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FlightSim Developers 

 

 

KFC 225 Autopilot 

Pilot Handbook 

 

- 16 – 

For use with Microsoft Flight Simulator only. Not to be used in real world aviation. 

The KFC225 will send instructions to the control motor for the 

elevator trim to maintain this vertical speed as closely as 

possible, until the setting is changed, or the function is 

discontinued. 

 

 

The ARM indicator will annunciate while the aircraft is 

seeking the selected vertical speed. If that vertical 

speed is maintained, the indicator will go dark. 

The autopilot will control the elevator trim to maintain the 

selected vertical speed, until: 

 

 

The selection is changed to a different value. 

 

The VS switch is pressed again, changing back to 

Fixed Pitch Function

. 

 

The ALT switch is pressed. 

 

The 

AP Master Key

 is switched OFF. 

 

 

 

1.3.3.3 ALT MODE 

 

 

Press the ALT key to engage ALT Mode. When the KFC225 is in 

Active Mode

, the servo 

controls will control the aircraft's pitch axis to maintain a preselected altitude. 

 

 

Ensure that the 

AP Master Key

 is ON fo

Active Mode

. 

 

 

When the ALT Key is pressed, the KFC225 is in Altitude Hold mode. The altitude preselect will be 

automatically set to present altitude. If the ALT button is pressed with an established climb or 

descent rate present, there will be approximately a 10% (of VS rate) overshoot, with the airplane 

returned positively to the selected altitude. * 

 

 

 

If pressed when ALT hold mode is 

engaged, ALT Mode will 

disengage, defaulting to 

Pitch 

Mode

. 

 

 

 

*  Describes the function of the unit in standard mode. If "Use FS Style Autopilot" is selected in the Control 

Center, the unit will not select the present altitude when the ALT button is pressed, nor will it be locked out 

if the aircraft is climbing or descending. 

 

Altitude Selection 

 

 

Use the Preselector Knob for Altitude Preselect, at the desired altitude, in feet.  

 

Summary of Contents for KFC225

Page 1: ...KFC225 Autopilot...

Page 2: ...using it in flight To take full advantage of the capabilities of this system it is important that the pilot understand its capabilities and limitations The pilot should take time to read and thorough...

Page 3: ...components and their relationship in a typical KFC 225 system The actual components on individual aircraft will vary according to your specifications 1 1 POWER APPLICATION AND PREFLIGHT TESTS A prefli...

Page 4: ...being illuminated 1 2 CONTROLS AND DISPLAYS Figure 1a 1 Yaw Damper Key 5 NAV Control Key 9 VS speed Down Key 13 Preselect Control 2 Autopilot Key 6 Approach Hold Key 10 VS Speed Up Key 14 Digital Disp...

Page 5: ...ft cfg file In order for the Flight Director to work the following entry must be present in the autopilot section of the aircraft cfg file flight_director_available 1 If this value is set to zero the...

Page 6: ...ated the mode is active The yaw damper is independent of autopilot operation It is a device designed to reduce the rolling and yawing oscillations due to Dutch Roll It requires the installation of yaw...

Page 7: ...control servos for aileron and rudder trim to maintain this course Roll Mode allows pilot selection of a fixed roll value The aircraft maintains that roll until the setting is changed or the mode is...

Page 8: ...y indicates a port or starboard roll Press the AP Master Key to engage Active Mode Once engaged in Active Mode the ARM indicator will annunciate on the Display Panel The aircraft will maintain a const...

Page 9: ...provide precise control and maintain a specific course The Flight Director FD key can be ON or OFF while operating in this mode and toggles the attitude indicator PFD flight director bars ON OFF The...

Page 10: ...on off When the system is engaged the key will illuminate This function is one of three that receives its input data from the NAV 1 Radio This function is designed to follow the radial selected on th...

Page 11: ...setting is not changed The signal is being received from the NAV 1 radio The AP Master Key is on and the unit is in Active Mode The NAV Hold Function is not overridden by APR or REV modes No Error Re...

Page 12: ...r is switched OFF Reverse Backcourse Function Depress this key to toggle the Reverse Hold mode on off When the system is engaged the key will illuminate This function requires a valid localizer backco...

Page 13: ...elation to the target altitude The microprocessor in the KFC225 commands the control servos for elevator trim to maintain the selected altitude Pitch Mode allows pilot selection of a fixed pitch value...

Page 14: ...ciated with the visual annunciation flashing for two seconds When the aircraft is within 50 feet of its target altitude the Altitude Alert Indicator will extinguish and an aural annunciation consistin...

Page 15: ...will annunciate while the aircraft is seeking the selected pitch If that pitch is maintained the indicator will go dark The autopilot will control the elevator trim to maintain the selected pitch unti...

Page 16: ...ALT key to engage ALT Mode When the KFC225 is in Active Mode the servo controls will control the aircraft s pitch axis to maintain a preselected altitude Ensure that the AP Master Key is ON for Activ...

Page 17: ...Vertical Speed Indication another five seconds The display will then revert to ALT Display Mode 1 3 3 4 PITCH AXIS FAILURE Failure Annunciators When illuminated indicates failure of the pitch axis an...

Page 18: ...FlightSim Developers KFC 225 Autopilot Pilot Handbook 18 For use with Microsoft Flight Simulator only Not to be used in real world aviation Fault Condition Display This space left intentionally blank...

Page 19: ...HDG Key and the AP Master key to switch the KFC225 to Heading Hold Function and Active Mode B Press the VS Key and use the UP Key to set the pitch axis to 700 FPM climb Rotate the Preselect Control t...

Page 20: ...b to 6 000 feet Press the HDG Key and the AP Master key to switch the KFC225 to Heading Hold Function and Active Mode B Turn the HSI heading bug to 120 C The aircraft turns to the selected heading A A...

Page 21: ...ing bug to 20 and select the HDG Key The aircraft maintains a heading of 20 B Select 60 on the OBS control and select the NAV Key on the KFC225 C Ensure the aircraft s NAV GPS switch is in the GPS pos...

Page 22: ...he AP Master key is also ON and illuminated B Turn the OBS knob until the pointer is set to the Front Course runway heading of 013 Press the REV key on the KFC225 This will engage REV standby mode C W...

Page 23: ...the APR Key to arm the Approach Coupling System The aircraft is flying level at the runway approach altitude of 2 700 feet In APR mode the glideslope mode is automatically armed B With the Approach C...

Page 24: ...on The OBS selector is turned to an outbound radial of 330 Turn the heading bug to 270 and press the HDG Key Then press the NAV Key The KFC225 will maintain HDG Mode B When the CDI shows less than 50...

Page 25: ...cture in the folder FlightSim Developers Bendix King Control Center exe Course Mode Servo Controlled Mode for the autopilot roll axis Sets a microprocessor defined course heading determined by the HSI...

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