Vickers Type 161
... that the 1931 Vickers Type 161 may have been the first aircraft to be fitted with in-flight adjustable elevator trims?
... that the 1931 <b id="mwDeE"><a href="./Vickers_Type_161" id="mwDeI" rel="mw:WikiLink" title="Vickers Type 161">Vickers Type 161</a></b> may have been the first aircraft to be fitted with in-flight adjustable <a href="./Flight_control_surfaces#Elevator_trim" id="mwDeM" rel="mw:WikiLink" title="Flight control surfaces">elevator trims</a>?