Accident Convair CV-440-11 HB-IMF, Friday 10 February 1967

Date:	Friday 10 February 1967
Time:	08:00
Type:	Convair CV-440-11
Owner/operator:	Swissair
Registration:	HB-IMF
MSN:	355
Year of manufacture:	1956
Total airframe hrs:	24343 hours
Engine model:	Pratt & Whitney R-2800-CB17
Fatalities:	Fatalities: 4 / Occupants: 4
Other fatalities:	0
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	9,5 km W of Zürich-Kloten Airport (ZRH) - Switzerland
Phase:	En route
Nature:	Training
Departure airport:	Zürich-Kloten Airport (ZRH/LSZH)
Destination airport:	Zürich-Kloten Airport (ZRH/LSZH)
Investigating agency:	BFU Switz.
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
The CV-440 was climbing after a departure from runway 28 at Zürich-Kloten Airport, Switzerland when it collided with The Lägern, a wooded mountain of the Jura Mountains at an elevation of 791 m. The mountain was covered in clouds.

The commission unanimously comes to the following conclusion: The accident occurred because the airplane deviated from its course during a visual flight training round in the takeoff climb, entered instrument flight conditions and collided with the terrain. The reasons for this deviation could not be clearly clarified.

Accident investigation: