Best Answer: In aviation, a Flight Level (FL) is a standard nominal altitude of an aircraft, referenced to a world-wide fixed pressure datum of 1013.25 mbar or the equivalent setting, 29.921 inHg (the average sea-level pressure).It is not necessarily the same as the aircraft's true altitude above mean sea level.ote that an aircraft flying at flight level 320 will usually be at some other actual height above mean sea level than 32,000 feet, but since all other aircraft set their altimeters to a standard pressure, a minimal collision risk arises.
When that happens, a person loses the ability to move the muscles voluntarily, and we say that the person is paralyzed. Paralysis of the muscles of the face, arm, and leg on one side of the body is called hemiplegia (hemi means half) and usually results from damage to the opposite side of the brain. Damage to the nerves of the spinal cord affects different parts of the body, depending on the amount of damage and where it occurred. Paralysis of both lower limbs is called paraplegia, and paralysis of both arms and both legs is called quadriplegia.
Paralysis is one of the most common disabilities resulting from stroke. The paralysis is usually on the side of the body opposite the side of the brain damaged by stroke, and may affect the face, an arm, a leg, or the entire side of the body. This one-sided paralysis is called hemiplegia (one-sided weakness is called hemiparesis).