Hi Patkinson,
I can't help you with the flypast I'm afraid as I was still at Nav' School when the 48 Hastings were retired and arrived on the squadron as a young Hercules nav' in late '67.
The Hastings squadron was disbanded on 1/4/67 and reformed with the Hercules on 2/10/67 ( dates extracted from Jefford's RAF Squadrons ).