"FAA said it has proposed a $275,000 civil penalty against New York-based Atlas Airlines for allegedly operating a Boeing 747 after performing improper maintenance on the aircraft. In a statement, FAA said it “alleges that Atlas maintenance workers improperly repaired the plane’s landing gear after it would not retract on departure from Sydney, Australia. Atlas repaired the gear using the wrong part, and maintenance workers had to install the component upside down to get it to fit.” FAA alleges Atlas operated the aircraft on 24 cargo flights over a 10-day period after improperly repairing the landing gear. “The aircraft was not in an airworthy condition during those flights,” the agency said in a statement.