We don't have any ATR 42 left on the books as of July 2011;

Active Aircraft:

Bombardier CRJ-700 (25)
Bombardier CRJ-700NG (22)
Embraer RJ-135 (21)
Embraer RJ-140 (59)
Embraer RJ-145 (118)
Super ATR 72 (24)
Super ATR 72-212A (12)

Inactive Aircraft:

Embraer RJ-135 (18)
Super ATR 72 (3)
Saab 340B (41)

The math doesn't add up unless they want to keep 8 ATR, 6 have already been returned, the 3 that were in storage, 2 72-212A from DFW and 1 out of MIA. If we return 31 that would leave only 8, and if I am not mistaken that's the size of SJU. Miami ERJ is shrinking so it will be interesting to see what they plan on doing with the MIA feed.