Federal Aviation Administration officials will be on hand at three public forums March 1 at the Chamblee Civic Center, 3540 Broad St., to discuss a proposal that would allow commercial passenger jets to fly over Peachtree DeKalb Airport at 5,000 feet, rather than the present required level of 8,000 feet. The three forums, at which FAA officials will receive public comments, will be held at 3, 5 and 7 p.m.