The Air Menu is only enabled when Air PNR processing has been turned on.
This Tourplan add-on has an import function which will download an airline PNR into Tourplan and Tourplan will format the data into a booking service line with the details being able to be output on documentation.
NOTE: Air bookings cannot be made from within Tourplan, they can only be imported into Tourplan. The air bookings must be made in a CRS.