In article ,
Berry wrote:

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!


Our gliders with the more common interdigitating spars are not
completely immune to similar improper attachment of the wings. I once
saw an LS-3 land at Cordele with the wings mis-attached and loose enough
to rattle. A main wing pin was not fully engaged through the rear spar
hole. The pilot reported a loud knocking noise on tow, released and very
gingerly returned to land safely. He was quite shaken and I never saw
him fly again.