Trying very hard to get to Santiago next weekend in F, on an AONE5. Its been a complete bugger trying to get availability on LA for my SA flights, and I've currently got horrible dates booked.

The flights I want are all showing availability in F, but not A. Anyone have any idea if/when LA opens these F buckets up to A tickets? I'd have thought they would have freed them up by now. Maybe they don't open them up at all and would rather the plane left empty. Any experience/knowledge on this board?