Medical oxygen masks are disposable and used for oxygen therapy. Masks are made of plastic, silicone, or rubber. Oxygen therapy requires monitoring due to potential health risks. Global market for disposable masks expected to reach $1.1 billion by 2023
Aviation began in 18th century with hot air balloon development. First powered flight by Clément Ader in 1890. Otto Lilienthal achieved first successful controlled gliding flight in 1896. Wright brothers built first powered airplane in early 1900s
Cumulonimbus forms from water vapor condensing in lower troposphere. Clouds typically reach heights up to 21,000 meters. Well-developed clouds have flat anvil-shaped tops. Forms in clusters, alone, or along squall lines
CRM was founded by David Beaty in 1969 to improve aviation safety. NTSB recommended CRM after United Airlines Flight 173 crash in 1978. NASA psychologist John Lauber coined the term in 1979. United Airlines launched first comprehensive CRM program in 1981
NOTOC informs pilots about dangerous goods and special loads on aircraft. Aircraft operator must provide accurate written information to PIC. Information must be legible and kept on ground and available during flight
Part-IS applies to maintenance, CAMO, training, and air navigation service providers. Regulation applies to aircraft, helicopters, and air traffic controller training organisations. Part-66 competent authorities are exempt from Part-IS requirements