Zifukwa zazikulu zomwe waya wa RV sizigwiritsidwa ntchito pokongoletsa kunyumba ndi motere:
. Ngakhale mawaya ofewa ali ndi mawonekedwe ena
Mawaya ali ndi maubwino nthawi zina, koma m'malo okongoletsa apanyumba, ayenera kukhala ndi mphamvu zamakina komanso kulimba kupirira tsiku lililonse kukoka ndi kuvala. Mawaya a RV ali ofewa kwambiri ndipo amatha kuwonongeka pakugwiritsa ntchito.
. Mawaya a RV ali ofewa
Mwina sizingakhale zokhazikika ngati ma waya a BVR kapena BV atakhazikika ndipo amakonda kumasula mfundo zokhazikika.
