Aerospace Industry (Score 3, Funny)

Let take a look at some airliner sequences. Just when you think they're being consistent, they zing you.

Airbus:
A300
A310 up 10
A320 up 10
A330 up 10
A340 up 10
A319 down 21
A321 up 2
A380 up 59

Boeing
707
727 up 20
737 up 10
747 up 10
757 up 10
767 up 10
777 up 10
717 down 60
7E7 D0?
I guess they've been using HEX all along. Who the $#%^ versions in HEX?