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In addition to the individual circuit breakers, 25-amp circuit breakers
located on the primary bus in the Master Control Unit (MCU) protect
the Main Bus 1, Main Bus 2, and the Non-Essential Bus. Additionally,
15-amp circuit breakers protect the landing light and standby vacuum
pump circuits. The clock is continuously powered through a 5-amp
fuse connected to the primary bus in the MCU.
Original: 09-28-99
P/N 11934-S11 1 of 4
Cirrus Design Section 9
SR20 Supplements
Pilot’s Operating Handbook and
FAA Approved Airplane Flight Manual
Supplement
for
L-3 Avionics Systems WX500
Stormscope Sensor
When the L-3 Avionics Systems WX500 Stormscope Sensor is
installed in the Cirrus Design SR20, this Supplement is applicable and
must be inserted in the Supplements Section (Section 9) of the Cirrus
Design SR20 Pilot’s Operating Handbook. This document must be
carried in the airplane at all times. Information in this supplement adds
to, supersedes, or deletes information in the basic SR20 Pilot’s
Operating Handbook.
• Note •
This POH Supplement Revision dated Revision 01: 07-18-05
supersedes and replaces the original release of this
supplement dated 04-12-00.
Revision 01: 07-18-05
2 of 4 P/N 11934-S11
Section 9 Cirrus Design
Supplements SR20
Section 1 General
This airplane is equipped with a L-3 Avionics Systems WX500
Stormscope Sensor. The stormscope sensor output is displayed on
the Multi-Function Display (MFD).
Refer to L-3 Avionics Systems WX500 Stormscope Series II Weather
Mapping Sensor User’s Guide, P/N 009-11501-001 revision C or later
for a detailed description of the system.
• WARNING •
Do not attempt to penetrate a thunderstorm using the
Stormscope system. FAA Advisory material recommends that
pilots “avoid by at least 20 miles any thunderstorm identified
as severe or giving an intense radar echo.”
Section 2 - Limitations
1. Stormscope information displayed on the Multi-Function Display is
FOR REFERENCE ONLY and must not be used for navigation.
Section 3 - Emergency Procedures
There is no change to the basic POH Emergency Procedures when
the WX500 stormscope is installed.
Section 4 – Normal Procedures
Refer to the Multi-Function Display Pilot’s Guide installed with the
airplane for detailed operating procedures and specific display
information.
Stormscope Status Box
When the Stormscope is on, system status will be displayed in the
Stormscope status box in the upper left corner of the map page.
HDG or TRK – HDG will be displayed if an external heading input is
available. If HDG (heading) is displayed bearing to the strike will be
referenced to the airplane heading (direction nose is pointing). If TRK
(track) is displayed the bearing to the strike will be referenced to the
airplane track (direction airplane is traveling). Normally, the system will
plot strikes with reference to heading.
Revision 01: 07-18-05
P/N 11934-S11 3 of 4
Cirrus Design Section 9
SR20 Supplements
STRK or CELL – STRK will be displayed if the Strike mode is
selected. In this mode, individual strikes are plotted using the ‘X’
symbol. CELL will be displayed if the CELL mode is selected. In the
Cell mode a ‘+’ symbol is plotted for associated strikes.
RATE – The number of strikes per minute for the selected mode and
scale is indicated in a small window below the status line.
Section 5 - Performance
There is no change to the airplane performance when the WX500
stormscope is installed.
Section 6 - Weight & Balance
Weight and balance data for the WX500 stormscope is provided with
the Equipment List for each delivered airplane.
Section 7 - Systems Description
• Note •
Refer to the Multi-Function Display Pilot’s Guide installed with
the airplane for detailed operating procedures and specific
display information.
The L-3 Avionics Systems WX-500 Weather Mapping Sensor
(Stormscope) detects electrical discharges associated with
thunderstorms and displays the activity on the Multi-Function Display.
The system consists of an antenna located on top of the fuselage just
forward of the rear window and a processor unit mounted under the aft
baggage floor. The antenna detects the electrical and magnetic fields
generated by intra-cloud, inter-cloud, or cloud to ground electrical
discharges occurring within 200 nm of the airplane and sends the
“discharge” data to the processor. The processor digitizes, analyzes,
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西锐20飞机信息手册 SR22 AIRPLANE INFORMATION MANUAL 1148-126(98)
