I-DIKQ Douglas DC-9-32 of Alitalia
The DC-9 was becoming more common as carriers replaced their remaining Piston Engine and earlier Jet Equipment.
Alitalia Web Site
Alitalia - Wikipedia Entry
DC-9 Family - Boeing Web Site (heirs and Successors to Douglas and McDonnell Douglas Companies)
DC-9/C-9 Transport History - Boeing Web Site
McDonnell Douglas DC-9 (Formerly Douglas DC-9) - The Wikipedia Entry