Found a problem with the 7 day search, but it could be an error in the underlying engine. When the aircraft type changes for a route, all results for that flight seem to list the aircraft type that was first found.
For instance, on August 1, FRA-IAH LH440 changes from a 744 to a 380. Doing a +/-3 days search on 8/3 shows 744 for all instances of LH440. Doing the same search on 8/4 shows A380 on all instances of LH440.
[KVS Availability Tool 6.9.9904/Diamond - SNT: Awards/StarAlliance-7D]
Code:
FRA Frankfurt Metro / Intl DE = FRA HHN [EDDF]
IAH Houston George Bush Intercnt'l TX US [KIAH]
TUE 31 Jul 2012 - 06 Aug 2012 | 2 Seats
Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- -------- ---- -------- --- -- -------------
LH 440 FRA 10:10 -3 HOU 13:50 -3 744 0 FS- CS- YS-
LH 440 FRA 10:10 -2 HOU 13:50 -2 744 0 FS- CS- YS-
LH 440 FRA 10:10 -1 HOU 13:50 -1 744 0 FS- CS- YS-
LH 440 FRA 10:10 HOU 13:50 744 0 FS- CS- YS+
LH 440 FRA 10:10 +1 HOU 13:50 +1 744 0 FS- CS- YS-
LH 440 FRA 10:10 +2 HOU 13:50 +2 744 0 FS- CS- YS-
LH 440 FRA 10:10 +3 HOU 13:50 +3 744 0 FS- CS- YS-
[KVS Availability Tool 6.9.9904/Diamond - SNT: Awards/StarAlliance-7D]
Code:
FRA Frankfurt Metro / Intl DE = FRA HHN [EDDF]
IAH Houston George Bush Intercnt'l TX US [KIAH]
WED 01 Aug 2012 - 07 Aug 2012 | 2 Seats
Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- -------- ---- -------- --- -- -------------
LH 440 FRA 10:10 -3 HOU 13:50 -3 388 0 FS- CS- YS-
LH 440 FRA 10:10 -2 HOU 13:50 -2 388 0 FS- CS- YS-
LH 440 FRA 10:10 -1 HOU 13:50 -1 388 0 FS- CS- YS+
LH 440 FRA 10:10 HOU 13:50 388 0 FS- CS- YS-
LH 440 FRA 10:10 +1 HOU 13:50 +1 388 0 FS- CS- YS-
LH 440 FRA 10:10 +2 HOU 13:50 +2 388 0 FS- CS- YS-
LH 440 FRA 10:10 +3 HOU 13:50 +3 388 0 FS- CS+ YS-