What kind of LLC is it? Is he a Single Member LLC? Did he elect to be an S Corp? If he is not a S Corp he probably files it on Schedule C in your personal tax return. So the business tax return would be the Schedule C. Has he been filing Schedule C each year?
A Single Member LLC that is not an S corp is a disregarded entity and is filed on Schedule C in your personal 1040 tax return. Or what kind of business return did he file years ago that was passed through your personal return? Did he get a Schedule K-1 for it or a W2?
