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Zenair Releases Full GVT Report for its Zodiac DesignZenair Europe has now made public the entire Ground Vibration Test (GVT) report recently concluded for the Zenair CH 601 XL design. The complete battery of tests was conducted in response to speculation that flutter could have contributed to a number of accidents involving the CH 601 XL. Testing was overseen by Dr. Uwe Weltin, an internationally recognized flutter and vibrations specialist and head of the Institut für Zuverlaessigkeitstechnik at the Technical University of Hamburg-Harburg (TUHH). GVT results confirm that when the CH 601 XL is built and maintained to Zenair specifications, there is “no tendency to flutter or divergence found within the flight envelope of the CH 601 XL”. With the likelihood of flutter now virtually eliminated, Zenair will shortly issue a detailed inspection checklist for CH 601 XL owners, to assist with maintenance and the on-going airworthiness of the aircraft. This checklist will include control system checks as well as appropriate airspeed indicator (ASI) markings. Zodiac designer Chris Heintz continues to remind pilots not to exceed the aircraft’s design limitations (which can easily be done in high-performance ultralights); this includes always flying well below VA in gusty conditions. Based on the wide range of the testing parameters used, the detailed report fully clears the Zodiac design of flutter-related concerns. “By making the findings of the GVT public in their entirety, we hope to address and put to rest the groundless concerns regarding the CH 601 XL design and flutter,” said Nick Heintz on behalf of Zenair Europe. The full 27-page GVT report is now available on-line and can be viewed at the Zenair Europe website. For more information on the CH 601 XL aircraft, now one of the now most tested aircraft in its class, contact Zenair or their nearest regional representative at www.zenairulm.com Contact: Zenair Europe Contact: Zenair Representatives |
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PRESS RELEASE For immediate publication - June 12, 2009 |