The Changhe Z-18 is a medium transport helicopter developed by Changhe Aircraft Industries Corporation (CAIC) to replace the Changhe Z-8.
- Z-18: Based on the Avicopter AC313 design, it features a modified lowered fuselage and an improved WZ-6C turboshaft. A nose-mounted weather radar as well as FLIR and TV turrets were installed. Additional communication and navigation antennae are also added.
- Z-18A: Army version with a terrain following radar and EO turret.
- Z-18F: Anti submarine version with surface radar, dipping sonar, hardpoints intended for torpedoes/missiles, and sonobuoys.
- Z-18J: AEW variant with a multimode active electronically scanned array radar from the 38th Institute.