Alex (and Bill)
There is clearly a few mistakes in Air Britain's J-File.
Both F4334 and F4336 cannot have become G-CYBC
The details regarding D7869 are also highly suspect, at least if the latest research made by Griffin and Stachiw is to be believed. If D7869 ever went to Canada it is not recognised as going into any RCAF use.
Bill, I must presume you have their book Early Canadian Military Aircraft Vol 1 from 2009? Perhaps you just forgot to look in it?
According to this book RCAF received two aircraft, both part of the Imperial Gift!
G-CYBC ex F4336 TOS 6.8.1920 SOC 7.2.1922 (a former presentation aircraft 'Huddersfield-Canada' and used by 1 Sq CAF and its commander Lt A.E. McKeever in England as his personal aircraft, where it was already received in mid January 1919. Crated and shipped to Canada sometime in 1920)
G-CYDP ex F4518 TOS 19.4.1921 SOC 29.8.1923 (previously used by the British Air Attaché in Washington, USA and sent by rail to Canada and arrived on 24.2.1921)
As we can see the faulty serial F3518 (either a misprint in the records or in Griffin's first book) has now been corrected.
BTW the book is a veritable goldmine of details and I have to admit one of the best books written on a RCAF subject. So Alex, I can very much recommend it. Buy it!!
Cheers
Stig