Yes copied Northern Pacific traces its roots to June 20, 1948, and the founding of Economy Helicopters. The company was founded by Carl Brady; he flew the first commercial helicopter to Alaska to work on a mapping contract for the U.S. government. In the years that followed, Economy Helicopters renamed itself Era Helicopters (now a part of Bristow Group).Dash 8 300 in Ravn Alaska hangar.In 1967, Houston based Rowan Companies, purchased the company from the founder.[3]Most of its business was supporting offshore oil drilling. Era's helicopters also supported the efforts to build the Alyeska Pipeline. During construction of the pipeline, the company started its fixed-wing division, based on DeHaviland Twin Otter and Convair 580 aircraft.[4]Ravn Alaska's ticket counter at Ted Stevens Anchorage International AirportAfter the construction of the pipeline, Era saw an opportunity to expand to scheduled passenger service, which they introduced in May 1983. The Convair planes were used for service to Valdez, Kenai, Kodiak, Cordova, and Homer. The Twin Otter fleet was based out of Bethel and operated service to many of the small communities surrounding it.In 1988, Era Helicopters formally changed its name to Era Aviation, and changed structure and creating a division, still known as Era Helicopters, now a part of Bristow Group, alongside Era Aviation.The company endured a very turbulent transition between December 2004 and December 2006, which saw two changes in ownership, the spinoff of the Era Helicopters division (on July 1, 2004), and the company entering (in very late 2005) and emerging from Chapter 11 Bankruptcy.[5]In early 2009, HoTH Inc., the holding company that owned Hageland Aviation Services and Frontier Flying Service, purchased Era Aviation.[5] However, Era Helicopters was not part of the acquisition (having left common ownership on July 1, 2004, when both were under SEACOR ownership).[6] In October 2009, HoTH Inc. also acquired Arctic Circle Air Service, a loca