曝光台 注意防骗
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body position in order to provide a ready escape path should the
airplane begin to sink.
Post Impact Fire
If there is no fire prior to touchdown and the pilot is able to shut down
the engine, fuel, and electrical systems, there is less chance of a post
impact fire. If the pilot suspects a fire could result from impact,
unlatching a door immediately prior to assuming the emergency
landing body position should be considered to assure rapid egress.
Ground Gusts
If it is known or suspected that ground gusts are present in the landing
zone, there is a possibility that the parachute could drag the airplane
after touchdown, especially if the terrain is flat and without obstacles.
In order to assure that the occupants can escape the airplane in the
timeliest manner after the airplane comes to rest, the pilot may elect to
unlatch the copilot's door for the CAPS landing. Occupants must be in
the Emergency Landing Body Position for touchdown. Occupants must
not loosen seat belts until the airplane comes to rest. When the
airplane comes to rest, the occupants should exit the airplane and
immediately move upwind to prevent a sudden gust from dragging the
airplane in their direction.
March 2010
10-10 Information Manual
Section 10 Cirrus Design
Safety Information SR20
Taxiing, Steering, and Braking Practices
Cirrus aircraft use a castering nose wheel and rely on aerodynamic
forces and differential braking for directional control while taxiing.
Proper braking practices are therefore critical to avoid potential
damage to the brakes.
The most common cause of brake damage and/or failure is the
creation of excessive heat through improper braking practices. Pilots
unaccustomed to free castering nose wheel steering may be inclined
to “ride” the brakes to maintain constant taxi speeds and use the
brakes excessively for steering.
Proper Operating Practices
When taxiing, directional control is accomplished with rudder
deflection and intermittent braking (toe taps) as necessary. Use only
as much power as is necessary to achieve forward movement.
Deceleration or taxi speed control using brakes but without a reduction
in power will result in increased brake temperature.
On flat, smooth, hard surfaces, do not exceed 1000 RPM maximum
continuous engine speed for taxi. Power settings slightly above 1000
RPM are permissible to start motion, for turf, soft surfaces, and on
inclines. Use minimum power to maintain constant taxi speed.
“Riding the brakes” while taxiing is similar to driving a car with one foot
on the brake and one foot on the gas. This causes a continuous build
up of energy that would otherwise be moving the airplane.
Observe the following operating practices:
• Verify that the parking brake is completely disengaged before
taxi.
• The rudder is effective for steering on the ground and should be
used.
• Use only as much power (throttle) as is necessary to achieve
forward movement. Keep in mind, any additional power added
with the throttle will be absorbed in the brakes to maintain
constant speed.
• Use rudder deflection and the minimum necessary inputs of
differential braking to achieve directional control.
March 2010
Information Manual 10-11
Cirrus Design Section 10
SR20 Safety Information
• Do not “ride the brakes”. Pilots should consciously remove
pressure from the brakes while taxiing. Failure to do so results
in excessive heat buildup, premature brake wear, and
increased possibility of brake failure or fire.
• Avoid unnecessary high-speed taxiing. High-speed taxiing may
result in excessive demands on the brakes, increased brake
wear, and the possibility of brake failure or fire.
• Brakes have a large energy absorbing capacity; therefore,
cooling time should be considered. Energy absorbed during a
few seconds of deceleration can take up to an hour to dissipate.
Always allow adequate cooling time after brake use.
• Allow a cooling period following a high-energy braking event.
High-energy braking can include an aborted takeoff or the
equivalent energy required for a Maximum Gross Weight fullstop
from 70 knots in less than 1000 feet.
Brake Maintenance
The brake assemblies and linings should be checked at every oil
change (50 hours) for general condition, evidence of overheating, and
deterioration. Serials 1005 thru 2030 before SB 2X-05-01: At every
annual/100-hour inspection the brakes should be disassembled, the
brake linings should be checked and the O-rings must be replaced.
Refer to Section 8, Handling, Servicing, and Maintenance for specific
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