On Sunday, March 25, 2018 at 1:03:43 PM UTC-4, Dan Daly wrote:
On Sunday, March 25, 2018 at 11:14:57 AM UTC-4, AS wrote:
If memory serves me right, there was a fatal accident with a SZD55 maybe a year or two ago which sounded very similar to what the British accident report summary states:
'During a towed launch, the glider was seen to climb rapidly. After disconnecting from the tow rope with a very high pitch angle, the glider rolled to the right and descended before hitting the ground in a nose-down attitude. The pilot was fatally injured.'
I cannot find the NTSB accident report for the accident in the US but it may be worth looking into it.

Uli
'AS'

Uli:

NTSB Identification: CEN16FA308
14 CFR Part 91: General Aviation
Accident occurred Saturday, August 06, 2016 in Channahon, IL
Aircraft: PZL-BIELSKO SZD 55-1, registration: N551DR
Injuries: 1 Fatal.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
[A BUNCH DELETED FOR BREVITY] QUOTE ...The empennage remained intact and exhibited no damage. The wing and horizontal stabilizer attach points were attached properly and were secure. The flight controls, including the spoilers, were checked for continuity from the flight controls to their respective surfaces. Flight control cables and control tubes were traced and all breaks were consistent with overload. No preimpact flight control continuity anomalies were detected... UNQUOTE

On initial roll, glider went over bump, glider jumped, changed position of the unsecured back seat adjustment, and pilot was holding to the stick, going 10 inches back.
Same like young girl by PennState 3rd deadly flight in Std Cirrus few years back.