[Stig Jarlevik]

A pretty good reason Ghost is that you are quoting second hand sources while our friends Gerhard and Leo are quoting or know first hand sources.

You even quote a third hand source here, the aviation safety net, which can't even quote a second hand source correct, namely Ulf Balke.

Also Ulf Balke has always struck me as a very serious researcher, so quoting him directly is also pretty safe to do.

When using second or third hand sources the risk for faults increase and without knowing from where your quoted sources has taken their details I am inclined to believe far more in Chris, Gerhard and Leo.

Cheers
Stig