ok here it is the one and only guess the contamination quiz for the oh so educated on this forum
fingers on the buzzers and fastest finger gets nothing.
would you dispatch with this on your wing??
DSC00039 on Flickr - Photo Sharing!
here it is from seat 12A
DSC00037 on Flickr - Photo Sharing!
i'll let you know what it is after a few have had a go.
big hint......its the same stuf as in matblack...( i know more about flying/met/airlaw/performance than any pilot because i went to university and also read pprune)'s photo earlier on!