Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов, Страница: 908 / 923

Page 15
Pilot’s Operating Manual
Revision A1: Nov, 2002
Hawker 800XP Pro Line 21
Section VII - SAFETY INFORMATION
Windshears are rapid, localized changes in wind direction, which can occur vertically as well as
horizontally. Windshear can be very dangerous to all airplanes, large and small, particularly on
approach to landing when airspeeds are slow.
A horizontal windshear is a sudden change in wind direction or speed that can, for example, transform
a headwind into a tailwind, producing a sudden decrease in indicated airspeed because of the inertia
of the airplane. A vertical windshear, is a sudden updraft or downdraft. Microbursts are intense, highly
localized severe downdrafts.
The prediction of windshears is far from an exact science. Monitor your airspeed carefully when flying
near storms, particularly on approach. BE MENTALLY PREPARED TO ADD POWER AND GO
AROUND AT THE FIRST INDICATION THAT A WINDSHEAR IS BEING ENCOUNTERED.
Flight In Icing Conditions
Every pilot should be intimately acquainted with the FAA Approved National Weather Service definitions
for ice intensity provided below:
It is the pilot’s primary responsibility to understand limitations which restrict the use of the airplane in
icing conditions and the conditions which may exceed the systems capacity.
Pilots and airplane owners must carefully review the Pilot’s Operating Manual and FAA Approved
Airplane Flight Manual in order to ascertain the required operable equipment needed for flight in icing
conditions. In addition, they must ascertain from the same source the limits of approval or certification
of their airplane for flight in icing conditions, and plan the flight accordingly, if icing conditions are known
or forecast along the route.
Even airplanes fully equipped and certified for flight in the icing conditions described in Appendix C to
14 CFR Part 25 must avoid flights into those conditions defined by the National Weather Service as
“severe”. No airplane equipped with any combination of de-icing/anti-icing equipment can be expected
to cope with such conditions. As competent pilots know, there appears to be no predictable limits for the
severest weather conditions. For essentially the same reasons that airplanes, however designed or
Intensity Ice Accumulation
Trace
Ice becomes perceptible. Rate of accumulation slightly
greater than rate of sublimation. It is not hazardous even
though deicing/anti-icing equipment is not utilized,
unless encountered for an extended period of time
(over 1 hour).
Light
The rate of accumulation may create a problem if flight is
prolonged in this environment (over 1 hour). Occasional
use of deicing/anti-icing equipment removes/prevents
accumulation. It does not present a problem if the
deicing/anti-icing equipment is used.
Moderate
The rate of accumulation is such that even short
encounters become potentially hazardous and use of
deicing/anti-icing equipment or diversion is necessary.
Severe
The rate of accumulation is such that deicing/anti-icing
equipment fails to reduce or control the hazard.
Immediate diversion is necessary.