| 1. | In World War I, aerial navigation was done mostly by sight.
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| 2. | Field units were given maps that were only of use for aerial navigation.
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| 3. | He also completed an engineering course and studied aerial navigation.
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| 4. | Once released and back in Britain, Brown continued to develop his aerial navigation skills.
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| 5. | This no-fly zone, designated P56 on FAA aerial navigation charts, is well-known to pilots.
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| 6. | The science of aerial navigation continued to develop and has been mastered since the 1904 Exposition.
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| 7. | He was seconded to the Royal Flying Corps where he focussed on radio and aerial navigation.
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| 8. | As a result, he became the first person to be prosecuted under the 1913 Aerial Navigation Act.
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| 9. | He was a great believer in aerial navigation and devoted considerable time to the study of the subject.
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| 10. | Lighthouses mark dangerous coastlines, hazardous shoals, reefs, and safe entries to harbors, and can assist in aerial navigation.
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