We seem to be going around in circles here. Greybeard33's point was that there were no scheduled two-car workings to/from Manchester Airport. I subsequently stated that I was unsure about the 1435 Llandudno departure (TfW), as, until recently, it very definitely was booked for a 2-car (158, but could be a 150 in reality). 156420 said there is now a scheduled 195 duty on CLC stoppers on a Saturday, this duty incorporates the 2249 Airport - Liverpool semi-fast. He did not say if it was booked a 195/0 or 195/1, but on 28/12 it appears to have been a 195/0.
Clearly a two-car unit can substitute for anything else. As to what is scheduled to operate the Airport - Liverpool service, as JonathanH has said, above, the diagram which begins 0551 Airport - Liverpool is booked 2x195/0 (Monday to Friday only). The diagram starts later on a Sunday, but is still booked 2x195/0, on a Saturday it is booked a 195/1. This is my most recent information, which, I admit, is not all that recent. On Suns - Thurs the 2x195/0 splits into two single units prior to the last trip to the Airport, so there you have 195/0s going to the Airport, but arriving only, not departing. Another 195/0 arrival is 0337 Liverpool - Airport (Mon - Fri only). All other Airport semi-fasts are booked 195/1, except for three return journeys Mon - Fri which are booked 2x195/1.
There would rarely be a day when all journeys to/from the Airport featured their booked traction.