Textron Bendix/King KFC 500 Pilot's Manual

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KFC 500

Pilot's Guide

Bendix/King

Dual Automatic Flight Control System

for the Model 430

006-18081-0000

June 1999

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Page 1 KFC 500 Pilot’s Guide Bendix/King ® Dual Automatic Flight Control System for the Model 430 006-18081-0000 June 1999...
Page 2 WARNING Prior to export of this document, review for export license requirement is needed. COPYRIGHT NOTICE ©1998, 1999 Honeywell International Inc. Reproduction of this publication or any portion thereof by any means without the express written permission of Honeywell International Inc. is prohibited. For further information contact the Manager, Technical Publications;...
Page 3 Revision History Revision History and Instructions Manual KFC 500 Pilot’s Guide Revision 1, June 1999 Part Number 006-18081-0000 This revision consists of the folowing: Add text further describing the operation of the push-buttons, the push-but- ton annunciators, and the EADI annunciators to the following pages - 20, 23, 25, 26, 27, 30, 31, 37, 46, 47, 50, 51, 53, 56, 57, 59, 60, 61, 63, 64, 65, 67, 68, 69, 71, 72, 73 Administrative changes to the following pages - Front Cover, Inside of Front...
Page 4 Revision History June 15, 1999 006-08769-0000...
Page 5: Table Of Contents
Table of Contents Introduction ................3 Normal Operation SCAS/Autopilot ..............5 SCAS/Autopilot Block Diagram ..........7 Basic Dual SCAS/AP Operation ..........8 SCAS/AP Remote Switches ..........8 Force Trim 1/OFF ..............8 Force Trim 2/OFF ..............8 AFCS GROUND TEST ............9 SCAS & AP PWR 1/OFF .............9 SCAS &...
Page 6: Introduction
Introduction Table of Contents Normal Operation (Continued) The dual KFC 500 Automatic Flight flight tested and passed prior to Autolevel Mode............32 Control System is available in two departure to insure that it will be Altitude Select (ALT SEL)..........32 configurations for the Bell 430. available if needed during flight and Altitude Hold (ALT) ............33 These configuration are a basic dual...
Page 7: Normal Operation
Introduction available. When the KFC 500 de- tained diagnostic tests assist trouble- couples a SCAS/autopilot axis it both shooting done by maintenance per- engages the affected servo brake sonnel at Honeywell factory and shuts off motor drive power, pro- approved service centers. The Built- viding dual layers of protection In-Test functions enable a technician against servo over-control.
Page 8 Normal Operation Basic Dual KFC 500 SCAS/Autopilot System Block Diagram This page intentionally left blank. Collective KMS 541 Cyclic Switches Mode Selector Switches SCAS & AP PWR 1 SCAS & SCAS/AP Remote AP PWR 2 Switches/Annunciators FORCE FORCE AP ON TRIM 1 TRIM 2 RADIO...
Page 9: Basic Dual Scas/Ap Operation
Normal Operation Normal Operation Basic Dual SCAS/AP may be selected to continue the flight ation is not illuminated. SCAS & AP PWR 1 /OFF with basic AP and SCAS modes Operation SCAS & FORCE available. Any modes engaged AP PWR 1 TRIM 2 when AP Select switch is toggled will This section provides the Normal...
Page 10: Test/Brt/Dim (Afcs Lamp Test)
Normal Operation Normal Operation TEST/BRT/DIM (AFCS LAMP shall remain on as long as the switch has been detected or if SCAS/AP button. The corresponding mode is held in test position up to a maxi- PWR is OFF. Single axis failures will lamp will illuminate above the switch.
Page 11: Ap Mode
Normal Operation Normal Operation level attitude and maintain the head- back to the attitude existing at the commanded to follow the pilot’s or is stabilizing the helicopter against ing at the time the aircraft rolls level. time that the pilot intervened. copilot’s input to roll left or roll right.
Page 12: Pitch Command Control
Normal Operation Normal Operation SCAS/Autopilot Disconnect Activating Discrete or Continuous Lateral Command has the following effect upon the command reference for autopilot operation: AFCS DISC Autopilot Lateral Command Values Discrete Command System Response Roll Attitude If within ± 6° of level flight: First Click=6°, Subsequent=1°...
Page 13: Yaw Force Trim Release
Normal Operation Yaw Force Trim Release FORCE TRIM RELEASE KFC 500 Flight Director A collective mounted Yaw ForceTrim Release switch (Yaw FTR) is pro- vided for the primary system only (Force Trim power # 1). If the Force Trim System # 1 is on and primary system selected, depressing this switch releases the yaw clutch (AFCS yaw axis will revert to SCAS...
Page 14 Normal Operation KFC 500 Dual SCAS/Autopilot/Single Flight Director System Block Diagram This page intentionally left blank. Collective KMS 541 Cyclic Switches Mode Selector SCAS & Switches AP PWR 1 SCAS/AP Remote SCAS & AP PWR 2 Switches/Annunciators Display EFIS PWR FORCE FORCE AP ON...
Page 15: Scas/Ap Operation (Flight Director Installed)
Normal Operation Normal Operation The following section provides an explanation of the normal operating proce- Flight Director Operation dures for the flight director functions of the dual KFC 500 SCAS/AP System when equipped with Flight Director. The Flight Director functions are only available when the primary (#1) system is selected.
Page 16: Lateral Command Control
Normal Operation Normal Operation tive mounted push-button provides switch determines which pilot is in by pressing and holding the Force Lateral Command Control the engage function only. To discon- control of the single KFC 500 flight Trim Release (FTR) switch on the Activated by the Cyclic Beep Trim nect Go Around select another pitch director.
Page 17: Vertical Command Control
Normal Operation Normal Operation existing roll attitude if greater than 6°. ARM (altitude preselect arm), ALTC AFCS DISC Roll attitudes of less than six degrees of (altitude capture), GS (glideslope), FD OFF bank will cause the Flight Director to GA (go around), overspeed protec- revert to commands for roll-level flight tion (nose down or increasing air- with heading hold.
Page 18: Force Trim Release (Ftr)
Normal Operation Normal Operation Force Trim Release (FTR) Autolevel, HDG select, NAV or APR Go Around modes including GS. Upon release of the FTR switch, the flight director will provide commands to return to or maintain the steering required for these modes, while FTR is held pressed the commands displayed will be synchronized to the heli-...
Page 19: Autopilot/Flight Director Mode Annunciation
Normal Operation Normal Operation Autopilot/Flight Director Mode Annunciation KMS 540 Flight Director Mode Selection Heading Select (HDG) mode loss) or another lateral mode is selected. Depressing the HDG push-button on 120 KT the mode select panel activates Bank Angle Limit (BL) Heading Select mode.
Page 20: Navigation Mode (Nav)
Normal Operation Normal Operation button will deactivate the mode and play always be aligned with the angles up to 25° unless a bank limit vation of NAV or another lateral revert the flight director back to the is selected. Bank limiting is allowed ILS front course.
Page 21: Autolevel Mode
Normal Operation Normal Operation tion may be extinguished by pressing played in the KAV 485’s selected alti- Altitude Hold (ALT) mand the aircraft to hold the altitude and releasing the APR push-button tude window. ALT SEL requires use present at the moment of mode (pilot acknowledgment) on the mode of PIT, VS, GA or IAS modes to be selection.
Page 22: Indicated Airspeed Hold (Ias)
Normal Operation Normal Operation Indicated Airspeed Hold the mode selector is pushed and position of the vertical speed bug. The reference vertical speed being released (pilot acknowledgment of When the knob is pushed in the flown is displayed on the EADI in the mode loss) or another vertical mode knobs modify the selected alti- AFCS annunciation field and by the...
Page 23: Flight Control System Components
Normal Operation Normal Operation KSM 575 Linear Actuator Flight Control System Components include control position feedback from the control position transducers, Assemblies (SCAS, Autopilot, and Flight Director) and Attitude, Directional, and Rate pitch and roll axes will remain in AP KSA 572 Trim Actuator information from the vertical, direc- mode (SCAS annunciated on Mode...
Page 24: Krg 333 Rate/Acceleration Sensor
Normal Operation Normal Operation mation to the EFIS and each Flight KAD 480 Air Data System KAV 485 Altitude/Vertical Speed Indicator Computer.The Free/Slave switch The KAD 480 Digital Air Data allows the pilot to select either Free ı System is comprised of the KDC or Slaved Magnetic Heading mode.
Page 25: Kav 485 Altitude/Vertical Speed Indicator
Normal Operation Normal Operation KAV 485 Altitude/Vertical Speed Indicator Altitude Select/Density Altitude - Altitude Alert - Illuminates when the Provides continuous display of alti- aircraft’s current altitude is within 300 The KAV 485 Altitude/ Vertical ALT Flag - The “ALT” Flag and digi- tudes selected for altitude alerting - 1000 feet of the value specified in Speed Indicator provides centralized...
Page 26: Emergency Procedures/Limitations
Normal Operation Vertical Speed Engage Pushbutton - Pressing the vertical speed engage push-button (ENG) causes the flight director to com- mand the aircraft to climb or descend at the rate indicated by the vertical speed bug on the IVSI. KFC 500 Note: If the VS bug is in view when VS is engaged, the preselected VS will be commanded.
Page 27: Preflight Procedures
Emergency Procedures/Limitations KFC 500 Important: This Pilot’s Guide provides a general description of the various operational characteristics of the dual KFC 500 Dual Flight Control System. However, operation of the system should not be attempted without first reviewing the applicable Transpor t Canada and/or Federal SCAS/Autopilot Avaition Administration Approved Rotorcraft Flight Manual for complete system familiarization, Emergency...
Page 28 Preflight Procedures Preflight Procedures Caution: The Autopilot (AP) 2. Activate SCAS & AP PWR 1 Getter” to extinguish the flash- cleared but will turn on again at moves the controls during pre- and SCAS & AP PWR 2 ing AFCS DISC IIDS annuncia- the end of preflight test.
Page 29: Operational Examples
Preflight Procedures 481T will set the Altitude Select system may still be displayed if display at 28,000 ft. and will set that axis has failed preflight test. the displayed aircraft altitude to Autopilot/SCAS engagement is 26,800 ft. The aircraft’s dis- allowed using axis/axes that played altitude will then ramp up passed test and are valid.
Page 30 Operational Examples Attitude Hold Depress Flight Director push button on the Alternatively: mode select panel. 1. Establish the desired pitch and roll attitude. Attitude Hold Operation maintains the helicopter’s reference attitude (not alti- tude). Depress the “AP” push button on the mode Flight Director command bars come into view with the reference pitch attitude select panel.
Page 31 Operational Examples Flight Director Off Heading Select Flight Director Off causes the flight director to declutter and the autopilot to Position the Heading Bug over the heading to be commanded by the revert to Attitude Hold. flight director. FD OFF Depress the FD OFF switch on the 1 2 .
Page 32 Operational Examples Yaw Force Trim Release Navigation Coupling To reposition the pedals when the yaw axis is engaged, press and hold the Select the desired navigation source on the EHSI. Yaw Force Trim Release switch. The yaw magnetic brake will disengage, Use the CRS knob to select the course to be tracked.
Page 33 Operational Examples Go Around Mode Prior to or when the MDA BL25 BL25 or DH is reached, depress the GO AROUND push button on the collective switch panel and add appropriate climb collec- tive power. The flight director will pro- vide commands to climb at 750 feet per minute.
Page 34 Operational Examples After takeoff establish the appropriate climb attitude. When a safe altitude Take Off and Climb Prior to takeoff, press the FD switch on the mode selector. Select the has been reached, activate the heading select mode by depressing the HDG assigned altitude on the altitude select portion of the altimeter/vertical speed push button on the mode select panel.
Page 35 Operational Examples At a safe altitude, depress the AP push button on the mode select panel. A momentary tone and alert annunciation is initiated at 1,000 feet prior to The autopilot will engage and respond to the command bars. The autopilot will reaching the selected altitude.
Page 36 Operational Examples When the computed capture point is reached, the BC approach coupled Procedure Turn to an ILS Approach With heading and altitude hold engaged, the aircraft is flying 270° to inter- cept the localizer outbound. The localizer front course (inbound) of 58° is mode is automatically activated and a left turn outbound on the localizer is commanded by the flight director and satisfied by the autopilot.
Page 37 Operational Examples Throughout the approach procedure, the airspeed must be controlled by During the procedure turn outbound, the deviation bar shows pictorially that At the point specified to begin the procedure turn inbound, select 103° the aircraft is flying away from the localizer centerline at a 45° angle. with the heading bug for a 180°...
Page 38 Operational Examples ILS Approach The autopilot is following the flight director commands which maintain localizer centerline tracking. At the outer marker the glideslope pointers are approximately at midpoint. At the glideslope capture point, glideslope auto- matically transitions from arm (GS in white) to coupled (GS in green) and alti- tude hold or other vertical mode is disengaged.
Page 39 Operational Examples At decision height decide to complete the landing. The AFCS will track The heading bug had previously been set to the missed approach head- the localizer and glideslope down to 100 foot radar altitude where the system ing of 90°. Depressing the HDG push button activates heading mode and will transition to autolevel.
Page 40 Operational Examples Note: Always set the navigation course pointer to the inbound heading for Localizer Back Course Approach In heading select and the desired pitch mode with the localizer fre- quencey selected as the active navigation receiver, the aircraft is flying 45° to the localizer front course.
Page 41 Operational Examples At the point specified to begin the procedure turn inbound, select 315° The autopilot is following the flight director commands which maintain with the heading bug for a 180° turn toward the localizer. The deviation bar localizer centerline tracking. A number of options are available to help you shows pictorally the course you are to intercept as well as the angle of inter- descend while the autopilot remains coupled.
Page 42: Performance Specifications
Operational Examples This page intentionally left blank. KFC 500 Dual SCAS/Autopilot and single Flight Director Performance Specifications 006-18081-0000 March 27, 1998 006-18081-0000 March 27, 1998...
Page 43 Performance Specifications Performance Specifications Mode Parameter KFC 500 Value Mode Parameter KFC 500 Value Attitude Hold Pitch Command Profile 0.1G or 2 Deg/Sec Go-Around Pitch Up Command Pitch to 750 fpm Climb Pitch Hold Accuracy ± .3 Deg Smooth Air Roll Angle Limit 25 Deg Alt Sel...
Page 44 Performance Specifications This page intentionally left blank. 006-18081-0000 March 27, 1998...
Page 45 Honeywell International Inc. One Technology Center 23500 West 105th Street Olathe, Kansas 66061 FAX 913-712-1302 Telephone: (913) 782-0400 ©1998, 1999 Honeywell International Inc. 006-18081-0000 Rev. 1 6/99...