Part of the dynein complex of multiciliated cell cilia. Consists of at least two heavy chains and a number of intermediate and light chains (By similarity). Interacts with DNAAF2 (By similarity). Interacts with DNAAF6/PIH1D3. Interacts with HEATR2; probably involved in outer arm dynein assembly (By similarity). Interacts with C16ORF71/DAAP1 (PubMed:33263282). Located in the proximal region of respiratory cilia. Belongs to the dynein intermediate chain family.