NG Models Korean Air Boeing 747SP HL7456 1:400 Diecast Model1: 400 Diecast: Korean Air Lines Boeing 747SP HL7456 (NG Models NG07043) HL7456 is a Boeing 747SP B5, construction number 22483, line number 501. It first flew on 23 December 1980 at Paine Field and was accepted by Korean Air Lines on 22 January 1981. Korean Air deployed its 747SPs primarily on ultra long haul routes such as SeoulNew York JFK, where the SP variant's extended range over standard 747 200 airframes offered a direct routing advantage.