Hello Arjay
I have the AMO (rules as it were) governing the accident paperwork, but to ensure you get the right part do you know if this aircraft was based with an Overseas Unit / Group or Command?
In the meantime you may like to see this attachment researched by Brian Johnson around 1982, Brian was a BBC Television Producer and he gained access to A & AEE Reports with a T. Heffernan who worked at Boscombe Down during the war years.
All the general Reports and Handling Trials ought to be in the AVIA series in The National Archives, Kew, by now. The general Reports into the "disappearing Halifaxes" over the sea on Ops & the Rudder problems should be A & AEE Report No.760; No.760a. These Reports have numerous (55) parts. See also Report 760c according to Brian Johnson's research and others.
You might also look at AIR 29/897 A&AEE ORB 1939-1944 in Appendix A which is recorded and published to have an Accident Report on a Halifax II, Accident Report No.W7917.
If you go to TNA, Kew, take some photographic ID such as Passport / Photo Driving Licence and at least two RECENT printed forms with both proof of your name and current address together on them (such as Council Tax Bill & Inland Revenue letter (although they probably ask for them within last 3 months), to get a Readers Ticket issued. Ring TNA before going.
Also Try
AVIA 13/560
http://www.nationalarchives.gov.uk/c...accessmethod=0
and
AVIA 18/708 Halifax aircraft: performance and handling trials A.& A.E.E/760 13 pts 760a-e 55 pts 1940 to 1946
http://www.nationalarchives.gov.uk/c...accessmethod=0
and check
AVIA 46/112
http://www.nationalarchives.gov.uk/c...accessmethod=0
[although some of this info is pretty general, but you never know]
Brian Johnson wrote a book with the help of Heffernan which covers this Halifax type of aircraft with Rudder problems called "A Most Secret Place"
covering some of the work at "Boscombe Down 1939-45" you ought to be able to get this via Abe Books or a search of the other secondhand book search online companies.
Mark