IB4138 - Your memory is good, the aircraft apparently was N887PA on 25th/26th May 1977, and operated Heathrow-Speke-Rome/Rome-Speke-Cologne but no Aer Lingus conection and it still does not help me with N408PA (with thanks to Phil Butler for the info on N887PA). Thanks to all for your help and I am sorry to have interrupted the thread. I will say in my defence that my father flew DC 3s for Aer Lingus and I have a long interest in the airline and its fortunes!