That computer was an Olivetti M24.
The first IBM clone!
http://www.old-computers.com/museum/computer.asp?c=535
It's sitting in the room next to me as I type, one of these days I should fire her up, the big proviso would be the condition of the 5.25 floppies.

The 20MB hard drive (yes MB is correct!!) should be ok.

FS1 was all wireframe.  :o
FS2 on C64 was the bees knees, bought to you in full living colour, still a wireframe but lots of green grass and blue skies. lol.

IIRC the aircraft was loosely modelled on a Piper Lance??

You really needed a good imagination. The kids of today will never know...
At least it didn't have Facebook.  >:(