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Pilot/Controller Glossary

3/29/18

PCG W

−2

WIND SHEAR

− A change in wind speed and/or wind

direction in a short distance resulting in a tearing or
shearing effect. It can exist in a horizontal or vertical
direction and occasionally in both.

WIND SHEAR ESCAPE

− An unplanned abortive

maneuver initiated by the pilot in command (PIC) as
a result of onboard cockpit systems. Wind shear
escapes are characterized by maximum thrust climbs
in the low altitude terminal environment until wind
shear conditions are no longer detected.

WING TIP VORTICES

(See VORTICES.)

WORDS TWICE

a.

As a request: “Communication is difficult.

Please say every phrase twice.”

b.

As information: “Since communications are

difficult, every phrase in this message will be spoken
twice.”

WS

(See SIGMET.)
(See WEATHER ADVISORY.)

WST

(See CONVECTIVE SIGMET.)
(See WEATHER ADVISORY.)