Explanatory notes
… as : (1) Nacelles. (2) Envelopes and parts thereof (strips or panels). (3) Carrier hoops. (4) Ballonets. … fairings, panels, partitions, luggage compartments, floors, instrument panels, frames, doors, escape chutes and slides, … and their components (spars, ribs, cross-members). (3) Control surfaces, whether or not movable (ailerons, slats, …