Seat assignments, schedules, reservation confirmations and everything else you take for granted when flying on airlines from the civilised world are not really applicable to Precision Air. Show up early (to avoid being denied boarding), be prepared to argue (when oversold the favourite trick is to pretend your reservation doesn't exist) and rush to the aircraft to grab your preferred seat (first occupant of the seat gets to keep it, regardless of what the boarding pass says). If you're lucky, your flight may actually not be cancelled.