Hi There,
There is some more info and two black and white photos of the aircraft G-AOKH at this webpage - (you have to scroll down about three-quarters of the way down):
http://wonwinglo.scale-models.net/id48.htm
My Dad also worked for Alidair as Operations Controller at East Midlands. I used to love going to EMA and seeing Viscounts, Vanguards and Argosy's.
Do you have any details of which Viscount it was that had the undercarriage accident in Guernsey?
The only two Alidair Viscount incidents I know of are the 1980 fuel starvation / belly landing in Exeter by G-ARBY (which was the oldest flying Viscount in the world at that time), and the hard landing / undercarriage collapse by G-BFYZ (in Guernsey Airlines colours) at Kirkwall, Orkneys in 1979.
Regards,
David