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Meggitt S-TEC Fifty Five X Pilot Operating Handbook

Autopilot for cirrus sr20/22 aircraft
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Pilot's Operating Handbook
System Fifty Five X Autopilot
Cirrus SR20/22 Aircraft
SR20: SN 1337 and Above
SR22: SN 0435 and Above
F
F
X
IFTY IVE
F
G
R
C
HDG
NAV
APR
REV TRIM
ALT GS VS
A
P
D
W
I
S
Y
S
L
S
VS x 100

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Summary of Contents for Meggitt S-TEC Fifty Five X

  • Page 1 Pilot’s Operating Handbook System Fifty Five X Autopilot Cirrus SR20/22 Aircraft SR20: SN 1337 and Above SR22: SN 0435 and Above IFTY IVE REV TRIM ALT GS VS VS x 100...
  • Page 2 S–TEC * Asterisk indicates pages changed, added, or deleted by List of Effective Pages current revision. Page No. Issue * 3-33 Jul 19, 06 Retain this record in front of handbook. Upon receipt of a Record of Revisions revision, insert changes and complete table below. Revision Number Revision Date Insertion Date/Initials...
  • Page 3 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 4: Table Of Contents

    S–TEC Table of Contents Sec. Overview......................1–1 Document Organization..............1–3 Purpose....................1–3 General Control Theory..............1–3 Modes of Operation................1–4 1.4.1 Roll Axis Control..............1–4 1.4.2 Pitch Axis Control...............1–4 Block Diagram..................1–4 Pre-Flight Procedures...................2–1 Power-Up Test..................2–3 Pre-Flight Test..................2–7 In-Flight Procedures..................3–1 Normal Operating Procedures............3–3 3.1.1 Heading (HDG) Mode............3–3 3.1.2 Navigation (NAV) Mode............3–4 3.1.2.1 Pilot Selectable Intercept Angle......3–7...
  • Page 5 S–TEC 3.1.6 Altitude Pre-Select Function..........3–14 3.1.7 Autotrim (SR22 Only)............3–16 3.1.8 Manual Electric Trim (SR22 Only)........3–16 Precision Approach Procedures.............3–18 3.2.1 Straight-In ILS Approach............3–18 3.2.2 ILS Approach with Procedure Turn........3–22 Non-Precision Approach Procedures..........3–22 3.3.1 Straight-In Back Course Approach........3–22 3.3.2 Back Course Approach with Procedure Turn....3–24 3.3.3 Straight-In LOC Approach..........3–26 3.3.4...
  • Page 6 S–TEC List of Figures Fig. 1–1 System Fifty Five X Block Diagram..............1–5 2–1 AP Display, Power-Up Annunciations............2–4 2–2 AP Display, Software Revision Number.............2–4 2–3 PFD Display, INITIAL AHRS ALIGNMENT Message.........2–4 2–4 AP Display, RDY Annunciation..............2–5 2–5 P FD Display, AP RDY Annunciation............2–5 2–6 AP Display, FAIL Annunciation..............2–6 2–7...
  • Page 7 S–TEC 3–9 PFD Display, HDG Mode Engaged, NAV Mode Armed......3–8 3–10 AP Display, GPSS Mode Engaged..............3–8 3–11 PFD Display, GPSS Mode Engaged............3–9 3–12 AP Display, HDG Mode Engaged, GPSS Mode Armed......3–10 3–13 PFD Display, HDG Mode Engaged, GPSS Mode Armed......3–10 3–14 AP Display, HDG and ALT HOLD Modes Engaged.........3–11 3–15 PFD Display, HDG and ALT HOLD Modes Engaged.......3–11 3–16 AP Display, HDG and VS Modes Engaged..........3–13...
  • Page 8 S–TEC 3–33 ....3–24 AP Display, APR Mode Engaged, Track LOC Back Course Outbound 3–34 ....3–24 AP Display, APR Mode Engaged, Track LOC Back Course Inbound 3–35 Back Course Approach with Procedure Turn..........3–25 3–36 ....3–26 AP Display, APR Mode Engaged, Track LOC Front Course Inbound 3–37 Straight-In LOC Approach................3–26 3–38 ....3–27...
  • Page 9 S–TEC List of Tables Table 2–1 Power-Up Test....................2–3 2–2 Pre-Flight Test....................2–7 viii 1st Ed. Jul 15, 06...

  • Page 10: Overview

    S–TEC SECTION 1 OVERVIEW 1st Ed. Jul 15, 06...
  • Page 11 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 12: Document Organization

    S–TEC 1.1 Document Organization Section 1 Overview Section 2 Pre-Flight Procedures Section 3 In-Flight Procedures Section 4 Operating Parameters Section 5 Glossary 1.2 Purpose This Pilot's Operating Handbook (POH) provides Pre-Flight and In-Flight operating procedures for the S-TEC System Fifty Five X Autopilot (AP), installed in the Cirrus SR20/22 aircraft (A/C), and integrated with the Avidyne Primary Flight Display (PFD), as well as the Garmin GNS 430 Navigation Receiver.

  • Page 13: Modes Of Operation

    S–TEC 1.4 Modes of Operation 1.4.1 Roll Axis Control Heading (HDG) Mode Used to Turn onto a Selected Heading and Hold it Navigation (NAV) Mode Used to Intercept and Track a VOR or GPS Course Approach (APR) Mode Used to Intercept and Track a LOC Front Course Inbound Reverse (REV) Mode Used to Intercept and Track a LOC Back Course Inbound Global Positioning System Steering (GPSS) Mode...

  • Page 14: System Fifty Five X Block Diagram

    S–TEC Fig. 1-1. System Fifty Five X Block Diagram 1st Ed. Jul 15, 06...
  • Page 15 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 16: Pre-Flight Procedures

    S–TEC SECTION 2 PRE-FLIGHT PROCEDURES 1st Ed. Jul 15, 06...
  • Page 17 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 18: Power-Up Test

    S–TEC 2.1 Power-Up Test Perform the actions shown in Table 2-1. For each action, verify the corresponding response where applicable. Table 2-1. Power-Up Test ACTION RESPONSE 1. Set Battery Master Switch to ON All annunciations appear on AP position. display as shown in Fig. 2-1, and then extinguish.

  • Page 19: Ap Display, Power-Up Annunciations

    S–TEC Fig. 2-1. AP Display, Power-Up Annunciations Fig. 2-2. AP Display, Software Revision Number Fig. 2-3. PFD Display, INITIAL AHRS ALIGNMENT Message 1st Ed. Jul 15, 06...

  • Page 20: Ap Display, Rdy Annunciation

    S–TEC Fig. 2-4. AP Display, RDY Annunciation Fig. 2-5. PFD Display, AP RDY Annunciation 1st Ed. Jul 15, 06...

  • Page 21: Ap Display, Fail Annunciation

    S–TEC Fig. 2-6. AP Display, FAIL Annunciation Fig. 2-7. PFD Display, AP FAIL Annunciation 1st Ed. Jul 15, 06...

  • Page 22: Pre-Flight Test

    S–TEC 2.2 Pre-Flight Test Prior to takeoff and with engine running, perform the actions shown in Table 2-2. For each action, verify the corresponding response where applicable. All actions pertaining to mode selector switches apply to the autopilot, and not the PFD. Table 2-2.

  • Page 23: Ap Display, Hdg Mode Engaged (Pre-Flight)

    S–TEC Fig. 2-8. AP Display, HDG Mode Engaged (Pre-Flight) Fig. 2-9. PFD Display, HDG Mode Engaged (Pre-Flight) 1st Ed. Jul 15, 06...

  • Page 24: Ap Display, Hdg And Alt Hold Modes Engaged (Pre-Flight)

    S–TEC Fig. 2-10. AP Display, HDG and ALT HOLD Modes Engaged (Pre-Flight) Fig. 2-11. PFD Display, HDG and ALT HOLD Modes Engaged (Pre-Flight) 1st Ed. Jul 15, 06...
  • Page 25 S–TEC Table 2-2. Pre-Flight Test (continued from page 2-7) ACTION RESPONSE 9. Attempt movement of A/C Control Control Sidestick’s reduced Sidestick forward and aft (SR22 freedom of movement indicates that Only). Pitch Servo (SR22 only) is engaged. Pitch Servo can be overridden. If not, disconnect autopilot and do not use.

  • Page 26: Ap Display, Hdg And Vs Modes Engaged (Pre-Flight)

    S–TEC Fig. 2-12. AP Display, HDG and VS Modes Engaged (Pre-Flight) Fig. 2-13. PFD Display, HDG and VS Modes Engaged (Pre-Flight) 1st Ed. Jul 15, 06 2-11...
  • Page 27 S–TEC Table 2-2. Pre-Flight Test (continued from page 2-10) ACTION RESPONSE 18. Press Remote AP OFF / FD ON Switch annunciation Switch. extinguished. AP OFF / FD ON Switch annunciation appears and is amber. FD annunciation appears on PFD display in upper right-hand corner, and is green.
  • Page 28 S–TEC Table 2-2. Pre-Flight Test (continued from page 2-12) ACTION RESPONSE 27. Release Manual Electric Trim A/C stops trimming. Switch (SR22 only). 28. Press aft and maintain pressure A/C trims nose up. on Manual Electric Trim Switch (SR22 only). 29. Release Manual Electric Trim A/C stops trimming.
  • Page 29 S–TEC Page Intentionally Blank 2-14 1st Ed. Jul 15, 06...

  • Page 30: In-Flight Procedures

    S–TEC SECTION 3 IN-FLIGHT PROCEDURES 1st Ed. Jul 15, 06...
  • Page 31 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 32: Normal Operating Procedures

    S–TEC 3.1 Normal Operating Procedures 3.1.1 Heading (HDG) Mode Set the PFD Hdg Bug to the desired heading on the compass card, and press the HDG mode selector switch to engage the heading mode. HDG annunciation will appear as shown in Fig. 3-1. The autopilot will turn the aircraft onto the selected heading and hold it.

  • Page 33: Navigation (Nav) Mode

    S–TEC 3.1.2 Navigation (NAV) Mode Select a VOR frequency on the Navigation Receiver. Set the PFD CRS Pointer to the desired course on the compass card, and press the NAV mode selector switch to engage the navigation mode. The NAV annunciation will appear as shown in Fig.

  • Page 34: Pfd Display, Nav Mode Engaged, A/C Turning Onto Course

    S–TEC As the aircraft approaches the selected course, the autopilot will sense the corresponding rate at which the Left/Right Needle approaches center (closure rate), and gradually shallow the intercept angle as the autopilot turns the aircraft onto the course. A typical view of the PFD during this stage of the intercept sequence is shown in Fig.

  • Page 35: Pfd Display, Nav Mode Engaged, A/C Tracking Course

    S–TEC Thirty seconds after course capture, the autopilot will establish the required crosswind correction angle. Seventy five seconds after course capture, a third step reduction in autopilot gain occurs to limit the aircraft's turn rate to 15% of a standard rate turn. In addition, the sensitivity to closure rate is reduced once more.

  • Page 36: Pilot Selectable Intercept Angle

    S–TEC The NAV annunciation will flash whenever the CDI needle deflection exceeds 50%, or the NAV Flag is in view. In the latter event, the FAIL annunciation will also appear. While tracking in the LOW GAIN condition and within 50% CDI needle deflection, to track in the higher authority INTERMEDIATE GAIN condition, press the APR mode selector switch to engage the approach mode.

  • Page 37: Global Positioning System Steering (Gpss) Mode

    S–TEC Fig. 3-9. PFD Display, HDG Mode Engaged, NAV Mode Armed 3.1.3 Global Positioning System Steering (GPSS) Mode The GPSS mode should be used anytime the selected navigation source is the Global Positioning System (GPS). Engagement of the GPSS mode requires pressing the NAV mode selector switch twice, unless the NAV mode is engaged.

  • Page 38: Pilot Selectable Intercept Angle

    S–TEC The autopilot will laterally steer the aircraft along a predefined course programmed into the Navigation Receiver. During the GPSS mode of operation, the autopilot will not accept any course error input from the PFD CRS Pointer. A typical view of the PFD with the GPSS mode engaged is shown in Fig. 3-11. Note: In the GPSS mode, the autopilot will expand the aircraft's turn rate limit to 130% of a standard rate turn.

  • Page 39: Ap Display, Hdg Mode Engaged, Gpss Mode Armed

    S–TEC Fig. 3-12. AP Display, HDG Mode Engaged, GPSS Mode Armed The autopilot will establish the aircraft on the selected intercept angle (heading). A typical view of the PFD during this stage of the intercept sequence is shown in Fig. 3-13. The autopilot will hold this heading until the autopilot must turn the aircraft onto the course segment to prevent overshoot.

  • Page 40: Altitude Hold (Alt) Mode

    S–TEC 3.1.4 Altitude Hold (ALT) Mode The altitude hold mode can only be engaged if a roll mode (HDG, NAV, APR, GPSS, REV) is engaged. With a roll mode engaged and the aircraft at the desired altitude, press the ALT mode selector switch to engage the altitude hold mode.

  • Page 41: Vertical Speed (Vs) Mode

    S–TEC 3.1.5 Vertical Speed (VS) Mode Caution: The vertical speed mode may be used for establishing and maintaining a PILOT selected vertical speed. The autopilot receives no airspeed information; therefore, it is the responsibility of the pilot to manage the vertical speed selection within the operating limits of the aircraft's capabilities.

  • Page 42: Ap Display, Hdg And Vs Modes Engaged

    S–TEC Fig. 3-16. AP Display, HDG and VS Modes Engaged Fig. 3-17. PFD Display, HDG and VS Modes Engaged Fig. 3-18. AP Display, HDG and VS Modes Engaged, PFD Failure 1st Ed. Jul 15, 06 3-13...

  • Page 43: Altitude Pre-Select Function

    S–TEC 3.1.6 Altitude Pre-Select Function The Altitude Pre-Select Function allows the pilot to pre-select a target altitude and the vertical speed (if within the aircraft's capabilities) at which the aircraft will climb or descend, until that altitude is captured. Engage a roll mode (HDG, NAV, APR, GPSS, REV). Set the PFD Alt Bug to the target altitude and the PFD VSI Bug to an acceptable vertical speed.

  • Page 44: Ap Display, Hdg And Vs Modes Engaged, Alt Hold Mode Armed

    S–TEC Fig. 3-19. AP Display, HDG and VS Modes Engaged, ALT HOLD Mode Armed Fig. 3-20. PFD Display, HDG and VS Modes Engaged, ALT HOLD Mode Armed Fig. 3-21. AP Display, HDG and ALT HOLD Modes Engaged 1st Ed. Jul 15, 06 3-15...

  • Page 45: Autotrim (Sr22 Only)

    S–TEC 3.1.7 Autotrim (SR22 Only) When the Remote AP ON Switch has been selected (reference section 3.4.1), and both a roll mode (HDG, NAV, APR, REV, GPSS) and a pitch mode (ALT, VS, GS) are engaged, the autopilot will provide an annunciation whenever it is automatically trimming the aircraft.
  • Page 46 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06 3-17...

  • Page 47: Precision Approach Procedures

    S–TEC 3.2 Precision Approach Procedures 3.2.1 Straight-In ILS Approach Execute a straight-in intercept and track of the FRONT INBOUND LOC course (reference section 3.3.3), while holding the approach altitude. The NAV, APR, and ALT annunciations will appear as shown in Fig. 3-23. A typical view of the PFD during this stage of the ILS approach sequence is shown in Fig.

  • Page 48: Ap Display, Nav, Apr, And Alt Hold Modes Engaged

    S–TEC The GS annunciation will flash whenever the Glideslope Deviation Indication (GDI) needle deflection exceeds 50%, or the GS Flag is in view. In the latter event, the FAIL annunciation will also appear. At the Decision Height (DH) or Missed Approach Point (MAP), disconnect the autopilot to execute either a manual landing or go-around, respectively.

  • Page 49: Ap Display, Nav, Apr And Alt Hold Modes Engaged, Gs Mode Armed

    S–TEC Fig. 3-25. AP Display, NAV, APR and ALT HOLD Modes Engaged, GS Mode Armed Fig. 3-26. PFD Display, NAV, APR, and ALT HOLD Modes Engaged, GS Mode Armed 3-20 1st Ed. Jul 15, 06...

  • Page 50: Straight-In Ils Approach

    S–TEC Fig. 3-27. AP Display, NAV, APR, and GS Modes Engaged Fig. 3-28. PFD Display, NAV, APR, and GS Modes Engaged Fig. 3-29. Straight-In ILS Approach 1st Ed. Jul 15, 06 3-21...

  • Page 51: Ils Approach With Procedure Turn

    S–TEC 3.2.2 ILS Approach with Procedure Turn Execute a procedure turn intercept and track of the FRONT INBOUND LOC course (reference section 3.3.5) above the approach altitude, just until the aircraft is established on the FRONT INBOUND PROCEDURE TURN heading, with the HDG mode still engaged. Set the PFD VSI Bug to the desired vertical descent speed, and press the VS mode selector switch to engage the VS mode.

  • Page 52: Straight-In Back Course Approach

    S–TEC Fig. 3-31. AP Display, APR Mode Engaged, Back Course Back Course 265° 085° a. Select LOC frequency. 310° b. Set PFD CRS Pointer to FRONT INBOUND LOC course. c. Press REV mode selector switch to engage APR mode. d. Intercept and track BACK INBOUND LOC course. Fig.

  • Page 53: Back Course Approach With Procedure Turn

    S–TEC 3.3.2 Back Course Approach with Procedure Turn Select the LOC frequency on the Navigation Receiver. Set the PFD CRS Pointer to the FRONT INBOUND LOC course on the compass card. Press the NAV mode selector switch to engage the APR mode. NAV and APR annunciations will appear as shown in Fig.

  • Page 54: Back Course Approach With Procedure Turn

    S–TEC Back Course 085° 265° 310° 130° 1. a. Select LOC frequency. b. Set PFD CRS Pointer to FRONT INBOUND LOC course. c. Press NAV mode selector switch to engage APR mode. d. Intercept and track BACK OUTBOUND LOC course. 2.

  • Page 55: Straight-In Loc Approach

    S–TEC 3.3.3 Straight-In LOC Approach Select the LOC frequency on the Navigation Receiver. Set the PFD CRS Pointer to the FRONT INBOUND LOC course on the compass card. Press the NAV mode selector switch to engage the APR mode. NAV and APR annunciations will appear as shown in Fig.

  • Page 56: Straight-In Vor Approach

    S–TEC 3.3.4 Straight-In VOR Approach Select the VOR frequency on the Navigation Receiver. Set the PFD CRS Pointer to the FRONT INBOUND VOR course on the compass card. Press the APR mode selector switch to engage the APR mode. NAV and APR annunciations will appear as shown in Fig.

  • Page 57: Loc Approach With Procedure Turn

    S–TEC 3.3.5 LOC Approach with Procedure Turn Select the LOC frequency on the Navigation Receiver. Set the PFD CRS Pointer to the FRONT INBOUND LOC course on the compass card. Press the REV mode selector switch to engage the APR mode. REV and APR annunciations will appear as shown in Fig.

  • Page 58: Loc Approach With Procedure Turn

    S–TEC 130° 310° 1. a. Select LOC frequency. b. Set PFD CRS Pointer to FRONT INBOUND LOC course. c. Press REV mode selector switch to engage APR mode. d. Intercept and track FRONT OUTBOUND LOC course. 2. a. At the appropriate time, set PFD Hdg Bug to FRONT OUTBOUND PROCEDURE TURN heading.

  • Page 59: Vor Approach With Procedure Turn

    S–TEC 3.3.6 VOR Approach with Procedure Turn Select the VOR frequency on the Navigation Receiver. Set the PFD CRS Pointer to the FRONT INBOUND VOR course on the compass card. Press the REV mode selector switch to engage the REV mode. The REV annunciation will appear as shown in Fig.

  • Page 60: Vor Approach With Procedure Turn

    S–TEC 130° 310° 1. a. Select VOR frequency. b. Set PFD CRS Pointer to FRONT INBOUND VOR course. c. Press REV mode selector switch to engage REV mode. d. Intercept and track FRONT OUTBOUND VOR course. 2. a. At the appropriate time, set PFD Hdg Bug to FRONT OUTBOUND PROCEDURE TURN heading.

  • Page 61: Gpss Approach

    S–TEC 3.3.7 GPSS Approach Press the NAV mode selector switch twice to engage the GPSS mode (reference section 3.1.3). The autopilot will laterally steer the aircraft along a predefined approach, which has been programmed into the Navigation Receiver. To control the assigned altitudes and rates of descent, use the Altitude Pre-Select Function (reference section 3.1.6).

  • Page 62: Fd Mode

    S–TEC 3.4.2 FD Mode Press the Remote AP OFF / FD ON Switch, and engage a roll and pitch mode to enable the FD mode. In this case, the Steering Command Bars are green. The pilot must steer the aircraft toward the Steering Command Bars, until the ARS is tucked into them.
  • Page 63 S–TEC Page Intentionally Blank 3-34 1st Ed. Jul 15, 06...

  • Page 64: Operating Parameters

    S–TEC SECTION 4 OPERATING PARAMETERS 1st Ed. Jul 15, 06...
  • Page 65 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

  • Page 66: Roll Axis Limits

    S–TEC 4.1 Roll Axis Limits Turn Rate 90% Standard Rate Turn (HDG, NAV, APR, REV Modes) 130% Standard Rate Turn (GPSS Mode) 4.2 Pitch Axis Limits Altitude 32,000 FT Vertical Force Due to Acceleration 0.60 g Vertical Speed 1600 FPM Climbing or Descending Modes A pitch mode (ALT, VS, GS) can only be engaged after a roll mode (HDG, NAV, APR, REV, GPSS) has been engaged.
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  • Page 68: Glossary

    S–TEC SECTION 5 GLOSSARY 1st Ed. Jul 15, 06...
  • Page 69 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...
  • Page 70 S–TEC Term Meaning Aircraft AHRS Attitude and Heading Reference System Altitude Autopilot Approach Aircraft Reference Symbol Airspeed Indication Course Deviation Indication Clockwise Counter–Clockwise Course Decision Height DISC Disconnect Federal Aviation Administration Flight Director Feet–per–Minute Feet Glideslope Deviation Indication Global Positioning System GPSS Global Positioning System Steering Glideslope...
  • Page 71 S–TEC Page Intentionally Blank 1st Ed. Jul 15, 06...

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