Good point.
Has anyone ever actually done a study on that?
What % of Part 121 flights have more than the normal crew compliment v's what % of Part 121 aircraft involved in a major incident have more than a normal compliment.
I would guess about 10% of flights I do have someone extra on the Flight deck yet it seems that about 30% - 50% of accidents I hear about have someone extra on.
Anyone know the stats?