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OAT |
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Outside air temperature. The temperature of the air outside an aircraft measured by a probe with a cockpit gauge readout. OAT affects the measurement of indicated airspeed and its value is needed to calculate true airspeed. At high speeds kinetic heating demands correction to the indicated OAT for true outside air temperature.
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Omega
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High accuracy, very-low frequency (VLF) long-range navigation system of the hyperbolic type, covering the entire earth down to the surface from eight ground-based transmitters. Used principally by airliners, military aircraft and intercontinental business aircraft.
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ONLINE CONNECTIONS
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Change of aircraft but not airlines
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OVERSHOOT
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To land well beyond a runway or planned
spot. Opposite of Undershoot.
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PANTS
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A popular word for streamlined, non-load bearing fairings to cover landing wheels.
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PAPI
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Precision approach path indicator, a system of coloured lights installed at the approach end of a runway which provides visual guidance to the correct glidepath. A successor to
VASI.
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PAR
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Precision Approach Radar, a ground-radar-based instrument approach providing both horizontal and vertical guidance
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PATTERN
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The path of aircraft traffic around an airfield, at an established height and direction. At tower-controlled fields the pattern is supervised by radio (or, in non-radio or emergency conditions by red and green light beams) by air traffic controllers.
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PAX
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Passengers. POB - (number of) persons on board. Also SOB, souls on board.
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PAYLOAD
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Anything that an aircraft carries beyond what is required for its operation during flight, theoretically that from which revenue is derived, such as cargo and passengers.
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PILOT IN COMMAND (PiC)
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The pilot responsible for the operation and safety of an aircraft during flight time.
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PITCH
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Of the three axes in flight, this specifies the vertical action, the up-and-down movement.
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PNR
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Passenger name Record. A five character alpha numeric number.
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POH
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Pilot's operating handbook, an aircraft's `owner's manual'.
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POSITIVE CONTROL
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The separation of all air traffic within designated airspace by air traffic control.
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POWER
LOADING
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The Gross Weight of an airplane
divided by the rated horsepower, computed
for Standard Air density.
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PPL
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Private Pilot's Licence. Also PPL(H) for helicopters, PPL(SLMG) for self-launched motor gliders.
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PPO
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Prior permission only. Certain airfields or events require advance notification (by telephone, for example) of your intended arrival. Also PNR, prior notice required, and PPR, prior permission required.
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PTA
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Pre-Paid Ticket Advice.
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PURPLE AIRSPACE
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Special temporary airways created for flights by certain members of the royal family, notified by
NOTAM.
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PUSHER
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A propeller mounted in back of its engine, pushing an aircraft through the air, as opposed to a TRACTOR configuration.
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