Thanks to Les Butler's website, 'GK5' can be seen exactly.
'GK' is just West of Amsterdam, with Amsterdam itself just below centre-right ( East ).
The number-system looks like this : -
1 2 3
4 5 6
7 8 9
The spot where JB-659 came down is almost midway between Amsterdam and the coast, and does certainly fall within the '5' square of 'GK'. Had the aircraft fallen into the sea as Hinchliffe records, then it would most likely have been reported as 'GK4'. So the crash-site of this aircraft corresponds with the reported 'kill' of Schnaufer.
It still seems highly unlikely that Vinke would have shot a Lancaster down at the same time and place....doesn't it ?
