HX Models Boeing Company 747-400 N747ER 1:400 Diecast Model1: 400 Diecast: Boeing Company Boeing 747 400ER N747ER "House Colors" (HX Models B611601) N747ER was the first Boeing 747 400ER ever built the factory demonstrator registered directly to The Boeing Company and never delivered to a passenger airline. Boeing used this aircraft to develop and certify the extended range variant before Qantas received the first customer delivery. The 747 400ER extended the standard 400's range to 7,670 nautical miles while