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4. Windshield Defrost ......................................................FULL OPEN
5. Alternate Induction Air............................................................... ON
Inadvertent IMC Encounter
Upon entering IMC, a pilot who is not completely proficient in
instrument flying should rely upon the autopilot to execute a 180° turn
to exit the conditions. Immediate action should be made to turn back
as follows:
1. Airplane Control ........................Establish Straight and Level Flight
2. Autopilot ............................... Engage to hold Heading and Altitude
3. Heading.................................................. Reset to initiate 180° turn
Door Open In Flight
The doors on the SR20 will remain 1-3 inches open in flight if not
latched. If this is discovered on takeoff roll, abort takeoff if practical. If
already airborne:
1. Airspeed...............................................REDUCE TO 80 – 90 KIAS
2. Land as soon as practical.
March 2010
Information Manual 3A-7
Cirrus Design Section 3A
SR20 Abnormal Procedures
Landing Procedures
Landing With Failed Brakes
One brake inoperative
1. Land on the side of runway corresponding to the inoperative
brake.
2. Maintain directional control using rudder and working brake.
Both brakes inoperative
1. Divert to the longest, widest runway with the most direct
headwind.
2. Land on downwind side of the runway.
3. Use the rudder for obstacle avoidance.
• Note •
Rudder effectiveness will decrease with decreasing airspeed.
4. Perform Emergency Engine Shutdown on Ground checklist.
Landing With Flat Tire
If a flat tire or tread separation occurs during takeoff and you cannot
abort, land as soon as conditions permit.
Main Gear
1. Land on the side of the runway corresponding to the good tire.
2. Maintain directional control with the brakes and rudder.
3. Do not taxi. Stop the airplane and perform a normal engine
shutdown.
Nose Gear
1. Land in the center of the runway.
2. Hold the nosewheel off the ground as long as possible.
3. Do not taxi. Stop the airplane and perform a normal engine
shutdown.
March 2010
3A-8 Information Manual
Section 3A Cirrus Design
Abnormal Procedures SR20
FAN
COMPRESSOR/
CONTROL
A/C 2
CONDENSER
A/C 1
Serials 1633, 1639 & subs with optional Blower Fan installed.
NOTE
ANNUN/ENGINE INST
TURN
COORD. #1
ATTITUDE #1
HSI/PFD #1
STALL
WARNING
BATTERY 2
ALT 2
ESSENTIAL
POWER
AUTOPILOT
AVIONICS
COM 1
GPS 1
STARTER
RELAY
PITOT HEAT/
COOLING FAN
12VDC
OUTLET
STROBE
LIGHTS
NAV LIGHTS
FLAPS
ESSENTIAL
COM 2
ENCODER/
XPONDER
WEATHER/
STORMSCOPE
AUDIO
PANEL
MFD
AVIONICS
FUEL QTY/HOBBS
INST
LIGHTS
PITCH TRIM
ICE PROTECTION
BATT
SR20_FM03_1453E
SKYWATCH/
TAWS
ROLL TRIM
ALT 1 ALT 2
AMMETER
BAT 2
BAT 1
ALT 1 ALT 2
MAIN DISTRIBUTION
BUS
ESSENTIAL
DISTRIBUTION BUS
NON-ESSENTIAL
ESSENTIAL
MAIN BUS 1
ALT 1
CABIN
LIGHTS
HSI/PFD #2
ATTITUDE #2
TURN
COORD. #2
MAIN BUS 2
FUEL PUMP
NON-ESSENTIAL
GPS 2
Figure 3A-1
Electrical Power Distribution (Simplified)
March 2010
Information Manual 3A-9
Cirrus Design Section 3A
SR20 Abnormal Procedures
System Malfunctions
Alternator Failure
Steady illumination of either ALT caution light in the annunciator panel
indicates a failure of the corresponding alternator. The most likely the
cause of the alternator failure is a wiring fault, a malfunctioning
alternator, or a malfunctioning control unit. Usually, electrical power
malfunctions are accompanied by an excessive rate of charge or a
discharge rate shown on the ammeter.
• Caution •
Alternators in this airplane are self-exciting. These alternators
require battery power for alternator starting; however, once
started, the alternators will provide self-generated field power
to continue operation in case of a battery failure. To assure
alternator restart power is available if the alternators fail, the
batteries should not be turned off during flight.
Serials 1005 thru 1581: A flashing ALT 1 light indicates an excessive
charging rate. This could occur with a very low BAT 1 and heavy
equipment loads. Since the loads on ALT 2 are much lower, it is
　
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