Hi all for "statistic research" I would like to ask for the cause of listed accidents (I have already info from A-B Serials book).

I am interested in details of the accidents and cause when:

1) it happened on non-operational flight,
2) the supposed cause was a technical failure (engine cut etc.)

31.01.41 T2541
21.02.41 T2575
07.04.41 T2995
05.05.41 T2908
02.11.41 T2543
07.12.41 T2566
28.08.42 T2545
27.01.43 T2951

TIA

Pvel