Yes, you can do this. It does have a landing spot, the aircraft carrier you have committed to place in that sea zone during the mobilize new units phase.
The rules seem to be inconsistent. I believe it says both:
(i) that an aircraft can land on a carrier that is about to be placed (mobilized) later on in the turn in the Mobilize new units phase. i.e. that, technically, aircarft actually land in the Mobilize new units phase, and as such, an aircraft carrier about to be placed serves as a legitimate landing spot.
(ii) the rules also say that if an aircraft doesn't have a landing spot by the end of the Non-combat movement phase, the aircraft is lost.
Although the wording seems to me inconsistent, my sense is that the rule is, that a to-be-mobilized aircraft carrier is a legitimate landing spot for an aircraft.
Can anyone verify this? Thanks.