EST Extra seat
MEDA Medical case (MEDIF may be required)
PETC Pet in cabin (specify details)
ROST Seat request (specific seat, row number or zone)
UMNR Unaccompanied Minor (followed by age, e.g. UM08) OTHs other services for which no code exists, followed by details
WCHC Wheelchair (Cabin)
WCHR Wheelchair Ramp)
Wchs wheelchair (Step)