These latter rules also apply to airships, but not to aeroplanes. These types of aircraft are too numerous to be able to identify singly, but there are many other rules to which they must submit. For instance--flying over London and similar crowded areas is prohibited; or, in the words of the R. A. C.: “Flying to the danger of the public is prohibited, particularly unnecessary flights over towns, or thickly populated areas, or over places where crouds are temporarily assembled, or over public enclosures at aerodromes at such a height as to involve danger to the public. Flying is also prohibited over River Regattas, Race meetings, meetings for public games and sports, except flights specifically arranged for in writing with the promoters of such Regattas, Meetings, etc.” If he disregard any of these regulations, the airman is liable to a fine not exceeding £20 and suspension of his flying certificate. The first Aerial Navigation Act of 1911 was not in reality a Navigation Act at all, but although that was its title, it was described as “An Act to provide for the protection of the public against dangers arising from the Navigation of Aircraft.” The penalties attached thereto were exceedingly heavy and provided that any airman disregarding the Act would be liable after conviction on indictment or on summary conviction to imprisonment for a term not exceeding six months, or to a fine not exceeding £200, or to both such imprisonment and fine. The Act included various prohibited flying areas, mostly in the neighborhood of arsenals, munition factories, and naval dockyards, or similar military areas. Certain conditions were imposed on aircraft landing in this country from abroad, as that the person in charge of the aircraft, before commencing a voyage to the United Kingdom, must apply for a clearance to a duly authorized British Consular Officer. He must make a written application, which states clearly the name and registered number of the craft; the type, the name, nationality, and the place of residence of the owner or person in charge, and of every member of the crew; and the name, profession, nationality and place of residence of every passenger (if any), the nature of the cargo (if any), the approximate time of departure, place of departure, the intended landing-place in the United Kingdom, the proposed destination, and the object of the voyage.