Cirrus SR22T User Manual

26 of 30 P/N 13772-135
Section 9 Cirrus Design
Supplements SR22 / SR22T
Underspeed Protection Mode (Optional)
When installed, to discourage aircraft operation below minimum
established airspeeds the AFCS will automatically enter Underspeed
Protection Mode when the Autopilot is engaged and airspeed falls
below the minimum threshold. If aircraft stall warning system is not
operational, autopilot underspeed protections that depend on that
system will also not be functional (affects altitude critical modes only:
ALT, GS, GP, TO, and GA).
As described in the following table, when the aircraft reaches
predetermined airspeeds a yellow MINSPD annunciation will appear
above the airspeed indicator and a single aural “AIRSPEED” will
sound to alert the pilot to an impending underspeed condition.
The system differentiates two types of vertical modes based on which
vertical Flight Director mode is selected; Altitude-Critical - where
terrain hazards are more probable and minimized altitude loss is
critical and Non-Altitude Critical - which generally correspond with
activities that can afford exchange of altitude for airspeed without
introducing terrain hazards.
Altitude-Critical Mode (ALT, GS, GP, GA, TO)
Upon stall warning system activation, the AFCS will abandon its Flight
Director and Autopilot reference modes and sacrifice altitude for
airspeed. The system will hold wings level and airspeed will
progressively increase by 1 knot per second until stall warning
becomes inactive. The system will then increase airspeed an
additional 2 knots above the speed at which the stall warning
discontinued. Recovery may be initiated in one of three ways:
1. Add sufficient power to recover to a safe flight condition.
If a small power addition is made, the AFCS will pitch the aircraft
to maintain speed reference. If a large power addition is made the
AFCS recognizes it via acceleration and the AP/FD will transition
Anti-Ice System Flaps
MINSPD
Annunciations
Aural Alert
Annunciations
OFF
0% 80 KIAS 85 KIAS
50% 76 KIAS 80 KIAS
100% 70 KIAS 80 KIAS
ON
0% 85 KIAS 90 KIAS
50% 81 KIAS 85 KIAS
Revision 03: 12-14-10

Cirrus SR22T Specifications

General

Manufacturer	Cirrus Aircraft
Engine	Continental TSIO-550-K
Horsepower	315 hp
Max Takeoff Weight	3, 600 lbs
Service Ceiling	25, 000 ft
Cabin Width	49 in
Cabin Height	50 in
Seating Capacity	4
Avionics	Cirrus Perspective+ by Garmin
Category	Single-engine piston aircraft
Propeller	Hartzell 3-blade composite
Wingspan	38 ft 4 in
Length	26 ft
Height	8 ft 11 in
Maximum Cruise Speed	213 KTAS
Fuel Capacity	92 gallons
Stall Speed	64 knots
Safety Features	Cirrus Airframe Parachute System (CAPS)
Cruise Speed	183 knots