I have a plane I want to add an autopilot to. I have the autopilot gauge on the panel. I have enabled the autopilot in the aircraft.cfg and air files. The altitude feature works OK. In heading or NAV mode it does not work. The aircraft.cfg has an autopilot section with what seem like the right entries. I have a VOR also that works. What else do I have to do to get the HDG and NAV functions to work right? Thanks, regards, Bob.

I have a plane I want to add an autopilot to. I have the autopilot gauge on the panel. I have enabled the autopilot in the aircraft.cfg and air files. The altitude feature works OK. In heading or NAV mode it does not work. The aircraft.cfg has an autopilot section with what seem like the right entries. I have a VOR also that works. What else do I have to do to get the HDG and NAV functions to work right? Thanks, regards, Bob.

What aircraft are you trying to add the AP to?

What aircraft are you trying to add the AP to?

It's an Ayres Turbo Thrush MRCU. Thanks, regards, Bob.

It's an Ayres Turbo Thrush MRCU. Thanks, regards, Bob.

Bob,There were a few elements that needed to be included for the AP to function. Below are two seperate sections that you need to cyt and paste into the existing files more or less replacing all of the original content...MAKE A BACKUP OF YOUR ORIGINAL FILES...Two files to be modded.. aircraft.cfg and panel.cfg.Have fun,DouglasFOR aircraft.cfg[fltsim.0]title=Ayres Turbo Thrush MRCU sim=Thrushmodel=5-bladespanel=sound=texture=MRCUpanel_alias = sound_alias = kb_checklists=kb_reference=atc_id=VP-CKFatc_id_color=0xff000000ui_manufacturer=Ayresui_type=Turbo Thrushui_variation=MRCU 'Mosquito Research and Control Unit'description=Turbine powered agricultural aircraft.\n\nEngine: Pratt & Whitney PT6A-34AG (750 shp)\nHopper capacity: 510 Gallon (1938 lit)atc_parking_types=RAMPatc_heavy=0atc_airline=atc_flight_number=prop_anim_ratio=0.8[General]atc_type=ROCKWELLatc_model=performance=Never exceed speed: 159 MPh\nStall speed (empty, flaps down): 57 MPh\nWorking Speed: 90 - 150 MPh\nCategory=airplane[airplane_geometry]wing_area = 326.600wing_span = 44.500wing_root_chord = 7.340wing_dihedral = 2.000wing_incidence = 1.500wing_twist = 0.000oswald_efficiency_factor= 0.700wing_winglets_flag = 0wing_sweep = 0.000wing_pos_apex_lon = -8.000wing_pos_apex_vert = -0.850htail_area = 22.660htail_span = 16.010htail_pos_lon = -40.000htail_pos_vert = 2.300htail_incidence = 0.000htail_sweep = 0.000vtail_area = 21.800vtail_span = 4.300vtail_sweep = 0.000vtail_pos_lon = -26.200vtail_pos_vert = 4.600elevator_area = 23.700aileron_area = 100.000rudder_area = 14.130elevator_up_limit = 28.000elevator_down_limit = 21.000aileron_up_limit = 25.000aileron_down_limit = 15.000rudder_limit = 35.000elevator_trim_limit = 19.500spoiler_limit = 0.000spoilerons_available = 0aileron_to_spoileron_gain = 1.000min_ailerons_for_spoilerons = 0.000min_flaps_for_spoilerons = 0.000auto_spoiler_available=0positive_g_limit_flaps_up=4.000000positive_g_limit_flaps_down=2.000000negative_g_limit_flaps_up=-1.500000negative_g_limit_flaps_down=-1.500000[direction_indicators]//1 Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyro, 3=Electro-Mag Slaved Compass, 4=Slaved to another//2 Indicator number of slaving indicator if Type = 4direction_indicator.0=3,0[attitude_indicators]//Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyroattitude_indicator.0 = 1 [autopilot]autopilot_available= 1flight_director_available= 0default_vertical_speed= 1000.0autothrottle_available= 0pitch_takeoff_ga=8.0max_pitch=10.0max_pitch_acceleration=1.0max_pitch_velocity_lo_alt=2.0max_pitch_velocity_hi_alt=1.5max_pitch_velocity_lo_alt_breakpoint=20000.0max_pitch_velocity_hi_alt_breakpoint=28000.0max_bank=25.0max_bank_acceleration=1.8max_bank_velocity=3.00max_throttle_rate=0.10nav_proportional_control=9.00nav_integrator_control=0.25nav_derivative_control=0.00nav_integrator_boundary=2.50nav_derivative_boundary=0.00gs_proportional_control=9.52gs_integrator_control=0.26gs_derivative_control=0.00gs_integrator_boundary=0.70gs_derivative_boundary=0.00yaw_damper_gain = 1.0pitch_takeoff_ga= 8.000[brakes]parking_brake = 1 //Parking brake availabletoe_brakes_scale = 0.75 //Brake scalardifferential_braking_scale=1[contact_points]static_pitch= 13.500static_cg_height= 4.750max_number_of_points=10gear_system_type=0 //Fixedpoint.0= 1.000, -28.200, 0.000, -1.355, 9000.000, 0.000, 0.500, 90.000, 0.200, 1.500, 0.900, 0.000, 0.000, 0.000, 0.000, 0.000point.1= 1.000, -9.840, -4.675, -5.750, 3000.000, 1.000, 0.750, 0.000, 0.500, 2.500, 0.850, 0.000, 0.000, 0.000, 0.000, 0.000point.2= 1.000, -9.840, 4.675, -5.750, 3000.000, 2.000, 0.750, 0.000, 0.500, 2.500, 0.850, 0.000, 0.000, 0.000, 0.000, 0.000point.3= 2.000, 0.000, 0.000, 0.000, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000point.4= 2.000, -11.500, 0.000, -1.800, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000point.5= 2.000, -30.000, 0.000, 1.300, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000point.6= 2.000, -18.000, -22.000, -0.560, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5.000, 0.000, 0.000point.7= 2.000, -18.000, 22.000, -0.560, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6.000, 0.000, 0.000point.8= 2.000, -17.700, 0.000, 5.200, 10000.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000[electrical] ;BusType, MaxAmpLoad, MinVoltage BusTypes:0=MainBus,1=AvionicsBus,2=BatteryBus,3=HotBatteryBus,4-7=Generator/AlternatorBus(1-4)flap_motor = 0, 5 , 17.0gear_motor = 0, 5 , 17.0autopilot = 0, 5 , 17.0avionics_bus = 0, 5 , 17.0avionics = 1, 5 , 17.0pitot_heat = 0, 2 , 17.0additional_system = 0, 2 , 17.0marker_beacon = 1, 2 , 17.0gear_warning = 0, 2 , 17.0fuel_pump = 0, 5 , 17.0starter1 = 0, 20, 17.0light_nav = 0, 5 , 17.0light_beacon = 0, 5 , 17.0light_landing = 0, 5 , 17.0light_taxi = 0, 5 , 17.0light_strobe = 0, 5 , 17.0light_panel = 0, 5 , 17.0 //0 Class //1 Longitudinal Position (feet) //2 Lateral Position (feet) //3 Vertical Position (feet) //4 Impact Damage Threshold (Feet Per Minute) //5 Brake Map (0=None, 1=Left, 2=Right) //6 Wheel Radius (feet) //7 Steer Angle (degrees) //8 Static Compression (feet) (0 if rigid) //9 Max/Static Compression Ratio //10 Damping Ratio (0=Undamped, 1=Critically Damped) //11 Extension Time (seconds) //12 Retraction Time (seconds) //13 Sound Type[EFFECTS]wake=fx_wakewater=fx_spraydirt=fx_tchdrtconcrete=fx_sparkstouchdown=fx_tchdwn_s, 1[exits]number_of_exits = 1exit_rate.0 = 0.4 ;Percent per second[Flaps.0]type= 1span-outboard= 0.500extending-time= 5.700system_type= 0damaging-speed= 200.000blowout-speed= 200.000lift_scalar= 1.000drag_scalar= 1.900pitch_scalar= 1.000flaps-position.0= 0.000, 0.000flaps-position.1= 10.000, 0.000flaps-position.2= 25.000, 0.000[vacuum_system]max_pressure=5.150000vacuum_type=2electric_backup_pressure=0.000000engine_map=0,0,0,0[pneumatic_system]max_pressure=18.000000bleed_air_scalar=0.150000[deice_system]structural_deice_type=2[flight_tuning]cruise_lift_scalar =1.000parasite_drag_scalar =1.000induced_drag_scalar =1.000elevator_effectiveness =1.000aileron_effectiveness =1.000rudder_effectiveness =1.000pitch_stability =1.000roll_stability =1.000yaw_stability =1.000elevator_trim_effectiveness =1.000aileron_trim_effectiveness =1.000rudder_trim_effectiveness =1.000[forcefeedback]gear_bump_nose_magnitude=3000 ; 0 - 10000gear_bump_nose_direction=18000 ; 0 - 35999 degreesgear_bump_nose_duration=250000 ; in microsecondsgear_bump_left_magnitude=2700 ; 0 - 10000gear_bump_left_direction=35500 ; 0 - 35999 degreesgear_bump_left_duration=250000 ; in microsecondsgear_bump_right_magnitude=2700 ; 0 - 10000gear_bump_right_direction=00500 ; 0 - 35999 degreesgear_bump_right_duration=250000 ; in microsecondsground_bumps_magnitude1=1300 ; 0 - 10000ground_bumps_angle1=08900 ; 0 - 35999 degreesground_bumps_intercept1=3.0ground_bumps_slope1=0.20ground_bumps_magnitude2=200 ; 0 - 10000ground_bumps_angle2=09100 ; 0 - 35999 degreesground_bumps_intercept2=1.075ground_bumps_slope2=0.035crash_magnitude1=10000 ; 0 - 10000crash_direction1=01000 ; 0 - 35999 degreescrash_magnitude2=10000 ; 0 - 10000crash_direction2=9000 ; 0 - 35999 degreescrash_period2=75000 ; in microsecondscrash_duration2=2500000 ; in microseconds[fuel]LeftMain = -12.000, -4.800, -0.850, 114.000, 3.600RightMain = -12.000, 4.800, -0.850, 114.000, 3.600fuel_type = 2 //Fuel type: 1 = Avgas, 2 = JetAnumber_of_tank_selectors = 1 electric_pump=1[gear_warning_system]gear_warning_available = 0 //Normalpct_throttle_limit = 0.1 //Percent throttle that activates warningflap_limit_idle = 0.0 //Flap angle that activates warning at idleflap_limit_power = 16.0 //Flap angle that activates warning at above idle[GeneralEngineData]engine_type = 5Engine.0 = -2.700, 0.000, 0.000fuel_flow_scalar = 1.120min_throttle_limit = -0.25 //Minimum percent throttle. Generally negative for turbine reversermaster_ignition_switch=1[hydraulic_system]normal_pressure = 3000.0 //PSIelectric_pumps = 0 //no electric pumpsengine_map =1,0,0,0[keyboard_response]//Breakpoint speeds (knots) on the keyboard increments of control surfaces.//Speed at which the incremenet is reduced to 1/2 and 1/8 respectively.elevator = 100, 180aileron = 200, 1000rudder = 200, 1000[LIGHTS]//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit light.0 = 3, -12.00, -23.8, 0.74, fx_navredlight.1 = 3, -12.00, 23.8, 0.74, fx_navgrelight.2 = 3, -27.80, 0.00, 6.7, fx_navwhilight.3 = 2, -12.00, -23.8, 0.74, fx_strobelight.4 = 2, -12.00, 23.8, 0.74, fx_strobelight.5 = 4, -16.50, 0, 3.00, fx_vclight[pitot_static]vertical_speed_time_constant = 1.0 //Increasing this value will cause a more instantaneous reaction in the VSIpitot_heat=1.000000[propeller]thrust_scalar =1.000propeller_type = 0propeller_diameter = 8.800propeller_blades = 3propeller_moi = 19.000beta_max = 45.000beta_min = 15.600min_gov_rpm = 25520.000prop_tc = 0.004gear_reduction_ratio = 17.400fixed_pitch_beta = 0.000low_speed_theory_limit = 80.000prop_sync_available = 0prop_deice_available = 0prop_feathering_available= 1prop_auto_feathering_available= 1min_rpm_for_feather = 700.000beta_feather = 88.000power_absorbed_cf = 0.900defeathering_accumulators_available= 0 prop_reverse_available = 1.000minimum_on_ground_beta = 1.000minimum_reverse_beta = -14.000[Radios]// Radio Type = availiable, standby frequency, has glide slopeAudio.1 = 1Com.1 = 1, 1Com.2 = 1, 1Nav.1 = 1, 1, 1Nav.2 = 1, 1, 0Adf.1 = 1Transponder.1 = 1Marker.1 = 1[Reference Speeds]flaps_up_stall_speed = 61.000full_flaps_stall_speed = 59.000cruise_speed = 130.000max_mach = 0.60max_indicated_speed= 138.000[smokesystem]smoke.0=0.00, -20.00, -19.00, fx_thrush_spray_tip_minussmoke.1=0.00, -20.00, -16.00, fx_thrush_spraysmoke.2=0.00, -20.00, -13.20, fx_thrush_spraysmoke.3=0.00, -20.00, -10.40, fx_thrush_spraysmoke.4=0.00, -20.00, -7.60, fx_thrush_spraysmoke.5=0.00, -20.00, -4.80, fx_thrush_spraysmoke.6=0.00, -20.00, -2.00, fx_thrush_spraysmoke.7=0.00, -20.00, 2.00, fx_thrush_spraysmoke.8=0.00, -20.00, 4.80, fx_thrush_spraysmoke.9=0.00, -20.00, 7.60, fx_thrush_spraysmoke.10=0.00, -20.00, 10.40, fx_thrush_spraysmoke.11=0.00, -20.00, 13.20, fx_thrush_spraysmoke.12=0.00, -20.00, 16.00, fx_thrush_spraysmoke.13=0.00, -20.00, 19.00, fx_thrush_spray_tip_plus[stall_warning]type=1stick_shaker=0[TurbineEngineData]fuel_flow_gain = 0.011inlet_area = 1.000rated_N2_rpm = 33000.000static_thrust = 158.000afterburner_available= 0[turboprop_engine]power_scalar =1.000maximum_torque = 1865.000max_rpm_mechanical_efficiency_scalar=1.000idle_rpm_mechanical_efficiency_scalar=1.000max_rpm_friction_scalar=1.000idle_rpm_friction_scalar=1.000[turn_indicators]//Type: 0=None, 1=Electric Gyro, 2= Vacuum Gyroturn_indicator.0=0,0[Views]eyepoint= -17.3, 0, 4.63 //(feet) longitudinal, lateral, vertical distance from reference datum[WEIGHT_AND_BALANCE]max_gross_weight = 9700.000empty_weight = 4300.000reference_datum_position = 12.424, 0.000, 0.000empty_weight_CG_position = -11.000, 0.000, -2.000max_number_of_stations = 3station_load.0 =2200.000000, -11.000000, 0.000000, 0.000000, Hopperstation_load.1 =170.000000, -17.000000, 0.000000, 0.000000, Pilotstation_load.2=0.000000, 0.000000, 0.000000, 0.000000, Crew ;Moments of Inertiaempty_weight_pitch_MOI = 6939.000empty_weight_roll_MOI = 3000.000empty_weight_yaw_MOI = 8923.000empty_weight_coupled_MOI = 0.000CG_forward_limit= 0.000CG_aft_limit= 1.000------------------------------------------------------------------------------For panel.cfg[Window Titles]Window00=Main PanelWindow01=Radio Stack[Views]VIEW_FORWARD_ZOOM=0.5VIEW_FORWARD_RIGHT_ZOOM=0.5VIEW_RIGHT_ZOOM=0.5VIEW_REAR_RIGHT_ZOOM=0.5VIEW_REAR_ZOOM=0.5VIEW_REAR_LEFT_ZOOM=0.5VIEW_LEFT_ZOOM=0.5VIEW_FORWARD_LEFT_ZOOM=0.5[Window00]file=panel_thrush.bmpwindowsize_ratio=1.000position=4size_mm=1024,768window_pos=0.0,0.0window_size=1.000,1.000visible=1ident=MAIN_PANELgauge00=Cessna208B!Torque,107,659,53,53gauge01=Cessna208B!Propeller-RPM,113,601,54,54gauge02=Cessna208B!ITT-Indicator,181,581,55,55gauge03=Cessna208B!Gas-Generator-RPM,103,716,51,51gauge04=Cessna208B!Fuel-Flow,183,644,51,51gauge05=Schweizer!Airspeed,760,597,76,76gauge06=magnetic_compass!Magnetic-Compass,810,537,40,40gauge07=f6f3_hellcat!Fuel_Quantity,247,641,57,57gauge08=SimIcons!Avionics Icon,594,498gauge09=Cessna208B!Oil-Pressure-Temperature,180,703,50,50gauge10=Schweizer!Altimeter,847,622,77,77gauge11=Mooney_Bravo!Amps,257,706,38,38gauge12=Cessna182ifr!Clock,771,697,51,51gauge13=lear_45.elevator-trim!Lear_45.Elevator-Trim,875,710,22,47gauge14=Cessna!Master_Alt_Bat,53,667,40,44gauge15=Cessna!Avionics Switch,922,707,37,47gauge16=Kingair!Strobe_Light,62,723,26,34gauge17=Kingair!Nav_Light,41,723,26,34gauge18=Cessna208!Panel-Lights,968,722,20,21gauge19=Cessna208!Horizontal-Indicator,587,526gauge20=Cessna208!ADF,299,526gauge21=Cessna208!Attitude,390,526[Window01]background_color=2,2,2size_mm=156,308position=8visible=0ident=RADIO_STACK_PANELgauge00=Bendix_King_Radio!Bendix-King Radio Audio, 0, 262gauge01=Bendix_King_Radio!Bendix-King Radio Nav-Comm 1, 0, 29gauge02=Bendix_King_Radio!Bendix-King Radio Nav-Comm 2, 0, 86gauge03=Bendix_King_Radio!Bendix-King Radio ADF, 0, 142gauge04=Bendix_King_Radio!Bendix-King Radio DME, 0, 180gauge05=Bendix_King_Radio!Bendix-King Radio Xpndr, 0, 217gauge06=Bendix_King_Radio!Bendix-King Radio AP, 0, 0[Default View]X=0Y=0SIZE_X=8192SIZE_Y=5110Day=255,255,255Night=223,104,115Luminous=228,64,64[VCockpit00]size_mm=512,512pixel_size=512,512texture=$enginebackground_color=0,0,0gauge00=Cessna208B!Torque,0,0,90,91gauge01=Cessna208B!Propeller-RPM,99,0,90,92gauge02=Cessna208B!ITT-Indicator,198,0,90,92gauge03=Cessna208B!Gas-Generator-RPM,0,98,90,91gauge04=Cessna208B!Fuel-Flow,197,98,90,91gauge08=f6f3_hellcat!Fuel_Quantity,0,197,107,108gauge09=Cessna208B!Oil-Pressure-Temperature,99,98,90,91gauge10=Mooney_Bravo!Amps,123,203,72,66gauge11=Bendix_King_Radio!Bendix-King Radio Nav-Comm 1,0,312,313,119[VCockpit01]size_mm=512,512pixel_size=512,512texture=$flightinstrbackground_color=0,0,0gauge00=Schweizer!Airspeed,0,0,122,114gauge01=Schweizer!Altimeter,0,120,137,137gauge02=Cessna182ifr!Clock,0,266,106,103gauge03=magnetic_compass!Magnetic-Compass,0,371,128,128gauge04=lear_45.elevator-trim!Lear_45.Elevator-Trim,128,0,44,94

Bob,There were a few elements that needed to be included for the AP to function. Below are two seperate sections that you need to cyt and paste into the existing files more or less replacing all of the original content...MAKE A BACKUP OF YOUR ORIGINAL FILES...Hi. Thanks. What were the specific elements that needed to be added? I see that your smoke coordinates are not right for FSX. They are the FS9 ones. I already have modified mine to fit FSX. I'll try your changes. I appreciate the help. Best regards, Bob.

Hi Old_Doggie. Thanks. The AP now works in the HDG and NAV modes. Best regards, Bob.

Hi Old_Doggie. Thanks. The AP now works in the HDG and NAV modes. Best regards, Bob.

Y/W, it should work in all modes.. lol set alt hold while sprayin a crop. Douglas

Y/W, it should work in all modes.. lol set alt hold while sprayin a crop. Douglas

Thanks. I still don't know what I missed. I've added AP's to a lot of planes and never had this problem. I use the AP to get to the crop fields which are not nearby my home airfield. It makes it a lot easier, (LOL) Regards, Bob.