Garmin GFC 600H Pilot's Manual
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Garmin GFC 600H Pilot's Manual

Garmin GFC 600H Pilot's Manual

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GFC 600H
™
Pilot's Guide for Bell 505

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  • Page 1 GFC 600H ™ Pilot’s Guide for Bell 505...
  • Page 3 Garmin is a registered trademarks of Garmin Ltd. or its subsidiaries. This trademark may not be ® used without the express permission of Garmin.
  • Page 4 WARNING: For safety reasons, system operational procedures must be learned on the ground. WARNING: The Garmin system, as installed in this rotorcraft, has a very high degree of functional integrity. However, the pilot must recognize that providing monitoring and/or self-test capability for all conceivable system failures is not practical.
  • Page 5 (“THE GARMIN PRODUCT”), YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin Ltd. and its subsidiaries (“Garmin”) grants you a limited license to use the software embedded in the Garmin Product (the “Software”) in binary executable form in the normal operation of the Garmin Product.
  • Page 6 Part Number Change Summary 190-02775-00 Initial release Date Description June, 2021 Production Release Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 7: Table Of Contents

    Flying An Arc With A GPS Navigator ..................33 2.5 Helicopter Electronic Stability & Protection (H-ESP™) ........... 33 Limit Cueing ........................34 Overspeed Protection ......................36 Low speed Protection ......................37 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 8 5.1 Equipment Terminology ....................47 5.2 System Operation Terminology ................... 47 5.3 Helicopter and System Controls .................. 49 5.4 Mode Annunciations ....................... 50 Section 6 Index ........................Index-1 Index ...........................Index-2 Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 9: Section 1 System Overview

    • Attitude Hold (ATT) — Attitude Hold Mode (ATT) is the lowest functional mode of the GFC 600H system. When in ATT, the system moves the primary flight controls to maintain a pitch and roll attitude set by the pilot. ATT can be used throughout the entire flight envelope.

  • Page 10: Hfcs Equipment

    System Overview • Upper Mode Engagement — The GFC 600H system provides a means to couple the FCS to pitch and or roll Upper Modes. Upper Modes may be selected using the GMC 605H mode keys when above 45 KIAS. Coupled modes will automatically disengage if the airspeed drops below 35 KIAS.

  • Page 11: Gmc 605H Mode Controller

    System Overview GMC 605H MODE CONTROLLER The panel-mounted GMC 605H serves as the primary user interface for the GFC 600H. The GMC provides mode selection buttons and a wheel for convenient adjustment of the Upper Mode vertical references. A backlit monochrome NVIS (night vision) friendly LCD displays active and armed modes, reference values, alerts, and messages.

  • Page 12: Attitude And Air Data Sensors

    GFS 83 (Direct Drive) ATTITUDE AND AIR DATA SENSORS The GFC 600H system uses a minimum of two attitude sources and one air data source. The GMC 605H provides one attitude solution which is used to monitor the primary attitude solution provided by a GSU 75H ADAHRS sensor.
  • Page 13 Computer for determination of OAT and true airspeed. GSU 75H A Garmin GPS is required as an aiding source for the GMC 605H and GSU 75H ADAHRS and for GPS based modes including Groundspeed Hold and GPS navigation. COLLECTIVE POSITION SENSOR The GFC 600H collective position sensor provides collective position to the GFC 600H to improve FCS performance.

  • Page 14: Hfcs Controls

    Selects/deselects Indicated Airspeed Mode VS Key Selects/deselects Vertical Speed Mode ALT Key Selects/deselects Altitude Hold Mode NOSE UP/DN Adjusts the reference in Vertical Speed, Indicated Airspeed, and Wheel Altitude Hold modes Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 15: External Controls

    System Overview EXTERNAL CONTROLS These controls provide FCS control functions but are not found on the GMC 605H. Force Trim Release Cyclic Switches Collective Switches 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 16 CPLD Upper Modes: The trim switch changes the reference altitude, vertical speed, or indicated airspeed, as applicable. Engages the pitch, roll, and optional yaw axis in Level Mode Cyclic (Blue) LVL Mode. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 17: System Indications

    The message area can display up to four messages simultaneously. Text can be flashed alternating between normal display and inverse video for conditions which require the pilot’s attention. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 18 LED annunciations. SERVO STATUS The servo status field (R=Roll, Y=Yaw, P=Pitch) indicates when the servos are engaged. This field also provides an indication when the servos are out of detent. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 19 Roll Servo (Out of Detent) Yaw Servo (Engaged) Pitch Servo (Engaged) GMC 605H Servo Status 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 20: Garmin Pfd Hfcs Indications

    GFC 600H and the GIA 63 or GIA 64. PFD Visual Alerts and Messages Refer to the applicable Garmin G1000H or G1000H NXi Pilot’s Guide for detailed information. Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 21: Section 2 Helicopter Flight Control System

    Supplements for additional details regarding required checks. Any discrepancies must be resolved before flight. Upon power-up the GFC 600H will automatically perform a Pre-Flight Test (PFT) to check internal GMC 605H functions, interfaces, and servo status. While the test is in progress the GMC displays the message PFT.

  • Page 22: Engaging The Helicopter Flight Control System

    & balance conditions. The rotorcraft must be within the GFC 600H engagement limits in order to engage the Helicopter Flight Control System. Refer to the Bell 505 RFMS for engagement limits.

  • Page 23: Upper Modes

    The Upper Mode is automatically disabled if the information required to compute the modes becomes invalid or unavailable. The GFC 600H system supports coupled flight in the pitch and/or roll axes. When coupling a single axis, the remaining axis operates in ATT. This state is indicated on the GMC by showing ‘ATT’...

  • Page 24: Hfcs Operation Limitations

    The primary objective of the yaw axis is to provide coordinated flight. The detent for the yaw axis is set accordingly. Refer to the Bell 505 RFMS for yaw axis cruise to hover transition speeds. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 25 This allows the pilot to adjust the rotorcraft’s heading and have the HFCS follow the turn while taxiing over a center line. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 26 • Use the cyclic trim switch to change the pitch or roll attitude reference. • Activate a Upper Mode. • Disengage the FCS. Level Mode may be helpful if the rotorcraft is inadvertently flown NOTE: into IMC conditions. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 27: Vertical Coupled Modes

    VS, IAS, or ALT modes and the cyclic trim switch can be used to change the vertical mode reference when coupled. Refer to the Bell 505 RFMS for increments of change and limits for each of these references. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 28: Altitude Hold Mode (Alt)

    Captures and tracks the ILS Glideslope glideslope on approach * When the GFC 600H is receiving a Selected Altitude value from the PFD, ALTS is armed automatically when VS or IAS modes are active. Helicopter Flight Control System Vertical Mode Summary ALTITUDE HOLD MODE (ALT) Altitude Hold mode can be activated by pressing the ALT key;...

  • Page 29: Selected Altitude Capture Mode (Alts)

    HFCS GMC 605H ANNUNCIATIONS The GMC 605H annunciates ‘ALT’ for Altitude Hold mode. If a Garmin PFD is installed, the GMC also shows the reference altitude in the mode reference section. GMC 605H Annunciating Altitude Hold Mode SELECTED ALTITUDE CAPTURE MODE (ALTS) Selected Altitude Capture mode is a transitional mode used in conjunction with other vertical modes.

  • Page 30: Vertical Speed Mode (Vs)

    NOSE UP/DN wheel. GMC 605H ANNUNCIATIONS The GMC 605H annunciates ‘VS’ for Vertical Speed mode. Additionally, the GMC 605H annunciates the Vertical Speed Reference in the mode reference section. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 31: Indicated Airspeed Mode (Ias)

    3) GMC 605H: Press the APR key. The HFCS maintains the current mode but arms Glidepath mode. If the current vertical mode is ATT then IAS mode will become the active mode with GP armed. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 32 MDA even if the MDA is set in the altitude preselect. GMC 605H ANNUNCIATIONS The GMC 605H annunciates ‘GP’ for Glidepath mode. Since Glidepath mode relies on GPS positioning, the ‘GPS’ lateral mode is also annunciated. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 33: Glideslope Mode (Gs)

    • LOC must be the active lateral mode. • Vertical deviation is valid. • The CDI is at less than full-scale deviation. • Must be captured from below the glideslope. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 34: Lateral Coupled Modes

    Captures and tracks the Selected Heading Select Heading Navigation, GPS Navigation, VOR Enroute Capture/Track Captures and tracks the selected navigation source (GPS, VOR, LOC) Navigation, LOC Capture/Track (No Glideslope) Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 35: Heading Select Mode (Hdg)

    270˚ turn to the right). However, Selected Heading changes of more than 340˚ at a time result in turn reversals. GMC 605H ANNUNCIATIONS The GMC 605H displays the HDG annunciation when Heading Select mode is active. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 36: Navigation Modes (Gps, Vor, Loc)

    HDG becoming the active mode. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 37 GMC 605H ANNUNCIATIONS The GMC 605H annunciates the appropriate lateral mode as GPS, VOR, or LOC depending on the selected navigation source when the NAV key was pressed. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 38: Approach Modes (Gps, Vapp, Loc)

    GMC 605H Annunciating GPS Approach Mode Armed If the CDI deflection is less than half scale, the approach mode immediately becomes the active mode when the APR key is pressed. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 39 LOC Approach mode allows the HFCS to fly an ILS approach with a glideslope. When LOC Approach mode is armed, Glideslope mode is also armed automatically. LOC captures are inhibited if the difference between rotorcraft heading and localizer course exceeds 105°. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 40 LOC and GS, and GPS Approach mode as GPS and GP. The annunciation displayed is based on the selected navigation source when the APR key is pressed. GMC 605H Annunciating Various Approach Modes Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 41: Flying An Arc With A Gps Navigator

    H-ESP consists of the following functions: • Limit Cueing - Pitch Attitude Threshold - Roll Attitude Threshold - Overspeed Protection - Low-G Protection 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 42: Limit Cueing

    When limit cueing is active the pilot can press the FCS DISC switch to remove limit cue forces. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 43 H-ESP Roll Operating Range When Engaged (SEE RFMS FOR ACTUAL LIMITS) (Force Increases as Roll Increases & Decreases as Roll Decreases) Limit Cue is automatically disengaged if the rotorcraft reaches the HFCS roll engagement attitude limit. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 44: Overspeed Protection

    HFCS airspeed. The maximum HFCS airspeed is 10 knots below the current computed Vne as determined by altitude and temperature. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 45: Low Speed Protection

    The GFC 600H system computes the current Vne based on CAUTION: altitude and/or temperature. The GFC 600H does not adjust Vne based on aircraft weight, configuration, or operation. It is the pilot’s responsibility to know the current applicable Vne for the rotorcraft and operate within the Vne limit regardless of FCS mode of operation.
  • Page 46 Adjust the trim NOSE DOWN using the TRIM or GMC 605 NOSE UP/DN wheel (decrease VS or ALT). • Change the FCS vertical mode to IAS or ATT. • Disengage the HFCS. GMC 605H Underspeed Protection Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 47: Section 3 Annunciations & Alerts

    SECTION 3 ANNUNCIATIONS & ALERTS 3.1 VISUAL ANNUNCIATIONS AND ALERTS The GFC 600H provides visual annunciations and alerts to notify the pilot of system status, failures, degraded operation, and conditions requiring specific pilot action. The table below summarizes the messages that may appear on the GMC 605H’s display along with any associated LED illumination, and a brief description.

  • Page 48: Gmc 605H Cas Messages

    Upper Mode Overspeed and Lowspeed protection remains operational. Preflight test is in progress Preflight test has failed. The FCS is inoperative. The FCS LED PFT FAIL illuminates steady red. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 49 The ALT key on the GMC 605H is stuck in the active state ALT KEY LVL KEY The LVL key on the GMC 605H is stuck in the active state CAS Messages 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 50: Gmc 605H Annunciations

    Mode decoupled Abnormal FCS Disconnect Continuous flashing red Disconnect Continuous flashing red until FCS Fail FCS FAIL System acknowledged, then steady red Failure Yaw Axis Failure YAW FAIL Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 51: Aural Alerts

    Annunciations & Alerts 3.2 AURAL ALERTS The GFC 600H outputs aural annunciations and alerts to provide enhanced awareness to the pilot of several key HFCS conditions. VOICE ALERTS Voice alerts are played through the rotorcraft audio panel and are heard through the pilot and co-pilot ICS.

  • Page 52: Flight Control System Disconnect Alert

    FCS DISC button again to silence the alert. Abnormal (automatic) disengagement results in the alert being played continuously until silenced by the FCS DISC or FTR button. Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 53: Section 4 Abnormal Operation

    Abnormal Operation SECTION 4 ABNORMAL OPERATION 4.1 SUSPECTED FLIGHT CONTROL SYSTEM MALFUNCTION Refer to the Bell 505 RFMS for abnormal operations. 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 54 Blank Page Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 55: Section 5 Terms & Conventions

    GMC 605H equipment also houses 1 of 2 attitude solutions used in the flight control system. Garmin Force-Trim Servo. This is a “smart” servo that is installed in parallel with the helicopter primary flight controls. Parallel GFS 83 means that the servo is attached to the existing controls such than when these servos move, the pedals and cyclic move with them.
  • Page 56 H-ESP (Limit Cue protection) is still active when the STBY (Standby) system is in standby to protect the pilot from exceeding the operating limits of the helicopter. System Operation Terminology Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 57: Helicopter And System Controls

    FTR will reset the vertical descent to the new condition. While pressed the forces required to move the controls out of detent are reduced. Helicopter and System Controls 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...

  • Page 58: Mode Annunciations

    Upper Mode airspeed. OSP (Overspeed Provides control saturation and adjustments to prevent overspeed Protection) of the rotorcraft. VS (Vertical Speed Maintains vertical speed. Hold Mode) Upper Modes Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...
  • Page 59 Heading Select Mode 27 Navigation Modes (GPS, VOR, LOC) Glidepath Mode 23, 31 LCD Display 6 Glideslope Mode 25 Line Replaceable Unit (LRU) 1, 2 GMC 605 3, 6 Index-1 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 60 Annunciations 39, 45, 47, 49, 50 PFD HFCS Indications 12 ROL. Roll Hold Mode Selected Altitude 21 Selected Altitude Capture Mode 21 Selected Heading 27 System Controls 6 Underspeed Protection 37 Index-2 Garmin GFC 600H Pilot’s Guide for Bell 505 190-02775-00 Rev. A...

  • Page 61: Section 6 Index

    Index Index-3 190-02775-00 Rev. A Garmin GFC 600H Pilot’s Guide for Bell 505...
  • Page 62 Salem, OR 97302, U.S.A. Garmin (Europe) Ltd. Liberty House, Hounsdown Business Park Southampton, Hampshire SO40 9LR U.K. Garmin Corporation No. 68, Zhangshu 2nd Road Xizhi District, New Taipei City, Taiwan flygarmin.com 190-02775-00 Rev. A © 2021 Garmin Ltd. or its subsidiaries...

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