Cirrus System 55X Autopilot Airplane Maintenance Manual

Brand
Cirrus
Model
System 55X Autopilot
Type
Airplane Maintenance Manual

This manual is also suitable for

CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
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EFFECTIVITY:
SYSTEM 55X AUTOPILOT
1. DESCRIPTION
This section covers those systems and components which use inputs to the system to automatically con-
trol the flight path of the aircraft through adjustment to the pitch/roll axis or wing lift characteristics and pro-
vide visual cues for flight path guidance. This includes the System 55X Autopilot system.
The S-TEC System 55X is a dual axis autopilot system that provides roll stability, heading hold, NAV/GPS
tracking, altitude hold, vertical speed selection, automatic glideslope capture, and automatic 45° intercept
to desired flight path capabilities controlled via the roll-trim cartridge and pitch servo. (See Figure 22-111)
The system components consist of a Flight Guidance Programmer/Computer, Altitude Selector/Alerter,
Altitude Transducer, Turn Coordinator, and HSI/PFD/GIA2. The operating controls for the autopilot are
located on the Flight Guidance Programmer/Computer.
Through panel mounted switches and the vertical speed knob, the Flight Guidance Programmer/Computer
serves the function of converting operator commands to logic signals for the roll and pitch computer func-
tions. The roll computer receives signal inputs from the Turn Coordinator and HSI/PFD/GIA2 to compute
roll commands for stabilization, turns, radio intercepts, heading and tracking. The pitch computer receives
signal inputs from the Altitude Transducer, accelerometer, glideslope deviations, and Altitude Selector/
Alerter.
Serials 22-0435 thru 22-1306 after SB 2X-22-03, 1307 & subs, 22T-0001 & subs with optional installation:
The Flight Director is a visual reference displayed on the Primary Flight Display (PFD) to simplify flight by
instrument navigation with or without the autopilot coupled. This feature requires System 55X Autopilot and
PFD. The Flight Director display consists of a wedged Reference Symbol, indicating airplane attitude, and
inverted-wedge Command Bars, indicating the recommended course attitude. To maintain selected course
while in manual flight mode, the pilot maneuvers the airplane so the top of the Reference Symbol fits into
the notch of the Command Bars.
The autopilot generates Flight Director Command Bars from modes selected on the Autopilot Computer,
including HDG (Heading), NAV (VOR, LOC, or GPS), GPSS (GPS Steering), ALT (Altitude Hold), GS
(Glideslope), and VS (Vertical Speed). The system consists of two lighted push buttons mounted on the
upper LH instrument panel for uncoupling and recoupling the autopilot, and wiring harnesses for System
55X Autopilot and PFD communication.
Serials w/ Avidyne Avionics: The S-TEC System 55X is powered by 28 VDC through the 5-amp AUTOPI-
LOT circuit breaker on the Essential Avionics Bus.
Serials w/ Perspective Avionics: The S-TEC System 55X is powered by 28 VDC through the 5-amp KEY-
PADS / AP CTRL circuit breaker on the Essential Avionics Bus.
For additional information on the autopilot system integration, see the S-TEC System 55X Autopilot Pilot’s
Operating Handbook. (Refer to 05-10)
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
2. TROUBLESHOOTING
Trouble Probable Cause Remedy
Unexpected flight characteristics
with autopilot engaged.
Moisture in static traps and/or
sump.
Check traps and sump for mois-
ture. Blow out lines.
Moisture in static line. Check lines for moisture. Perform
System Test - Static System
Plumbing (Refer to 34-10).
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
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EFFECTIVITY:
3. MAINTENANCE PRACTICES
A. Flight Guidance Programmer/Computer (See Figure 22-112)
(1) Removal - Flight Guidance Programmer/Computer
(a) Set BAT 1, BAT 2, and AVIONICS master switches to OFF positions.
(b) Pull AUTOPILOT circuit breaker.
(c) Insert hex wrench into front panel bolt hole and engage locking screw.
(d) Turn locking screw counter-clockwise to loosen locking cam. Cam will move the trans-
ceiver unit out 1/4” and disengage from the electrical connectors.
(e) Pull Flight Guidance Programmer/Computer from mounting tray
(2) Installation - Flight Guidance Programmer/Computer
(a) With light to medium pressure, push Guidance Programmer/Computer into mounting tray
to engage electrical connectors.
(b) Insert hex wrench into front panel bolt hole and engage locking screw.
(c) Turn locking screw clockwise to tighten locking cam.
(d) Reset AUTOPILOT circuit breaker.
(e) Perform the following Functional Test whenever the original Flight Guidance Programmer/
Computer is replaced with a different Flight Guidance Programmer/Computer:
1
Perform Functional Test - Flight Guidance Programmer/Computer. (Refer to 22-11)
(3) Functional Test - Flight Guidance Programmer/Computer
(a) Serials 22-equipped with HSI only; Ensure Flight Guidance Programmer/Computer is con-
figured as a NSD-360 compatible unit.
(b) Serials 22-equipped with PFD only; Ensure Flight Guidance Programmer/Computer is
configured as a KCS-55 compatible unit.
Note: The following steps are to be performed in-flight in VFR smooth air.
(c) Serials 22-equipped with PFD and Serials 22-equipped with HSI: While NAV (without
GPSS) mode is engaged on the System 55X, using a GNS-430 GPS source, insert an
appropriately sized screwdriver into the slotted hole to perform alignment procedures in
accordance with the STEC installation instructions.
Note: The following steps are required for airplanes equipped with PFD only.
(d) Engage the 55x in HDG mode and allow aircraft to “settle on heading bug”. If heading bug
agrees with aircraft heading, the system is calibrated. Otherwise, complete the remaining
calibration steps.
(e) Turn both GNS-430 units off.
(f) Enter the setup mode on the PFD by simultaneously pressing and holding L1 and L3 line
select keys until the count down timer in the lower left corner of the display indicates zero
seconds.
(g) Turn both GNS-430's units back on.
(h) Press R3 line select key “Perform A/P Cal”.
(i) Press L1 line select key "Sync HDG”. Autopilot should immediately command aircraft to
turn toward heading bug.
(j) Press L4 line select key “Back to PFD”.
(k) Verify HDG mode accurately tracks heading bug. If autopilot does not track heading bug
correctly, repeat previous calibration steps.
(l) Engage NAV (without GPSS) mode on autopilot.
(m) Enter flight plan or waypoint and verify NAV mode accurately tracks flight plan. If autopilot
does not track NAV mode correctly, repeat previous calibration steps.
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
B. Altitude Selector/Alerter (See Figure 22-112)
(1) Removal - Altitude Selector/Alerter
(a) Set BAT 1, BAT 2, and AVIONICS master switches to OFF positions.
(b) Pull AUTOPILOT circuit breaker.
(c) Remove MFD. (Refer to 31-60)
(d) Disconnect cable from Altitude Selector/Alerter.
(e) Remove screws securing Altitude Selector/Alerter to instrument panel.
(f) Remove Altitude Selector/Alerter from airplane.
(2) Installation - Altitude Selector/Alerter
(a) Align Altitude Selector/Alerter over instrument panel mounting holes and secure with
screws.
(b) Connect cable to Altitude Selector/Alerter.
(c) Install MFD. (Refer to 31-60)
(d) Reset AUTOPILOT circuit breaker.
C. Altitude Transducer (Refer to 22-10)
D. Turn Coordinator (Refer to 34-20)
E. Autopilot Disconnect Switch
The autopilot disconnect switch is integral to the control yoke. For maintenance practices pertinent to
the control yoke, see Flight Controls. (Refer to 27-10)
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 5
Serials w/o PFD
EFFECTIVITY:
Figure 22-111
System 55X Schematic - Serials w/o PFD (Sheet 1 of 3)
T
U
R
N
C
O
O
R
D
I
N
A
T
O
R
2
M
I
N
L
R
SYSTEM 55X AUTOPILOT
ALTITUDE/VERTICAL SPEED SELECTOR
TURN COORDINATOR
HSI
GNS 430 TRANSCEIVER
ROLL TRIM CARTRIDGE
SR22_MM22_1339B
PITCH TRIM CARTRIDGE
ALTITUDE TRANSDUCER
15 Jun 2010
22-11
Page 6
Serials w/ PFD and Avidyne Avionics
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
Figure 22-111
System 55X Schematic - Serials w/ PFD and Avidyne Avionics (Sheet 2 of 3)
T
U
R
N
C
O
O
R
D
I
N
A
T
O
R
2
M
I
N
L
R
TURN COORDINATOR
SYSTEM 55X AUTOPILOT
ROLL TRIM CARTRIDGE
SR22_MM22_2145
PITCH TRIM CARTRIDGE
FLIGHT DIRECTOR
SWITCHES
PITCH TRIM SERVO
GNS 430 TRANSCEIVER #2
GNS 430 TRANSCEIVER #1
PFD FAIL
RELAY
ALTITUDE TRANSDUCER
PFD
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 7
Serials w/ PFD & Perspective Avionics
EFFECTIVITY:
Figure 22-111
System 55X Schematic - Serials w/ PFD & Perspective Avionics (Sheet 3 of 3)
SR22_MM22_3018
A/P DISC
SWITCH
L
R
S
T
H
D
T
R
K
A
L
T
R
D
Y
D
N
T
R
I
M
U
P
2
M
I
N
T
U
R
N
C
O
O
R
D
I
N
A
T
O
R
H
I
L
O
N
O
I
T
A
M
R
O
F
N
I
H
C
T
I
P
O
N
MFD
PFD
INTEGRATED
AVIONICS UNIT 2
FLIGHT DIRECTOR
SWITCHES
(OPTIONAL)
A
P
O
N
A
P
O
F
F
F
D
O
N
TURN COORDINATOR
ROLL TRIM CARTRIDGE
PITCH TRIM
CARTRIDGE
PITCH TRIM
SERVO
ALTITUDE TRANSDUCER
SYSTEM 55X/55SR
AUTOPILOT
15 Jun 2010
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Page 8
Serials 22-0002 & subs w/ Avidyne Avionics
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
Figure 22-112
System 55X Installation - Serials 22-0002 & subs w/ Avidyne Avionics (Sheet 1 of 2)
Serials 22-0002 & subs w/ System 55X and Avidyne Avionics.
ALTITUDE
TRANSDUCER
(REF)
Serials 22-0002 thru 22-0434
and 22-0435 and subs
w/o PFD.
1
2
4
LEGEND
1. Screw
2. Cable Connector
3. Altitude/Vertical Speed Selector
4. Flight Guidance Program/Computer
3
SR22_MM22_1340D
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 9
Serials w/ Perspective Avionics
EFFECTIVITY:
Figure 22-112
System 55X Installation - Serials w/ Perspective Avionics (Sheet 2 of 2)
ALTITUDE
TRANSDUCER
(REF)
4
Serials w/ Perspective Avionics and System 55X.
LEGEND
4. Flight Guidance Program/Computer
SR22_MM22_3022A
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CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
F. Pitch Servo (See Figure 22-113)
(1) Removal - Pitch Servo
(a) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(b) Pull AUTOPILOT circuit breaker.
(c) Remove access panel CF5. (Refer to 06-00)
(d) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
condenser. (Refer to 21-50)
(e) Disconnect pitch servo plug from socket.
Note: Note location of bridle cable clamps on elevator cable to facilitate reinstalla-
tion.
(f) Remove bolts, nuts, and clamps securing bridle cable to elevator cable.
(g) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
screws, washers, and nuts securing fairleads, bridle cable, and elevator cable to fairlead
bracket.
(h) Remove bolts and washers securing pitch servo to mounting bracket and remove pitch
servo from airplane.
(2) Disassembly - Pitch Servo
(a) Remove screws and washers securing capstan cover to capstan.
(b) Remove cable guards.
(c) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Remove
cotter pin, nut, washers, spacer, and bolt securing pulley and cable keeper to mounting
bracket.
(d) Remove cotter pin, nut, and washer securing tension washers to capstan.
(e) Loosen set screw securing bridle cable stop-ball to capstan recess.
(f) Remove stop-ball from capstan recess and unwrap bridle cable from capstan.
(g) Remove screw and washer securing cover to servo motor.
(3) Reassembly - Pitch Servo
(a) Place tension washers on capstan and secure with washer and nut.
(b) Perform Adjustment/Test - Pitch Servo Torque. (Refer to 22-11)
(c) Insert and depress bridle cable stop-ball into capstan recess and tighten set screw.
(d) Serials 22-0002 thru 22-1367: Wrap bridle cable around servo capstan.
1
On servo capstan, position bridle cable stop-ball between 11 o’clock and 1 o’clock
positions (stop-ball at top of capstan), and wrap aft bridle cable 540° counter-clock-
wise.
2
On servo capstan, position bridle cable stop-ball between 11 o’clock and 1 o’clock
positions (stop-ball at top of capstan), and wrap forward bridle cable 180° clockwise.
(e) Serials 22-1368 & subs, 22T-0001 & subs: Wrap bridle cable around servo capstan.
1
On servo capstan, position bridle cable stop-ball at 3 o’clock position (stop-ball at
back of capstan), and wrap long end of bridle cable 660° clockwise.
2
On servo capstan, position bridle cable stop-ball at 3 o’clock position (stop-ball at
back of capstan), and wrap short end of bridle cable 660° counter-clockwise.
Note: Align cable keeper so arm extends through mounting bracket hole but
does not contact pulley or mounting bracket.
(f) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Position
pulley and cable keeper to mounting bracket and secure with bolt, washers, spacer, nut,
and cotter pin.
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
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EFFECTIVITY:
(g) Install cable guards.
(h) Position capstan cover to capstan and secure with screws and washers.
(i) Position cover to servo motor and secure with screw and washer.
(4) Installation - Pitch Servo
(a) Position pitch servo to mounting bracket and secure with bolts and washers.
(b) Perform Adjustment/Test - Bridle Cable Tension. (Refer to 22-11)
(c) Connect pitch servo plug to socket.
(d) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Install
condenser. (Refer to 21-50)
(e) Install access panel CF5. (Refer to 06-00)
(f) Reset AUTOPILOT circuit breaker.
(5) Adjustment/Test - Pitch Servo Torque
(a) Acquire necessary tools, equipment, and supplies.
(b) Insert pins of spanner adapter into capstan tooling holes.
(c) Position dial torque wrench to spanner adapter.
(d) Push servo flapper down and adjust clutch torque to 35.0 ± 3.0 in-lb (3.9 ± 0.3 Nm).
Note: If it is necessary to rotate nut for cotter pin installation, it is allowable to
remove thinnest (0.032”) tension washer from stackup to maintain specified
torque.
(e) Install new cotter pin. If capstan nut must be rotated to install cotter pin, verify clutch
torque is within recommended torque settings.
(6) Adjustment/Test - Bridle Cable Tension - Serials 22-0002 thru 22-1367
(a) Acquire necessary tools, equipment, and supplies.
(b) Remove access panel RE1. (Refer to 06-00)
(c) Serials 22-0002 thru 22-0497: Insert lockout pin at elevator empennage actuation pulley.
Description P/N or Spec. Supplier Purpose
Spanner Adapter
(1 of 2)
6622-1 S-TEC Corporation
Mineral Wells, TX 76067
Torque adjustment.
Spanner Adapter
(2 of 2)
6624-1 S-TEC Corporation
Mineral Wells, TX 76067
Torque adjustment.
Description P/N or Spec. Supplier Purpose
Tensiometer BT-33-75D Kent-Moore
Warren, MI 48092
800-328-6657
Cable tension
determination.
Rigging Lockout Tool 14905-001 Cirrus Design
Duluth, MN 55811
218-727-2737
Lockout elevator
bellcrank.
3/16” Lockout Pin - Any Source Lockout elevator
bellcrank.
15 Jun 2010
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EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
(d) Serials 22-0498 thru 22-1367: Using rigging lockout tool and pin, lockout elevator empen-
nage bellcrank.
(e) Using tensiometer, verify elevator control cable tension. If elevator control cable tension
falls outside specified tolerance, perform Adjustment/Test - Elevator System Rigging.
(Refer to 27-30) (Refer to 27-30)
(f) On servo capstan, position bridle cable stop-ball between 11 o’clock and 1 o’clock posi-
tions (stop-ball at top of capstan).
(g) Position aft bridle cable and clamp assembly to outboard elevator cable and loosely
secure with bolts and nuts.
(h) Position forward bridle cable and clamp assembly to outboard elevator cable and loosely
secure with bolts and nuts.
Note: Use a ratcheting open-end wrench and socket for tightening bridle cable
clamp assembly to elevator cable.
(i) At forward bridle cable clamp assembly, push clamp assembly forward, tighten clamp to
elevator cable.
Note: While tightening bridle cable clamp to elevator cable, capstan will rotate.
Offset this rotation while adjusting opposite bridle cable tension so that
when specified tension is reached, the bridle cable stop-ball is between 11
o’clock and 1 o’clock positions (stop-ball at top of capstan).
(j) At aft bridle cable clamp assembly, push clamp assembly aft while tightening clamp to ele-
vator cable.
(k) Using the techniques described above, adjust bridle cable tension to 17.0 ± 4.0 lb (7.7 ±
1.8 kg).
(l) Serials 22-0002 thru 22-0497: Remove lockout pin from elevator actuation pulley.
(m) Serials 22-0498 thru 22-1367: Remove rigging lockout pin and tool from elevator empen-
nage bellcrank.
(n) Install access panel RE1. (Refer to 06-00)
(7) Adjustment/Test - Bridle Cable Tension - Serials 22-1368 & subs, 22T-0001 & subs
(a) Acquire necessary tools, equipment, and supplies.
(b) Remove access panel RE1. (Refer to 06-00)
(c) Using rigging lockout tool and pin, lockout elevator empennage bellcrank.
(d) Using tensiometer, verify elevator control cable tension. (See Figure 06-001) If elevator
control cable tension falls outside specified tolerance, perform Adjustment/Test - Elevator
System Rigging. (Refer to 27-30)
(e) On servo capstan, position bridle cable stop-ball at 3 o’clock position (stop-ball at back of
capstan).
Description P/N or Spec. Supplier Purpose
Tensiometer BT-33-75D Kent Moore
Warren, MI 48092
Cable tension
determination.
Rigging Lockout Tool 14905-001 Cirrus Design
Duluth, MN 55811
218-727-2737
Lockout elevator
bellcrank.
3/16” Lockout Pin - Any Source Lockout elevator
bellcrank.
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
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EFFECTIVITY:
Note: Use a ratcheting open-end wrench and socket for tightening bridle cable
clamp assembly to elevator cable.
Install outboard clamp assembly with bolt heads facing inboard and inboard
clamp assembly with bolt heads facing outboard. Align bolt shafts approxi-
mately perpendicular to 0.0 buttock line. Ensure maximum gap of 0.01 inch
(0.25 mm) between aft end of clamp and bridle cable end fitting.
(f) Position short end of bridle cable and clamp assembly to outboard elevator cable and
secure with bolts and nuts. Torque nuts to 55 ± 5 in-lb (6.2 ± 0.6 Nm). With elevator at 0°
deflection, ensure forward end of clamp is a minimum of 5.5 in (14.0 cm) from aft edge of
servo.
(g) Serials 22-1368 thru 22-1601, 22-1603 thru 22-1839, 22-1841 thru 22-1862, 22-1863 &
subs, 22T-0001 & subs w/o Air Conditioning: Position long end of bridle cable and clamp
assembly to inboard elevator cable and loosely secure with bolts and nuts. With elevator at
0° deflection, ensure forward end of clamp assembly is a minimum of 19.0 in (48.2 cm)
from aft edge of servo.
(h) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Route
long end of bridle cable through mounting bracket hole and between pulley and cable
keeper.
(i) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Position
long end of bridle cable and clamp assembly to inboard elevator cable and loosely secure
with bolts and nuts. With elevator at 0° deflection, ensure forward end of clamp assembly
is a minimum of 18.4 in (46.7 cm) from aft edge of servo.
(j) While pushing long end of bridle cable and clamp assembly aft, tighten clamp to elevator
cable. Torque nuts to 55 ± 5 in-lb (6.2 ± 0.6 Nm).
(k) Using tensiometer, verify bridle cable tension forward of bridle cable clamps is set to 25.0
± 5.0 lb (11.3 ± 2.3 kg). If bridle cable tension falls outside specified tolerance, loosen aft
clamp assembly and adjust bridle cable as required to obtain 25.0 ± 5.0 lb (11.3 ± 2.3 kg).
(l) Using tensiometer, verify elevator control cable tension forward of the bridle cable clamp
assemblies. (See Figure 06-001)
(m) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Position
fairleads and cables to fairlead bracket and secure with screws, washers, and nuts.
(n) Remove rigging lockout pin and tool from elevator empennage bellcrank.
(o) Ensure flight control systems operate through full range of travel without binding, obstruc-
tion, or excessive friction.
(p) Ensure bridle cable remains in capstan grooves during full elevator and pitch servo travel
and bridle cable moves freely through cable guards without chafing.
(q) Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ Air Conditioning: Ensure
bridle cable moves freely through mounting bracket without chafing.
(r) Install access panel RE1. (Refer to 06-00)
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Serials 22-0002 thru 22-1367
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
Figure 22-113
Pitch Servo Installation - Serials 22-0002 thru 22-1367 (Sheet 1 of 3)
SR22_MM22_1509B
LEGEND
1. Flapper
2. Plug
3. Screw
4. Washer
5. Capstan
6. Nut
7. Clamp
8. Bridle Cable
9. Bolt
10. Star Washer
11. Capstan Cover
12. Castellated Nut
13. Cotter Pin
14. Cable Guard
15. Tension Washer
16. Servo Motor Cover
17. Bridle Cable Stop Ball
Ensure bridle cable does not rub on cable guards.
NOTE
Before disassembly, mark location of bridle cable.
FUSELAGE BELLY
(REF)
17
SPANNER ADAPTER
12
1
9
9
5
ELEVATOR
CABLE (REF)
2
13
15
4
14
11
3
10
4
8
7
7
6
BRACKET
(REF)
4
3
Serials 22-0002 thru 22-1367.
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 15
Serials 22-1368-1601, 22-1603-1839, 22-1841-1862,
22-1863 & subs, 22T-0001 & subs w/o A/C
EFFECTIVITY:
Figure 22-114
Pitch Servo Install - Serials 22-1368-1601, 22-1603-1839, 22-1841-1862, 22-1863 & subs, 22T-0001 & subs w/o A/C (Sheet 2 of 3)
Serials 22-1368 thru 22-1601, 22-1603 thru 22-1839,
22-1841 thru 22-1862, 22-1863 & subs,
22T-0001 & subs w/o Air Conditioning.
SR22_MM22_2137A
6
7
7
9
16
8
1
5
15
14
12
13
9
4
2
4
3
3
SPANNER ADAPTER
ELEVATOR
CABLE (REF)
BRACKET
(REF)
BULKHEAD FS186
(REF)
LEGEND
1. Flapper
2. Plug
3. Screw
4. Washer
5. Capstan
6. Nut
7. Clamp
8. Bridle Cable
9. Bolt
10. Star Washer
11. Capstan Cover
12. Castellated Nut
13. Cotter Pin
14. Cable Guard
15. Tension Washer
16. Servo Motor Cover
17. Bridle Cable Stop-Ball
18. Bridle Cable End Fitting
Install outboard clamp assembly with bolt heads facing inboard and
inboard clamp assembly with bolt heads facing outboard. Align bolt
shafts approximately perpendicular to 0.0 buttock line.
NOTE
Before disassembly, mark location of bridle cable.
4
10
11
Ensure bridle cable does not rub on cable guards.
0.0 BUTTOCK LINE
(REF)
7
7
18
18
17
15 Jun 2010
22-11
Page 16
Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 &
subs w/ A/C
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
Figure 22-115
Pitch Servo Installation -
Serials 22-1602, 22-1840, 22-1863 & subs, 22T-0001 & subs w/ A/C
(Sheet 3 of 3)
Serials 22-1602, 22-1840, 22-1863 & subs,
22T-0001 & subs w/ Air Conditioning.
13
9
4
23
22
21
4
24
6
4
6
0.01 inches
(0.25 mm)
maximun
2
SR22_MM22_2338
7
16
8
1
5
15
14
12
13
9
4
4
3
3
SPANNER
ADAPTER
ELEVATOR
CABLE (REF)
BRACKET
(REF)
BULKHEAD FS186
(REF)
LEGEND
1. Flapper
2. Plug
3. Screw
4. Washer
5. Capstan
6. Nut
7. Clamp
8. Bridle Cable
9. Bolt
10. Star Washer
11. Capstan Cover
12. Castellated Nut
13. Cotter Pin
14. Cable Guard
15. Tension Washer
16. Servo Motor Cover
17. Bridle Cable Stop-Ball
18. Bridle Cable End Fitting
19.
Fairlead
20.
Bracket
21.
Pulley
22.
Cable Keeper
23.
Spacer
24.
Servo Bracket Plate
Install outboard clamp assembly with bolt heads facing inboard and
inboard clamp assembly with bolt heads facing outboard. Align bolt
shafts approximately perpendicular to 0.0 buttock line.
NOTE
Before disassembly, mark location of bridle cable.
4
10
11
Ensure bridle cable does not rub on cable guards.
0.0 BUTTOCK LINE
(REF)
7
18
17
18.4 inches
(46.7 cm)
5.5 inches
(14.0 cm)
9
9
4
7
3
6
19
20
6
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 17
Serials 22-0435 thru 22-1306 after SB 2X-22-03, 1307
& subs, 22T-0001 & subs with optional installation
EFFECTIVITY:
G. Flight Director System - Serials 22-0435 thru 22-1306 after SB 2X-22-03, 1307 & subs, 22T-0001
& subs with optional installation (See Figure 22-116)
(1) Removal - Flight Director Switch Assembly
(a) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(b) Pull ESSENTIAL and NON-ESSENTIAL AVIONICS circuit breakers.
(c) Serials w/ Avidyne Avionics: Remove MFD. (Refer to 31-60)
(d) Serials w/ Perspective Avionics: Remove MFD. (Refer to 31-60)
(e) Remove glareshield. (Refer to 25-10)
(f) Serials w/ Avidyne Avionics: Serials 22-Remove PFD. (Refer to 31-60)
(g) Serials w/ Perspective Avionics: Serials 22-Remove PFD. (Refer to 31-60)
Note: To facilitate reinstallation, label wiring to ensure connectors are reattached
with the correct switches.
(h) Rotate locking screws on back of switch assembly counter-clockwise to disconnect switch
assembly from connector. Repeat for other switch assembly.
Note: To facilitate reinstallation, label push button to ensure switches are reas-
sembled with the correct push button.
(i) Remove push button from switch assembly. Repeat for other switch assembly.
(j) Rotate locking screws inside front of switch assembly counter-clockwise to disassemble
mounting sleeve, spacers, and seals from switch assembly. Repeat for other switch
assembly.
(2) Installation - Flight Director Switch Assembly
(a) Orient switch assembly so section labeled “TOP” is facing up and insert switch assembly
through lower section of instrument panel cut-out. Repeat for other switch assembly
through upper section of instrument panel cut-out.
Note: It may be necessary to discard one seal and spacer if attaching parts secur-
ing switch to instrument panel are too tight for cam engagement.
(b) Slide seals, spacers, and mounting sleeve onto switch assembly. Repeat for other switch
assembly.
(c) Position switches so that switch flanges are aligned with each other and installation area.
(d) Secure switch to instrument panel by rotating locking screws inside front of switch assem-
bly clockwise. Torque to 8 - 12 oz-in (576 - 864 gm-cm). Repeat on other switch assembly.
(e) Install push buttons to front of switch assemblies.
(f) Connect wiring harness connectors to switch assemblies.
(g) Secure switch to connector by rotating locking screws on back of connector assembly
clockwise. Torque to 8 - 12 oz-in (576 - 864 gm-cm). Repeat on other switch assembly.
(h) Serials w/ Avidyne Avionics: Install PFD. (Refer to 31-60)
(i) Serials w/ Perspective Avionics: Install PFD. (Refer to 31-60)
(j) Install glareshield. (Refer to 25-10)
(k) Serials w/ Avidyne Avionics: Install MFD. (Refer to 31-60)
(l) Serials w/ Perspective Avionics: Install MFD. (Refer to 31-60)
(m) Reset ESSENTIAL and NON-ESSENTIAL AVIONICS circuit breakers.
(n) Serials w/ Avidyne Avionics: Perform Operational Test - Flight Director (Avidyne). (Refer to
22-11)
(o) Serials w/ Perspective Avionics: Perform Operational Test - Flight Director (Perspective
Avionics and System 55X). (Refer to 22-11)
15 Jun 2010
22-11
Page 18
Serials 22-0435 thru 22-1306 after SB 2X-22-03, 1307
& subs, 22T-0001 & subs with optional installation
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
(3) Operational Test - Flight Director (Avidyne)
(a) Pull STARTER RELAY and FUEL PUMP RELAY circuit breakers.
(b) Connect 28 ±1 VDC external power to external power receptacle.
(c) Set BAT 1, BAT 2, and AVIONICS switches to ON positions.
(d) On Flight Guidance Programmer/Computer, press [HDG].
1
On PFD, verify “HDG” is indicated and no command bars appear.
2
At lower Flight Director switch, verify [AP ON] push button is lit.
(e) On Flight Guidance Programmer/Computer, press [ALT].
1
On PFD, verify “ALT” is indicated and solid magenta command bars (autopilot cou-
pled) appear.
(f) Verify flight control functions.
1
On PFD, press [HDG Bug].
2
Rotate right knob counter-clockwise to position heading bug left.
Command bars should bank left, and yoke should rotate left.
3
Rotate right knob clockwise to position heading bug right.
Command bars should bank right, and yoke should rotate right.
4
Adjust right knob to center heading bug.
Command bars should return to center at wings level, and yoke should have little to
no movement.
5
Press [VSI Bug].
6
Adjust right knob to position VSI bug to "+1000".
7
On Flight Guidance Programmer/Computer, press [VS].
On PFD, “VS” is indicated and command bars should climb. Yoke should move aft.
8
On PFD, adjust right knob to position VSI bug to “-1000”.
Command bars should descend, and yoke should move forward.
(g) At upper Flight Director switch, press [AP OFF FD ON] push button.
1
Verify autopilot disconnect tone (two beeps) is heard.
2
On PFD, verify command bars turn green (autopilot uncoupled).
3
At upper Flight Director switch, verify [AP OFF FD ON] push button is lit.
(h) Repeat flight control functions verification.
1
Verify command bars respond, but yoke does not move.
(i) On yoke, press autopilot disconnect switch to turn off autopilot.
1
On PFD, verify command bars disappear.
2
At upper Flight Director switch, verify [AP OFF FD ON] push button remains lit.
(j) At lower Flight Director switch, press [AP ON] push button.
1
At upper Flight Director switch, verify [AP OFF FD ON] push button is not lit.
2
At lower Flight Director switch, verify [AP ON] push button is not lit.
(k) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(l) Disconnect 28 ±1 VDC external power from external power receptacle.
(m) Reset STARTER RELAY and FUEL PUMP RELAY circuit breakers.
(4) Operational Test - Flight Director (Perspective Avionics and System 55X)
(a) Pull STARTER RELAY and FUEL PUMP RELAY circuit breakers.
(b) Connect 28 ±1 VDC external power to external power receptacle.
(c) Set BAT 1, BAT 2, and AVIONICS switches to ON positions.
(d) On Flight Guidance Programmer/Computer, press [HDG].
1
On PFD, verify “HDG” is indicated and no command bars appear.
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
22-11
Page 19
Serials 22-0435 thru 22-1306 after SB 2X-22-03, 1307
& subs, 22T-0001 & subs with optional installation
EFFECTIVITY:
2 At lower Flight Director switch, verify [AP ON] push button is lit.
(e) On Flight Guidance Programmer/Computer, press [ALT].
1
On PFD, verify “ALT” is indicated and solid magenta command bars (autopilot cou-
pled) appear.
(f) Verify flight control functions.
1
On FMS Controller, rotate HDG knob counter-clockwise to position heading bug left.
Command bars should bank left, and yoke should rotate left.
2
Rotate HDG knob clockwise to position heading bug right.
Command bars should bank right, and yoke should rotate right.
3
Press HDG knob to center heading bug.
Command bars should return to center at wings level, and yoke should have little to
no movement.
4
On Flight Guidance Programmer/Computer, press [VS].
5
Adjust right knob to position VSI bug to "+100".
On PFD, “VS” is indicated and command bars should climb. Yoke should move aft.
6
On Flight Guidance Programmer/Computer, adjust right knob to position VSI bug to
“-100”.
Command bars should descend, and yoke should move forward.
(g) At upper Flight Director switch, press [AP OFF FD ON] push button.
1
Verify autopilot disconnect tone (two beeps) is heard.
2
On PFD, verify command bars turn green (autopilot uncoupled).
3
At upper Flight Director switch, verify [AP OFF FD ON] push button is lit.
(h) Repeat flight control functions verification.
1
Verify command bars respond, but yoke does not move.
(i) On yoke, press autopilot disconnect switch to turn off autopilot.
1
On PFD, verify command bars disappear.
2
At upper Flight Director switch, verify [AP OFF FD ON] push button remains lit.
(j) At lower Flight Director switch, press [AP ON] push button.
1
At upper Flight Director switch, verify [AP OFF FD ON] push button is not lit.
2
At lower Flight Director switch, verify [AP ON] push button is not lit.
(k) Set BAT 1, BAT 2, and AVIONICS switches to OFF positions.
(l) Disconnect 28 ±1 VDC external power from external power receptacle.
(m) Reset STARTER RELAY and FUEL PUMP RELAY circuit breakers.
15 Jun 2010
22-11
Page 20
Serials 22-0435 - 1306 after SB 2X-22-03, 1307 & subs
w/ Avidyne Avionics
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODELS SR22 AND SR22T
15 Jun 2010
Figure 22-116
Flight Director - Serials 22-0435 - 1306 after SB 2X-22-03, 1307 & subs w/ Avidyne Avionics (Sheet 1 of 2)
SR22_MM22_2066A
LEGEND
1. Pushbutton
2. Switch
3. Seal
4. Spacer
5. Mounting Sleeve
6. Connector
7. Screw
8. Relay
9. Washer
10. Nut
NOTE
To release/engage cams, rotate locking
screws clockwise/counter-clockwise.
2
57
41
8
10
6
3
12
11
9
NC
NO
C
INSTRUMENT PANEL
(REF)
7
6
5
4
4
3
3
2
1
8
9
10
TO RADIO MODULE
(REF)
WIRING HARNESS
(REF)
To facilitate switch installation, discard one
seal and spacer if required.
Serials 22-0435 thru 22-1306 after SB 2X-22-03,
Serials 22-1307 & subs w/ Avidyne Avionics.
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Cirrus System 55X Autopilot Airplane Maintenance Manual

Brand
Cirrus
Model
System 55X Autopilot
Type
Airplane Maintenance Manual
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