 Hegenberger had overseen the development of a number of navigation instruments that would make the trip feasible but like Maitland had also been transferred to Hawaii, where his repeated written requests for a transpacific flight were likewise refused.In 1926 Hegenberger returned to McCook, where he helped test a navigation system using signals from low-frequency radio beacons.The transpacific flight from California to Hawaii was then approved to demonstrate the difficult task of navigating to a small island using the beacons as a navigational aid.