AIB Bulletin 8/76
13 July 1976 Alidair Viscount 708 G-ARBY 2 crew no injuries, non-scheduled cargo flight.
The aircraft, having received ATC taxy clearance, taxied into a GPU and tractor that was in the process of moving clear of the aircraft from its position under the nose. The GPU etc were hit by the stbd props and the wing leading edge was damaged by debris.
Probably meets the Annex 13 definition of an 'accident' rather than an incident as the aircraft sounds like it sustained 'substantial' damage.
Why the interest in this accident?