Old postings but as nobody has replied Germany only uses D A multi engine with a MTOW over 20 000 kg D B multi engine 14 000 to 20 000 kg D C multi engine 5 700 to 14 000 kg D E single engine below 2 000 kg D F single engine 2 000 to 5700 kg D G multi engine below 2 000 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 3DQ to avoid confusuion because 3D is used by Swaziland DQ is not used by Germany for aircraft