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was found that as long as the parachute was introduced to the free air
by the rocket, it would successfully recover the aircraft into its level
descent attitude under parachute. However, it can be assumed that to
minimize the chances of parachute entanglement and reduce aircraft
oscillations under the parachute, the CAPS should be activated from a
wings-level, upright attitude if at all possible.
March 2010
Information Manual 10-7
Cirrus Design Section 10
SR20 Safety Information
Landing Considerations
After a CAPS deployment, the airplane will descend at less than 1500
feet per minute with a lateral speed equal to the velocity of the surface
wind. The CAPS landing touchdown is equivalent to ground impact
from a height of approximately 10 feet. While the airframe, seats, and
landing gear are designed to accommodate the stress, occupants
must be prepared for the landing. The overriding consideration in all
CAPS deployed landings is to prepare the occupants for the
touchdown in order to protect them from injury as much as possible.
Emergency Landing Body Position
The most important consideration for a touchdown with CAPS
deployed is to protect the occupants from injury, especially back injury.
Contacting the ground with the back offset attempting to open a door
or secure items increases the likelihood of back injury. All occupants
must be in the emergency landing body position well before
touchdown. After touchdown, all occupants should maintain the
emergency landing body position until the airplane comes to a
complete stop.
The emergency landing body position is assumed with tightened seat
belt and shoulder harness by placing both hands on the lap, clasping
one wrist with the opposite hand, and holding the upper torso erect
and against the seat backs. The seat cushions contain an aluminum
honeycomb core designed to crush under impact to absorb downward
loads and help protect the spine from compression injury.
Door Position
For most situations, it is best to leave the doors latched and use the
time available to transmit emergency calls, shut down systems, and
get into the Emergency Landing Body Position well before impact. The
discussion below gives some specific recommendations, however, the
pilot's decision will depend upon all factors, including time to impact,
altitude, terrain, winds, condition of airplane, etc.
There is the possibility that one or both doors could jam at impact. If
this occurs, to exit the airplane, the occupants will have to force open a
partially jammed door or break through a door window using the
Emergency Exit Hammer located in the lid of the center armrest. This
can significantly delay the occupants from exiting the airplane.
March 2010
10-8 Information Manual
Section 10 Cirrus Design
Safety Information SR20
If the pilot elects to touchdown with a door opened, there are several
additional factors the pilot must consider: loss of door, possibility of
head injury, or injury from an object coming through the open door.
• If a door is open prior to touchdown in a CAPS landing, the
door will most likely break away from the airplane at impact.
• If the door is open and the airplane contacts the ground in a
rolled condition, an occupant could be thrown forward and
strike their head on the exposed door pillar. Contacting the
ground in a rolled condition could be caused by terrain that is
not level, contacting an obstacle such as a tree, or by transient
aircraft attitude.
• With a door open, it is possible for an object such as a tree limb
or flying debris to come through the opening and strike an
occupant.
• WARNING •
If it is decided to unlatch a door, unlatch one door only.
Opening only one door will provide for emergency egress as
well as reduce risks associated with ground contact. Typically,
this would be the copilot's door as this allows the other
occupants to exit first after the airplane comes to rest.
Water Landings
The ability of the airplane to float after a water landing has not been
tested and is unknown. However, since there is the possibility that one
or both doors could jam and use of the emergency egress hammer to
break out a window could take some time, the pilot may wish to
CAPS Landing Scenario Door Position
Empty Copilot Seat Unlatch Copilot Door
Very Little Time Before Impact Keep Doors Closed
Fire Unlatch Copilot Door
Water Landing Unlatch Copilot Door
Condition Unknown Keep Doors Closed
March 2010
Information Manual 10-9
Cirrus Design Section 10
SR20 Safety Information
consider unlatching a door prior to assuming the emergency landing
　
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