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The airplane is equipped with a self-contained emergency locator
transmitter (ELT). The transmitter and antenna are installed
immediately behind the aft cabin bulkhead, slightly to the right of the
airplane centerline. The main transmitter control switch, labeled ONOFF-
ARMED, on the transmitter is in the armed position for normal
operations. A remote switch and indicator panel is installed on the left
console near the pilot’s right knee. If rapid deceleration is detected, the
transmitter will repeatedly transmit VHF band audio sweeps at 121.5
MHz and 243.0 MHz approximately 0.5 seconds apart.
The transmitter and antenna are accessible through the avionics bay
access panel along the aft portion of the RH fuselage or the lower aft
center access panel of baggage compartment The ELT can be
removed from the airplane and used as a personal locating device if it
is necessary to leave the airplane after an accident. Eight dated “D”
cell alkaline batteries contained within the transmitter unit power the
ELT transmitter. The batteries must be replaced at specified intervals
based upon the date appearing on the battery (Refer to Airplane
Maintenance Manual).
ELT Remote Switch and Indicator Panel
The ELT remote switch and indicator panel, located on the left console
near the pilot’s right knee, provides test and monitoring functions for
the ELT. The panel contains a button labeled ON, a button labeled
RESET, and a red LED (light). The red light flashes when the ELT is
transmitting. The ON button is used to test the unit in accordance with
the maintenance manual procedures. The RESET button can be used
to cancel an inadvertent transmission. A 6-volt Lithium battery
mounted in the panel powers the LED. The battery must be replaced
at regular intervals (Refer to Airplane Maintenance Manual).
In the event of an accident:
1. Verify ELT operation by noting that the ELT indicator light on the
remote panel is flashing.
2. If possible, access the unit as described below and set the ELT
main transmitter control switch ON.
Portable use of ELT:
a. Remove access at lower aft center of baggage compartment.
March 2010
7-82 Information Manual
Section 7 Cirrus Design
Airplane and Systems Description SR22
b. Disconnect fixed antenna lead from front of unit.
c. Disconnect lead from remote switch and indicator unit.
d. Loosen attach straps and remove transmitter unit and portable
antenna.
e. Attach portable antenna to antenna jack on front of unit.
f. Set main control switch to ON.
g. Hold antenna upright as much as possible.
Fire Extinguisher
A liquefied-gas-type fire extinguisher, containing Halon 1211/1301
extinguishing agent, is mounted on the forward outboard side of the
pilot-side footwell. The extinguisher is approved for use on class B
(liquid, grease) and class C (electrical equipment) fires. The Halon
1211/1301 blend provides the best fire extinguishing capability with
low toxicity. A pin is installed through the discharge mechanism to
prevent inadvertent discharge of extinguishing agent. The fire
extinguisher must be replaced after each use.
To operate the extinguisher:
1. Loosen retaining clamp and remove the extinguisher from its
mounting bracket.
2. Hold the extinguisher upright and pull the pin.
3. Get back from the fire and aim nozzle at base of fire at the nearest
edge.
4. Press red lever and sweep side to side.
The extinguisher must be visually inspected before each flight to
assure that it is available, charged, and operable. The preflight
inspection consists of ensuring that the nozzle is unobstructed, the pin
has not been pulled, and the canister has not been damaged.
Additionally, the unit should weigh approximately 1.5 lb (0.7 kg). For
preflight, charge can be determined by ‘hefting’ the unit.
March 2010
Cirrus Design Section 7
SR22 Airplane and Systems Description
Information Manual 7-83
Hour Meters
The airplane is equipped with two hour meters located inside the
armrest storage compartment between the pilot and copilot seats. The
#1 hour meter, labeled HOBBS begins recording when the BAT 1
switch is ON and either the ALT 1 or ALT 2 switch is ON. The #2 hour
meter records flight time and is labeled FLIGHT. Recording begins
when the airplane reaches a speed of approximately 35 KIAS and is
controlled by the Engine Airframe Unit.
28 VDC for hour meter operation is supplied through the 5-amp FUEL
QTY circuit breaker on MAIN BUS 1.
Emergency Egress Hammer
An eight-ounce ball-peen type hammer is located in the center armrest
accessible to either front seat occupant. In the event of a mishap
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西锐20飞机信息手册 SR22 AIRPLANE INFORMATION MANUAL 2979(80)
