Northwest WorldPerks (Discontinued Program) - NWA sub-fleet numbers

I did a search and didn't find any similar reference.

Sub-Fleet numbers for NWA

11XX = DC10-40
12XX = DC10-30

22XX = 727s
27XX = 727s

31XX = A319
32XX = A320

55XX = 757-200 (delivered in '80s)
56XX = 757-200 (recent deliveries)
58XX = 757-300

63XX = 747-400s
66XX = 747-200s
67XX = 747-200Fs

91XX = DC9-10s
93XX = MD-80s
96XX = DC9-30s
97XX = DC9-40s
98XX = DC9-50s
99XX = DC9-30s

(note-I welcome more information from the group as this is by no means exhaustive)

I think that the following NWA a/c may have already been sold/junked and no longer are registered aircraft belonging to Northwest.

RC

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11XX = DC10-40

22XX = 727s
27XX = 727s

93XX = MD-80s