FILE- In this Monday, June 2, 2014 file photo, German test pilot Markus Scherdel steers the solar-powered Solar Impulse 2 aircraft for its maiden flight at its base in Payerne, Switzerland. Clean-energy company Masdar said Thursday, Sept. 25, 2014 that the Solar Impulse 2 plane will attempt its historic journey in March from the Abu Dhabi, United Arab Emirates. Project founders Bertrand Piccard and Andre Borschberg hope to complete the journey over four or five months, including stopovers. (AP Photo/Denis Balibouse,Pool, File)