Helicopter Bell UH-1N Serial 31708 Register N497NB 159700 used by Brown Helicopter Inc BHI ,US Marine Corps USMC. Aircraft history and location Aircraft History 159700 US Marine Corps 2007-03-29USMC c/n not confirmed 29mar07 at Malipo, South Korea with 31st MEU as EP-31 N497NB Brown Helicopter Inc 2013-08Brown Helicopter Inc at Pensacola, FL from Aug13 Send Updates Use APP to upload photo @ (optional) When Now? / / Send