http://www.ww2talk.com/forum/war-air...ound-so-3.html
Not quite a large slow aircraft but:
30 November 1941
Western Desert Communications Flight
Blenheim IV Z7589
W/C. A. McDonald Bowman +
F/S. J. McLaren (Wop/Ag) +
G/C. C. Dearlove +
Capt F. Benn (Army passenger) +
Shot down by friendly AA fire and crashed near Gialo Oasis, Sudan.
The Bristol Blenheim - Warner