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Hold short
Do not enter or cross the taxiway or runway specified by the controller. If there is a painted hold line, do not cross it.
Taxi to
In the absence of holding instructions, a clearance to “taxi to” any point other than an assigned takeoff runway is a clearance to cross all runways that intersect the taxi route to that point. It does not include authorization to taxi onto or cross the assigned takeoff runway at any point.
Nondirectional Radio Beacon (Ndb)
An L/MF or UHF radio beacon transmitting nondirectional signals whereby the pilot of an aircraft equipped with direction finding equipment can determine the bearing to or from the radio beacon and “home” on or track to or from the station.
Vestibular system
Organs found in the inner ear that sense position by the way we're balanced.
Structural Ice
Pressure on the elevator may help to reattach airflow to the aileron. How quickly a surface collects ice depends in part on its shape. Thin, modern wings will be more critical with ice on them than thick, older wing sections.
Wing Stall
The wing will ordinarily stall at a lower angle of attack, and thus a higher airspeed, when contaminated with ice. Even small amounts of ice will have an effect, and if the ice is rough, it can be a large effect.
MAC
Mid Air Collision
TCAS
Traffic Alert and Collision Avoidance Systems Technology in the cockpit can help pilots to see and avoid other aircraft. All air carrier aircraft are equipped with Traffic Alert and Collision Avoidance Systems.
Airport Advisory Area
An area within 10 statute miles (SM) of an airport where a control tower is not operating, but where a flight service station (FSS) is located. At these locations, the FSS provides advisory service to arriving and departing aircraft.
Vestibular Illusions
In the absence of visual reference, we rely on our vestibular system to keep us oriented. But as previously explained, this system is totally unreliable for this purpose when in motion.
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