International classification of passenger assistance
| WCHR (WHEEL CHAIR RAMP) | Passenger who can walk inside the aircraft and up and down the stairs, but who needs a wheelchair for moving for long distances inside the terminal |
| WCHS (WHEEL CHAIR STAIRS) | Passenger who can walk inside the aircraft, but who can not walk and up and down the stairs and needs a wheelchair for moving for long distances inside the terminal |
| WCHC (WHEEL CHAIR CABIN) | Passenger who constantly needs a wheelchair for th whole duration of his/her journey, including his/her stay at the departure and arrival airports |
| DEAF | Deaf or deaf and dumb passenger |
| BLIND | Visually impaired or blind passenger |
| DEAF / BLIND | Deaf and visually impaired / blind passenger |
| DPNA | Mentally impaired passenger |
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