old postings but as nobody has replied germany only uses d a multi engine with a mtow over kg d b multi engine to kg d c multi engine to kg d e single engine below kg d f single engine to kg d g multi engine below kg d h rotary wing d k powered gliders d l airships d m ultralights and d o free balloons for aircraft so nothing outside of daa to drz philipines uses rp for republic philippines i presume they have some exception from the icao to use it the russians only use ra and rf for aircraft swaziland fiji fiji uses dq from dq to avoid confusuion because d is used by swaziland dq is not used by germany for aircraft