Which SSR code is used to indicate a mentally disabled passenger who requires a walker?

The correct choice for indicating a mentally disabled passenger who requires a walker is the SSR code DPNA. This code stands for "Disabled Passenger Needs Assistance," specifically used to denote passengers who have a mental disability and may require additional support during their travel experience. DPNA ensures that the airline staff can provide appropriate care and accommodate the individual’s needs throughout the journey, including assistance with boarding, deplaning, and any necessary in-flight services.

The other options represent different categories of special assistance requests. For instance, DEAF is designated for passengers who are deaf or hearing impaired, while BLND is for passengers who are blind or visually impaired. DIVE refers to a specific service related to divers and does not apply to the scenario involving a mentally disabled passenger. Understanding the specific SSR codes helps ensure that all passengers receive the correct support based on their individual needs while traveling.