; (2) are trained regarding the availability of accessible lavatories and on-board wheelchairs and the right of a qualified individual with a disability to request an on-board wheelchair; and (3) complete refresher training within 18 months of an initial training and be recertified on the job every 18 months thereafter by a relevant superior in order to remain qualified for providing aisle chair assistance. (c) Considerations In conducting the rulemaking under subsection (a), the Secretary shall consider, at a minimum— (1) whether to require air carriers and foreign air carriers to partner with national disability organizations and disabled veterans organizations representing individuals with disabilities who use wheelchairs and scooters in developing, administering, and auditing training; (2) whether to require air carriers and foreign air carriers to use a lift device, instead of an aisle chair, to board and deplane passengers with mobility disabilities