there's no way the producers/writers would make that much of a goof, knowing how much we analyze everything...see this timeline on Lostpedia...

Timeline:November 2004 - Lostpedia

read through to find the relevant parts about the Pearl and the drug plane. It confirms the plane falls first (day 41) then Paulo overhears Ben and Juliet (day 49) then Eko and Locke uncover the Pearl hatch (day 65) So the Others must have pushed the plane over the Pearl hatch.