Not on a free throw. An air ball on a free throw is a violation of some sort, and the play is dead.
Answering myself, because I think I'm wrong. According to any NBA rules I looked at (this looks like it covers the violations:
(http://www.nba.com/analysis/rules_10.html?nav=ArticleList)), I don't think the FT air ball itself is a violation. But any time I've seen this in an NBA game, there's an immediate whistle.
So, I think, in practice, there is always a whistle (and never a rebound) on an NBA FT air ball, because:
- the shooter is quickly in violation because they cross the plane of the free throw line before the free throw touches anything; and/or
- a FT air ball usually hits out of bounds?
This is all tangential to the original post, which I'm still convinced is the result of an LA issue.