Aircraft
An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Common examples of aircraft include airplanes, helicopters, airships (including blimps), gliders, and hot air balloons.
Airworthiness
Airworthiness is the measure of an aircraft's suitability for safe flight. Certification of airworthiness is conferred by a certificate of airworthiness from the state of aircraft registry national aviation authority, and is maintained by performing the required maintenance actions.
Aviation
Aviation, or air transport, refers to the activities surrounding mechanical flight and the aircraft industry. Aircraft includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as balloons and airships.
Safety
Safety is the state of being "safe" (from French sauf), the condition of being protected from harm or other non-desirable outcomes. Safety can also refer to the control of recognized hazards in order to achieve an acceptable level of risk.
Safety
Una salus victis nullam sperare salutem.
The only safe course for the defeated is to expect no safety.
Virgil, Aeneid, II.354
Virgil, Aeneid, II.354
Safety
When you have overcome one temptation, you must be ready to enter the lists with another. As distrust, in some sense, is the mother of safety, so security is the gate of danger. A man had need to fear this most of all, that he fears not at all.
Thomas Brooks, p. 532. cited in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895).
Safety
Choosing safety is a choice of life over career.
Warren Farrell (2005) Why Men Earn More. p. 35
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