Abstract: Aircraft handlers include a plurality of undercarriage support assemblies. Each undercarriage support assembly includes a body, a translation assembly operably attached to the body, and a support member operably coupled to and extending from the body. The support member comprises a support region configured to engage and operably support at least a portion of an undercarriage of an aircraft. The translation assembly is configured to support the undercarriage support assembly on a ground surface and permit the undercarriage support assembly to translate along the ground surface. The aircraft handlers further include one or more drive assemblies configured to move the aircraft handler along the ground surface, in which each drive assembly comprises the translation assembly of an undercarriage support assembly. Methods comprise supporting the undercarriage of the aircraft with the aircraft handler and moving the aircraft along the ground surface with the aircraft handler.