Declension table of ?vimana

Neuter	Singular	Dual	Plural
Nominative	vimanam	vimane	vimanāni
Vocative	vimana	vimane	vimanāni
Accusative	vimanam	vimane	vimanāni
Instrumental	vimanena	vimanābhyām	vimanaiḥ
Dative	vimanāya	vimanābhyām	vimanebhyaḥ
Ablative	vimanāt	vimanābhyām	vimanebhyaḥ
Genitive	vimanasya	vimanayoḥ	vimanānām
Locative	vimane	vimanayoḥ	vimaneṣu

Compound vimana -

Adverb -vimanam -vimanāt