In article ,
James Thomson wrote:

The UK Air Accidents Investigation Branch (http://www.aaib.gov.uk)
havepublished their report on the fatal crash last year of a SZD Foka 4.
Thereport is included in the May 2011 bulletin.

The report confirms that the cause was a mis-rig, specifically theincomplete
engagement of the expanding rigging bolt.

Same type of Foka accident a couple of years ago here in Alabama, U.S.

Be careful assembling those Fokas!