Legal forward pass?

[KingTut]

The QB passes LOS then gets back behind the LOS and throws a forward pass
legal ?

[HLinNC]

Yes

[backjudge79]

Correct as long as there are no ineligible receivers down field.

[Curious]

HL in NC is right; but isn't it interesting that the passer can retreat behind the LOS and still be able to throw a legal forward pass but it's an ineligible downfield foul if a lineman goes beyond the ENZ (without blocking anyone) then retreats....

[HLinNC]

as long as there are no ineligible receivers down field

What does that have to do with a legal forward pass?

Don't add things to the equation.  Simple question, simple answer.

[jjseikel]

Correct as long as there are no ineligible receivers down field.

Not applicable. It is still a legal forward pass.

[bigjohn]

There are other requirements for it to be a legal pass though. 

ART. 2 . . . An illegal forward pass is a foul. Illegal forward passes include:
a. A pass after team possession has changed during the down.
b. A pass from beyond the neutral zone.
c. A second or subsequent forward pass thrown during a down.
d. A pass intentionally thrown into an area not occupied by an eligible offensive
receiver.
e. A pass intentionally thrown incomplete to save loss of yardage or to conserve
time.
EXCEPTION: It is legal to conserve time by intentionally throwing the ball forward to
the ground immediately after receiving a direct hand-to-hand snap.