I see the same behavior as zman with your test case:
[KVS Availability Tool 6.1.2/Diamond - Sabre: Availability/GTC/US-LTR]
Code:
NYC New York Metro NY US = JFK LGA
CHI Chicago Metro IL US = ORD MDW
MON 01 Aug 2011
Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- -------- ---- -------- --- -- --------------------------------------------------------
WN 660 LGA 13:55 MDW 15:30 73G 0 Y4 K4 L4 B4 Q4 H4 W4 R4 O4 M4 S4 N4 T4
CO 6817 EWR 14:00 ORD 15:24 320 0 F9 C9 D9 Z9 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S9 T9 L9 K9 G9
CO 219 EWR 14:00 ORD 15:33 735 0 F7 C7 D7 Z6 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S9 T9 L9 K0 G0 N9
DL 5947 LGA 14:00 ORD 15:35 E75 0 F9 P9 A9 Y9 B9 M9 H9 Q9 K9 L9 U9 T9
US 6004 EWR 14:00 ORD 15:24 320 0 F9 A9 Y9 B9 M9 H9 Q9 N9 V9 W9 L9 S9 T9 G9 K9 U9 E9 R9
UA 643 EWR 14:00 ORD 15:24 320 0 F9 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S9 T9 L9 K9 G9 A9
UA 3482 EWR 14:00 ORD 15:33 735 0 F7 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S9 T9 L9 K0 G0 A6
AA 333 LGA 14:15 ORD 16:00 S80 0 F7 A7 P7 Y7 B7 H7 K7 L7 M7 W7 V7 G7 S0 N0 Q0 O0
BA 6591 LGA 14:15 ORD 16:00 M80 0 F9 A9 J9 C9 D9 R9 I9 Y9 B9 H9 K9 M9 L9 V9 N0 S0 O0 Q0 G0
DL 3096 JFK 14:59 ORD 17:03 CR9 0 F9 P7 A7 Y9 B9 M9 H9 Q9 K9 L9 U2 T0
CO 6572 EWR 15:00 ORD 16:24 319 0 F8 C8 D7 Z7 Y9 B9 M9 E9 U9 H9 Q9 V0 W0 S0 T0 L0 K0 G0
CO 6859 LGA 15:00 ORD 16:38 319 0 F8 C8 D6 Z6 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S0 T0 L0 K0 G0
DL 5949 LGA 15:00 ORD 16:35 E75 0 F9 P9 A9 Y9 B9 M9 H9 Q9 K9 L9 U9 T9
WN 293 EWR 15:00 MDW 16:25 73G 0 Y4 K4 L4 B4 Q4 H4 W4 R4 O4 M4 S4 N4 T4
US 6825 LGA 15:00 ORD 16:38 319 0 F8 A6 Y9 B9 M9 H9 Q9 N9 V9 W0 L0 S0 T0 G0 K0 U0 E0 R0
UA 649 EWR 15:00 ORD 16:24 319 0 F8 Y9 B9 M9 E9 U9 H9 Q9 V0 W0 S0 T0 L0 K0 G0 A7
UA 657 LGA 15:00 ORD 16:38 319 0 F8 Y9 B9 M9 E9 U9 H9 Q9 V9 W9 S0 T0 L0 K0 G0 A6
BD 4349 LGA 15:00 ORD 16:34 319 0 J4 C4 D4 Y4 B4 M4 U9 H4 Q4 V4 W4 S0 T0 L9 K0
AA 335 LGA 15:20 ORD 17:10 S80 0 F7 A7 P7 Y7 B7 H7 K7 L7 M7 W7 V7 G7 S0 N0 Q0 O0
BA 6595 LGA 15:20 ORD 17:10 M80 0 F9 A9 J9 C9 D9 R9 I9 Y9 B9 H9 K9 M9 L9 V9 N0 S0 O0 Q0 G0