Summary
On 25 January 1966, a Piper J3C "Cub" aircraft registered as HB-OAE was involved in an accident near Crozet (Ain, France). The aircraft was conducting a special VFR flight in the Jura sector of Geneva airport. The pilot was undergoing a practical examination for a restricted radiotelephony license at the time of the incident.
Circumstances
During the flight, the engine suddenly stopped at low altitude over a wooded area. The aircraft struck a fir tree, clipping its top, and then nosed into the vegetation. It came to rest in a vertical position, with the tail pointing upward.
Damage and Occupants
The aircraft was destroyed to an extent of 65%. Despite the impact, both occupants exited the aircraft unharmed.
Probable Cause
The engine stoppage was probably due to carburetor icing, as determined by the investigation.
Investigation
The Swiss Federal Commission of Inquiry into Aircraft Accidents conducted the investigation under summary procedure, based on an initial report from the French General Inspectorate of Civil Aviation. The decision was circulated on 11 March 1966.