Spekesoftly - good point but I suspect that they were dropped off at Renfrew airport which was a virtual stones throw away and we have a picture of it taken on the apron at Renfrew on that day (28th April 1966). Renfrew closed for good when Abbotsinch opened. NOV is at East Fortune now and someone suggested contacting the museum to see if there were any logbooks with it.
Chevvron - The Pembroke which landed in error on the 26th April was WV703
Many Thanks
KeMac