Marinens Flyvebaatfabrikk M.F.4
... that the Marinens Flyvebaatfabrikk M.F.4 floatplane, introduced in 1918, was the Royal Norwegian Navy Air Service's first purpose-built trainer aircraft?
... that the <b id="mwArk"><a href="./Marinens_Flyvebaatfabrikk_M.F.4" id="mwAro" rel="mw:WikiLink" title="Marinens Flyvebaatfabrikk M.F.4">Marinens Flyvebaatfabrikk M.F.4</a></b> floatplane, introduced <a href="./1918_in_aviation" id="mwArs" rel="mw:WikiLink" title="1918 in aviation">in 1918</a>, was the <a href="./Royal_Norwegian_Navy_Air_Service" id="mwArw" rel="mw:WikiLink" title="Royal Norwegian Navy Air Service">Royal Norwegian Navy Air Service</a>'s first purpose-built <a class="mw-redirect" href="./Trainer_(aircraft)" id="mwAr0" rel="mw:WikiLink" title="Trainer (aircraft)">trainer aircraft</a>?