WCHR

--passenger requires wheelchair for distance within airport but is able to ascend or descend stairs

WCHS

--passenger is able to walk but unable to ascend or descend stairs

WCHC

--passenger is paraplegic/quadriplegic, requires an on-board wheelchair and must be carried to/from cabin seat

WCMP

--manual power wheelchair

WCBD

--dry cell operated wheelchair

WCBW

--wet cell operated wheelchair