observation aircraft

acromelanism barrel magnet bitzers church-chopping fuel suction hood packing generator blackout emergency manoeuvre glessner heating mode high-density traffic airport junior proctor long abductor muscle of thumb Mardsen chart Mayombé, Massif du (Maiombe) precision of measuring instrument reliabler rubsen seed oil spann SPCS (special-purpose computing system) thermotropic liquid crystal vitriolate of soda