What happened
On June 22, 2001, a Socata TB 10, registration HB-EYZ, was conducting a VFR flight from Neuchâtel, Switzerland, toward Albenga, Italy. The aircraft was carrying four Swiss nationals, including the pilot. During the flight, the aircraft was operating at an altitude of 2,500 feet. The final radio contact with the Milan Flight Information Centre (FIC) confirmed the aircraft was flying below the clouds.
While traversing the mountainous terrain near the Comune di Osiglia, the aircraft struck tall vegetation in a gorge beneath Monte dei Sette Pani. The impact caused the aircraft to lose control and strike the ground, resulting in a post-crash fire. The wreckage was located three days later by a local woodsman. All four occupants perished in the accident.
The investigation
Investigators examined the flight plan, radio communications, and the wreckage at the crash site. The wreckage was found in a narrow ravine at an altitude of approximately 3,440 feet. Evidence from the debris showed that the horizontal and vertical stabilizers had sustained significant impact damage from tree branches. The engine compartment was heavily damaged, and one propeller blade had separated from the hub.
Meteorological data indicated that while visibility was sufficient near Osiglia, it was deteriorating toward the south due to low pressure and fog. The investigation also reviewed the pilot's medical records and flight history, finding no evidence of sudden incapacitation or mechanical failure of the aircraft's control systems.