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Genesys S-TEC 3100 Pilot's Manual

Digital and analog flight control system
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Precise Performance.
Proven Experience.
Personalized Attention.
S-TEC 3100
DIGITAL AND ANALOG
FLIGHT CONTROL SYSTEM
PILOT GUIDE

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Summary of Contents for Genesys S-TEC 3100

  • Page 1 S-TEC 3100 DIGITAL AND ANALOG FLIGHT CONTROL SYSTEM PILOT GUIDE Precise Performance. Proven Experience. Personalized Attention.
  • Page 2 No part of this document may be reproduced in any form, or by any means, without prior written consent of Genesys Aerosystems. Printed in the United States of America. Genesys Aerosystems and S-TEC logo are registered trademarks of Genesys Aerosystems. All other brand names and trademarks are the property of their respective holders.
  • Page 3 S-TEC 3100 Digital and Analog Revision Record Retain this record in front of guide. Revision Notes/Pages changed, added, or deleted Revision Date Number by current revision 1st Ed. Feb 2018 Rev A Nov 2018 2nd Ed. Aug 2019 3rd Ed.

  • Page 4: Table Of Contents

    1.3.5. Optional Yaw Damper (YD) ............1-2 1.4. Autopilot Modes ..................1-2 1.5. System Components .................. 1-3 1.5.1. S-TEC 3100 Flight Guidance Computer (FGC) ......1-3 1.5.2. Aircraft Configuration ..............1-4 1.5.3. Interface Configuration ..............1-4 1.5.4. Servo Assemblies ................1-4 1.5.5.
  • Page 5 3.8.4. Altitude Hold (ALT HOLD) Mode ..........3-16 3.8.5. Altitude Preselect ................3-16 3.8.5.1. No Altitude Preselect (Manual Altitude Capture) ... 3-17 3.8.5.2. S-TEC 3100 Internal Altitude Preselect ......3-17 3.8.5.3. S-TEC ST 360 Altitude Selector/Alerter ......3-18 3.8.5.4. EFIS Preselect ..............3-18 3.8.6.

  • Page 6: Section 1 Overview

    Section 1 Overview 1.1. INTRODUCTION This pilot guide provides pre-flight and in-flight operating procedures for the S-TEC 3100 autopilot (3100) for both digital and analog interfaced systems. NOTE: The 3100 is designed to assist pilots with cockpit workload management. The ability of the 3100 to provide optimum assistance and performance is directly proportional to the pilot’s knowledge of its operating procedures.

  • Page 7: Indicated Airspeed Mode (Ias) And Envelope Protection Limitations

    In these cases, the yaw damper button is blank and the YD LED does not illuminate under any circumstances. Figure 1-1: S-TEC 3100 Without Optional Yaw Damper 1.4. AUTOPILOT MODES Autopilot (AP) Mode: Engages autopilot servos. Flight Director (FD) Mode: Drives steering command bars (compatible flight director or electronic flight instrument system (EFIS) required).

  • Page 8: System Components

    (pitch, roll, yaw, and pitch trim). Figure 1-2: S-TEC 3100 Flight Guidance Computer (FGC) The FGC requires navigational and target data to provide the correct servo drive signals. Mode selection may be controlled through the front panel.

  • Page 9: Aircraft Configuration

    (PWM) signal. The pulse width modulation allows the FGC greater control over the speed of servo during fluctuations in aircraft voltage. Figure 1-3: S-TEC 3100 Servos 1.5.5. Sandia Air Data Computer The Sandia SAC7-35 is installed on non-EFIS installations that do not have a digital source of air data.

  • Page 10: Interfaced Avionics

    For dual GPS navigators, a GPS 1/2 selector switch is required. See § 1.5.6 for function details. Flight director interface box (ST-670/ST-645) required to display flight director command bars on the EFIS. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 11: Advanced Arinc Autopilot Unlock

    Installations that do not provide baro-corrected data or have an ST- 360 installed do not have altitude preselect and need to perform a manual altitude capture for climbs and descents (§ 3.8.5.1). S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 12: Display Legend (Without Vnav)

    Altitude Selector (SELECT) knobs Up/Down (UP/DN) Modifier switch Altitude Selector/Alerter annunciation Engaged Pitch Mode annunciation Armed Pitch Mode annunciation Engaged Roll Mode annunciation Armed Roll Mode annunciation Light Emitting Diodes (LEDs) S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 13: Display Legend (With Vnav)

    Altitude Selector (SELECT) knobs - Push and hold to access Menu Mode (See § 3.9.6) Up/Down (UP/DN) Modifier switch Altitude Selector/Alerter annunciation Engaged Pitch Mode annunciation Armed Pitch Mode annunciation Engaged Roll Mode annunciation Armed Roll Mode annunciation Light Emitting Diodes (LEDs) S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 14: Section 2 Pre-Flight Procedures

    If the on-board attitude sensor fails to align, ATTITUDE FAIL appears. If initial alignment is not valid after configured start-up time data becomes invalid following alignment, AP FAIL appears. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 15: Pre-Flight Checks

    CWS, and AP DISC/TRIM INTR are operating correctly. Trim moves while preforming pre-flight checks and must be returned to take off position after completing the pre-flight check. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 16: Section 3 In-Flight Procedures

    AP mode also disconnects under the following circumstances: Push the manual electric trim switch. When the 3100 detects a fault in the system or an attitude miscompare. When GA/TOGA switch is pressed. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 17: Autopilot (Ap) Operation

    3100 to avoid aggressive banks or climbs. 3.5. YAW DAMPER (YD) OPERATION CAUTION: YD mode should always be disengaged prior to takeoff and landing. NOTE: Not applicable to aircraft without optional yaw damper installed. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 18: Envelope Protection

    Excessive Bank alert activates if the aircraft’s roll attitude exceeds 60 degrees, which triggers an audible alarm followed by the “Attitude, Attitude” voice alert. Alerts continue until the aircraft roll attitude is reduced below 60 degrees. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 19: Passive Envelope Protection On Approach

    “Overspeed, Overspeed” voice alert. The 3100 automatically commands the aircraft to pitch up to decrease airspeed to the overspeed recovery limit. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 20: Approach Envelope Transition

    LED on the panel labeled “AP ICE SPEED.” All underspeed and overspeed limits are stated within the AFMS. NOTE: FIKI approved aircraft without the “AP ICE SPEED” option default to the higher underspeed protection limit as stated in the AFMS. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 21: Disabling Envelope Protection (Envl Dsbl)

    ROLL mode if there is no armed lateral mode. For example, if the active mode is heading (HDG) mode press deselect HDG and engage ROLL. Figure 3-6: Roll Attitude (ROLL) Mode S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 22: Roll Hold (Roll) Mode

    – Tracks GPS steering commands sent by the connected GPS GPSS navigator. NOTE: When interfaced to a DG, there is no course pointer input to the 3100. Set the DG selected heading to the required course value. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 23: Tracking A Vor (Nav)

    VOR to track. Ovrst is annunciated in the center of the bezel to notify of over station passage. Figure 3-8: Over Station (Ovrst) Mode S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 24: Approach (Apr) Mode

    APR mode. If the current active lateral mode is HDG, press to arm APR. Only engage APR mode when cleared for the approach and when on or turning to intercept the final inbound S-TEC 3100 Digital and Analog 4th Ed Aug 2024...
  • Page 25 AFMS during coupled approaches. Active envelope protection may deviate the aircraft from the glide slope path to remain within the airspeed envelope range to maintain safety of flight and reduce the risk of stall. S-TEC 3100 Digital and Analog 3-10 4th Ed Aug 2024...

  • Page 26: Vor Approach (Apr)

    VOR approach. Use PITCH, IAS, or VS mode to descend. At the decision height (DH) or missed approach point (MAP), disconnect AP to execute either a manual landing or go-around (GA), respectively. S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-11...

  • Page 27: Ils Approach (Apr )

    10 seconds has elapsed since glide slope capture. When tracking missed approach altitude can be preselected. At the DH or MAP, disconnect AP to execute either a manual landing or GA, respectively. S-TEC 3100 Digital and Analog 3-12 4th Ed Aug 2024...

  • Page 28: Gps Rnav Approach (Apr /Apr )

    VS, or IAS mode. Recommended altitude at FAF is 1500 feet AGL. Prepare for turn towards FAF. Press once established on the final inbound course to switch to approach mode and arm vertical guidance. S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-13...

  • Page 29: Gpsl

    If an altitude target is active, the aircraft automatically levels off and holds at the selected altitude target (§ 3.8.5). NOTE: If ROLL or PITCH mode was entered by pressing (§ 3.9.4), the altitude target is not captured. S-TEC 3100 Digital and Analog 3-14 4th Ed Aug 2024...

  • Page 30: Indicated Airspeed (Ias) Mode

    VS. A single press changes the VS by 100 fpm. If an altitude target is active, the aircraft automatically levels off and holds at the selected altitude target (§ 3.8.5). S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-15...

  • Page 31: Altitude Hold (Alt Hold) Mode

    The 3100 displays dashed lines for altitude targets ( ) when there is no altitude target, or the target is invalid (altitude captured, no target selected, or loss of signal). S-TEC 3100 Digital and Analog 3-16 4th Ed Aug 2024...

  • Page 32: No Altitude Preselect (Manual Altitude Capture)

    At the desired altitude, press . The 3100 holds the current altitude in ALT HOLD mode. 3.8.5.2. S-TEC 3100 Internal Altitude Preselect Figure 3-19: Target Altitude in Feet with ALT HOLD Mode Armed To use the 3100 internal altitude preselect function: Preselect the target altitude with the SELECT knob.

  • Page 33: S-Tec St 360 Altitude Selector/Alerter

    3 seconds before the 3100 reads the target into memory. This is to avoid the 3100 pitching the aircraft to chase the altitude target as it is being changed. S-TEC 3100 Digital and Analog 3-18 4th Ed Aug 2024...
  • Page 34 3100 synchronizes to the current airspeed when IAS mode is engaged and can be adjusted with CWS or to establish desired speed. PITCH mode – Use CWS or to establish desired climb or descent angle. S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-19...

  • Page 35: Vnav

    When reaching the TOD point and in VNAV Hold mode, VNVCAP becomes active. VNV in the active pitch mode window indicates the 3100 is capturing the descent path. The armed pitch mode changes to ALT. S-TEC 3100 Digital and Analog 3-20 4th Ed Aug 2024...

  • Page 36: Vnav Path (Vnv )

    3100 to set new Pitch, Roll, IAS, VS, or Altitude targets or maneuver around obstacles such as weather or traffic. If envelope protection is active, CWS can be used to establish the aircraft back inside the safe envelope – without disengaging the 3100. S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-21...

  • Page 37: Go-Around (Ga) Button

    3100 transitions to ALT HOLD when reaching the target. NOTE: Some GPS navigators require the pilot to un-suspend the missed approach pattern before engaging NAV mode on the 3100. S-TEC 3100 Digital and Analog 3-22 4th Ed Aug 2024...

  • Page 38: Take-Off-Go-Around (Toga)

    To resume normal AP functionality and cancel the voice alert, AP must be manually engaged by pressing or disconnecting LVL mode using the AP DISC/TRIM INTR button. Figure 3-28: Emergency Level Mode; Servos Engaged, No AP S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-23...

  • Page 39: Half Bank (Hb) Mode

    Figure 3-32: Unmute Icon on 3100 Display Press to increase brightness of 3100, FD, and YD LEDs. Press to decrease brightness of 3100, FD, and YD LEDs. Press to toggle light/dark background. S-TEC 3100 Digital and Analog 3-24 4th Ed Aug 2024...

  • Page 40: Trim

    The manual electric trim switch, located on the control wheel/stick, can only be used to trim the aircraft when AP mode is disengaged. Attempting to use it otherwise disconnects AP but FD mode remains engaged (if previously engaged). S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-25...

  • Page 41: Automatic Trim Disable

    - invalid heading alternating FAIL data for HDG with the Upper Left (Active Roll Mode) mode active - invalid course/ roll mode deviation data for annunciation NAV/APR modes S-TEC 3100 Digital and Analog 3-26 4th Ed Aug 2024...
  • Page 42 GS alternating FAIL deviation data and/ with the Lower Right (Armed Pitch Mode) or invalid altitude armed rate data and pitch mode altitude data for GS annunciation mode S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-27...
  • Page 43 HB: HB is active HB or HB\GA while in HDG mode mode GPSS HB\GA: HB is Steady Center activated while in HDG mode or mode and GPSS GA mode is active S-TEC 3100 Digital and Analog 3-28 4th Ed Aug 2024...
  • Page 44 Steady for 3 seconds or until more than 5 feet away from 200 feet departure mark Upon reaching target ALT: Flash for 2 seconds Envelope protection: Flash continuously S-TEC 3100 Digital and Analog 4th Ed Aug 2024 3-29...
  • Page 45 Any board miscompare (mode or servo command miscompare) for dual board configuration, typically due to an external input S-TEC 3100 Digital and Analog 3-30 4th Ed Aug 2024...

  • Page 46: Section 4 Emergencies

    The system incorporates slip clutches on all servos to allow the pilot to overpower the 3100, trim, and yaw systems. Servo speeds are limited to reduce the effect of hardover conditions to constrain the aircraft excursion due to a hardover condition. S-TEC 3100 Digital and Analog 4th Ed Aug 2024...

  • Page 47: Section 5 Glossary

    Go Around Global Positioning System GPSS Global Positioning System Steering Glide Slope Heading HITS Highway in the Sky Indicated Airspeed Integrated Display Unit Instrument Landing System INIT Initializing INTR Interrupt Localizer S-TEC 3100 Digital and Analog 4th Ed Aug 2024...
  • Page 48 Omnibearing Selector Primary Flight Display Part Number Pulse Width Modulated Reverse Side-In-Command VLOC VOR or LOC Frequency Visual Meteorological Conditions VNAV Vertical Navigation Very High Frequency Omnidirectional Radio Range Vertical Speed S-TEC 3100 Digital and Analog 4th Ed Aug 2024...
  • Page 49 ©2024 Genesys Aerosystems, Inc. All rights reserved. 87325 Product and company names listed are trademarks or trade names of their respective companies.

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