Thanks Nitram and Moggy
Unless I find the details for the location of the “LY” Beacon for that particular night in a document at the PRO or a 1940 Observer (a real one!) with a fantastic memory, then I don’t think I have much chance. I am informed that they were regularly changed.
Once overhead the beacon flashing letters “L” & “Y”, you would track away from the beacon East 090 degrees from Magnetic North for 5 miles.
Regarding, the route according to the Ops Order which was an amended one they were to fly out over “ANVIL POINT” and down to “ILE de RE”, then track to Ambes the target, (near Bordeaux).
On return they were detailed to go to Harwell and basically no return route appears to be given on the Ops Order.
A teleprinted document at the PRO in the 77 Sqn Appendix records, sent at 16.10hrs on the day says “Aircraft must be routed Out and Home so as to cross English coast East repeat East of Selsea Bill” For the outward journey this does conflict with the Ops Order. However for the homeward journey it does agree with the statement made by the MOD from the Accident File, that “the land fall which the crew should have been making for was between Selsey Bill and Beachy Head.”
Thanks for your replies
Observer