-DVB "Kamet" and VT
-DXT "Trishul" were delivered as Combi options. They were configured in a quick-change version to carry freight in the forward third of the main deck and passengers behind that if needed, but could (and did) also operate in all passenger versions as well.
The standard configuration of the 707s was 2-2 in First Class and 3-3 in Economy Class. The actual seating config varied by route and the different config options were F24/Y108, F16/Y126, F12/Y132 and Y162.
Source : Air India Cabin Crew Training Manual 1973, written by my mom
"The A340-300 may boast a long range, but the A340 is underpowered" -- Robert Milton, CEO - Air Canada