American Football Rules IFAF Approved Ruling 7-3-7:I

I. A player touches a legal forward pass (a) while he is contacting a boundary line; (b) while airborne after having leaped from out of bounds. RULING: (a) and (b). The ball is out of bounds, the pass is incomplete, and the down counts. The player loses his eligibility when he goes out of bounds (Rules 2-27-15, 4-2-3-a and 7-3-3). [Cited by 7-3-7-a]