M609,
IIRC the Stockholm crash was due to a configuration control mistake in the FCS software. The a/c configuration wasn't catered for in the standard of software loaded and so where the pilot expected to have control, he lost it. Not PIO then. But if anyone has better info .....
As for the Viggen - awesome aircraft to watch, esp the short landing, J turn and take off. Oh, and taxiing at speeds that I think would be considered mad here. A pilot told me that the police had clocked them taxiing at over 100km/hr around their dispersed motorway sites.
sw