To facilitate assembly of an aircraft cockpit, a cockpit module includes an instrument panel to support at least one screen and an air conditioning distribution block bordering the instrument panel and integral with a rear face of it. The air conditioning distribution block includes an air distributor, an excess air collector, and air distribution channels each including a first end communicating with the air distributor and a second end communicating with the excess air collector, each distribution channel being equipped with an air outlet arranged between its first and second ends.