posts.
This means if the ball touches the line, it is still in play. The ball must wholly cross the boundary line to be considered out of play.