The first flight with the new engine was May 9, 1925. The federal government 1925 Report of Civil Aviation described the Vedette as a remarkably efficient little working boat, the equal, and for Canadian conditions, the superior of any flying boat in the world. In the next few years the Vedette was used extensively by the R.C.A.F. for photographing large areas of Canada. The design was not without problems and after several crashes during the 1927 season the problem appeared to be in the hull. It was determined that the hull soaked up water very quickly and unless given the opportunity of periodically drying out the aircraft performance suffered. As a result the bottoms were reinforced with additional stringers, compression members and a duraluminum cross channel between the wing spars for all new production models and retrofitting of existing models.
C. S. Caldwell, a pilot who left the OPAS, to become a Vickers test pilot, made history May 17, 1929 when he bailed out of Vedette ZF in an uncontrollable spiral to become the first Canadian whose life was saved by a parachute descent.