Concorde Mystery Help

Hi,I mentioned this before in a different forum, but hope that I can get some advise in the Design one.Got FS9.I downloaded ARNZ AIS-AI Concorde as part of my extensive AI fleet (got over 250 airlines from WOAI). I also did some subsonic Concorde flight plans using TTools. Concorde however behaves differently. It often disappears on landing (touch down). It shows in Traffic Board but many times it just flies a weird pattern - usually a straight forward instead of ligning up on landing and acually landing. Once, while watching it in Traffic Board, it did a full flight and actually landed! But often it does not follow the flight plan. I have made sure that al the flight plan legs have plenty of time between arrival and departures. Also, as suggested in the TTools manual, I changed the concorde.air file with the stock B737 file and it definitely improved the situation. Also I reduced the speed and tried different variations. Now aircraft mostly lands and does not disappear. Not always though. Sometimes it appears to be arriving too fast and just vanishes when it touches the runway. Please note that all my other AI aircraft behave just right, and I have made plenty of TTools flight plans. Somehow I think there might be some tweek I need to do in the aircraft file. So if any of you designers can adv what could I possibly do please let me know.The aircrft file is below. Many thanks[General]performance=For detailed specs visit www.concordesst.com atc_type=CONCORDE atc_model= editable=0 [Views]eyepoint=56.671383, -1.281578, 9.188915 [weight_and_balance]// ACM V2.0max_gross_weight = 407154empty_weight = 172671reference_datum_position = 38.2, 0, 0empty_weight_CG_position = -50.333, 0, 0empty_weight_pitch_MOI = 29000118empty_weight_roll_MOI = 26000118empty_weight_yaw_MOI = 7406663empty_weight_coupled_MOI = 0max_number_of_stations = 9station_load.0 = 0.000000,0.000000,0.000000,0.000000station_load.1 = 3342.000, -29.000, 0.000, 0.000station_load.2 = 300.000, 8.000, 0.000, 0.000station_load.3 = 500.000, -4.000, 0.000, 0.000station_load.4 = 2562.000, -82.000, 0.000, 0.000station_load.5 = 2966.000, 18.000, 0.000, 0.000station_load.6 = 2966.000, 2.000, 0.000, 0.000station_load.7 = 4296.000, -28.000, 0.000, 0.000station_load.8 = 6006.000, -53.000, 0.000, 0.000[lights]//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landinglight.0 = 3, -84, -42, -6.5, fx_navredhlight.1 = 3, -84, 42, -6.5, fx_navgrehlight.2 = 3, -139.87, 0, 2.14, fx_navwhihlight.3 = 2, -88, -42, -6.5, fx_strobehlight.4 = 2, -88, 42, -6.5, fx_strobehlight.5 = 2, -139.88, 0, 2.76, fx_strobehlight.6 = 1, -26.31, 0, 5.98, fx_beaconhlight.7 = 1, -43.76, 0, -6.77, fx_beaconb[GeneralEngineData]//0=Piston, 1=Jet, 2=None, 3=Helo-Turbine, 4=Rocket, 5=Turbopropengine_type = 1fuel_flow_scalar = 1.000engine.0 = -56.000, -19.250, -1.000engine.1 = -56.000, -15.250, -1.000engine.2 = -56.000, 15.250, -1.000engine.3 = -56.000, 19.250, -1.000min_throttle_limit=-0.469910[effects]dirt = fx_tchdrtconcrete = fx_sparkstouchdown = fx_tchdwn, 1[fuel]//Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)fuel_type = 2number_of_tank_selectors = 1Center1 = -15.2, 0, 0, 7695, 0Center2 = -110, 0, 4, 3479, 0LeftMain = -52.58, -14.6, -4.5, 10173, 0RightMain = -52.58, 14.6, -4.5, 10173, 0electric_pump=0[contact_points]static_pitch = 1.3static_cg_height = 17max_number_of_points = 7point.0 = 1, 4.7243, 0, -18.6862, 1242.896, 0, 1.9, 40, 0.3, 0.5, 0.8, 6.5, 6.5, 0, 270, 275point.1 = 1, -116.666, 0, -4, 1042.896, 0, 0.6, 0, 0.1, 0.1, 0, 4, 4, 0, 270, 275point.2 = 1, -54.1568, -13, -17.6924, 1587.896, 1, 1.9, 0, 0.8, 2, 1, 9, 9, 2, 270, 275point.3 = 1, -54.1775, 13, -17.6911, 1587.896, 2, 1.9, 0, 0.8, 2, 1, 9.4, 9.4, 3, 270, 275point.4 = 2, -54.167, -42, -7, 1274.433, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0point.5 = 2, -54.167, 42, -7, 1274.433, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0point.6 = 2, -116.667, 0, -4, 1574.803, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0gear_system_type=0[keyboard_response]elevator = 150.000000, 250.000000aileron = 150.000000, 250.000000rudder = 150.000000, 250.000000[forcefeedback]gear_bump_nose_magnitude = 3000gear_bump_nose_direction = 18000gear_bump_nose_duration = 250000gear_bump_left_magnitude = 2700gear_bump_left_direction = 35500gear_bump_left_duration = 250000gear_bump_right_magnitude = 2700gear_bump_right_direction = 00500gear_bump_right_duration = 250000ground_bumps_magnitude1 = 1300ground_bumps_angle1 = 08900ground_bumps_intercept1 = 3.0ground_bumps_slope1 = 0.20ground_bumps_magnitude2 = 200ground_bumps_angle2 = 09100ground_bumps_intercept2 = 1.075ground_bumps_slope2 = 0.035crash_magnitude1 = 10000crash_direction1 = 01000crash_magnitude2 = 10000crash_direction2 = 9000crash_period2 = 75000crash_duration2 = 2500000[airplane_geometry]//ACM_AREAW1// 0,0,0,27.7138,1.4220,1.4220,2.0313,28.3596,2.8447,2.8447//ACM_AREAW2// 4.0626,29.0053,4.2670,4.2670,6.0939,29.6508,5.6894,5.6894,8.1253,30.2966//ACM_AREAW3// 7.1118,7.1118,10.1569,30.9423,8.5340,8.5340,12.1883,31.5881,9.9568,9.9568//ACM_AREAW4// 14.2194,32.2336,11.3788,11.3788,16.2511,32.8795,12.8016,12.8016,18.2824,33.5251//ACM_AREAH1// 0,0,0,0,0,0,0,0,0,0//ACM_AREAH2// 0,0,0,0,0,0,0,0,0,0//ACM_AREAH3// 0,0,0,0,0,0,0,0,0,0//ACM_AREAH4// 0,0,0,0,0,0,0,0,0,0//ACM_AREAV1// 0,0,0,10.5642,1.1734,1.1734,0.2069,9.9259,2.3475,2.3475//ACM_AREAV2// 0.4138,9.2880,3.5213,3.5213,0.6208,8.6498,4.6950,4.6950,0.8277,8.0115//ACM_AREAV3// 5.8688,5.8688,1.0348,7.3734,7.0429,7.0429,1.2417,6.7353,8.2166,8.2166//ACM_AREAV4// 1.4486,6.0970,9.3905,9.3905,1.6555,5.4587,10.5642,10.5642,1.8624,4.8207//ACM_CAREAW1// 6.4008,6.4008,22.9981,28.5410,7.1118,7.1118,24.0139,29.2796,7.8232,7.8232//ACM_CAREAW2// 25.0296,30.0181,8.5340,8.5340,26.0452,30.7567,9.2454,9.2454,27.0610,31.4951//ACM_CAREAW3// 9.9568,9.9568,28.0767,32.2336,10.6680,10.6680,29.0923,32.9724,11.3788,11.3788//ACM_CAREAW4// 30.1081,33.7108,12.0902,12.0902,31.1238,34.4495,12.8016,12.8016,32.1394,35.1879//ACM_CAREAH1// 0,0,0,0,0,0,0,0,0,0//ACM_CAREAH2// 0,0,0,0,0,0,0,0,0,0//ACM_CAREAH3// 0,0,0,0,0,0,0,0,0,0//ACM_CAREAH4// 0,0,0,0,0,0,0,0,0,0//ACM_CAREAV1// 0,0,2.6410,7.9232,1.1734,1.1734,2.8480,7.7076,2.3475,2.3475//ACM_CAREAV2// 3.0550,7.4920,3.5213,3.5213,3.2620,7.2764,4.6950,4.6950,3.4688,7.0608//ACM_CAREAV3// 5.8688,5.8688,3.6758,6.8452,7.0429,7.0429,3.8828,6.6296,8.2166,8.2166//ACM_CAREAV4// 4.0899,6.4140,9.3905,9.3905,4.2968,6.1984,10.5642,10.5642,4.5036,5.9828wing_area = 3926.000wing_span = 84.000wing_root_chord = 90.925wing_dihedral = 3.999wing_incidence = -1.300wing_twist = 1.700oswald_efficiency_factor = 0.832wing_winglets_flag = 0wing_sweep = 55.000wing_pos_apex_lon = 20.840wing_pos_apex_vert = 0.800htail_area = 0.000htail_span = 0.000htail_pos_lon = 0.000htail_pos_vert = 0.000htail_incidence = 0.000htail_sweep = 0.000vtail_area = 365.000vtail_span = 34.660vtail_sweep = 10.000vtail_pos_lon = -125.000vtail_pos_vert = 26.12elevator_area = 344.400aileron_area = 344.400rudder_area = 112.000elevator_up_limit = 19.000elevator_down_limit = 19.000aileron_up_limit = 23.500aileron_down_limit = 23.500rudder_limit = 30.000elevator_trim_limit = 15.000spoiler_limit = 40.000aileron_to_spoileron_gain = 20.000min_ailerons_for_spoilerons = 0.800min_flaps_for_spoilerons = 0.000spoilerons_available = 0[electrical]max_battery_voltage = 24generator_alternator_voltage = 30max_generator_alternator_amps = 70electric_always_available = 0flap_motor = 0, 5, 17gear_motor = 0, 5, 17autopilot = 0, 5, 17avionics_bus = 0, 10, 17avionics = 1, 5, 17pitot_heat = 0, 2, 17additional_system = 0, 20, 17marker_beacon = 1, 2, 17gear_warning = 0, 2, 17fuel_pump = 3, 6, 17starter1 = 3, 20, 17starter2 = 3, 20, 17starter3 = 3, 20, 17starter4 = 3, 20, 17light_nav = 0, 5, 17light_beacon = 0, 5, 17light_landing = 0, 5, 17light_taxi = 0, 5, 17light_strobe = 0, 5, 17light_panel = 0, 5, 17fuel_transfer_pump = 0, 10, 17[jet_engine]thrust_scalar=1.000 [TurbineEngineData]fuel_flow_gain=0.0020 //4.2 feet diameter 26.4?inlet_area=12.400 //RPM for hydraulics and generators-//Air file expects 29920.00 for full power-//Does not affect performance:rated_N2_rpm=29920.000 //Real-world RPM://rated_N2_rpm=8530.000//Thrust does not include reheat configured in air file: static_thrust=30400.000 afterburner_available=1 reverser_available=1 [Reference Speeds]//knots (true) (used by AI and ATC):flaps_up_stall_speed=140.000 full_flaps_stall_speed=110.000 cruise_speed=480.000 max_indicated_speed=380.000000max_mach=0.92[autopilot]autopilot_available=1 flight_director_available=1 default_vertical_speed=1200.000000 autothrottle_available=1 autothrottle_arming_required=1autothrottle_takeoff_ga=1autothrottle_max_rpm=106.000000pitch_takeoff_ga=13.500000 use_no_default_pitch=1use_no_default_bank=1default_pitch_mode=0default_bank_mode=0max_pitch=10.000000max_pitch_acceleration=1.000000max_pitch_velocity_lo_alt=2.000000max_pitch_velocity_hi_alt=1.500000max_pitch_velocity_lo_alt_breakpoint=20000.000000max_pitch_velocity_hi_alt_breakpoint=28000.000000max_bank=25.000000max_bank_acceleration=1.800000max_bank_velocity=3.000000max_throttle_rate=0.100000nav_proportional_control=9.000000nav_integrator_control=0.250000nav_derivative_control=0.000000nav_integrator_boundary=2.500000nav_derivative_boundary=0.000000gs_proportional_control=9.520000gs_integrator_control=0.260000gs_derivative_control=0.000000gs_integrator_boundary=0.700000gs_derivative_boundary=0.000000yaw_damper_gain=0.000000[pitot_static]vertical_speed_time_constant=2[direction_indicators]direction_indicator.0=3,0 [Radios]Audio.1=1 Com.1=1,1 Com.2=1,1 Nav.1=1,0,1 Nav.2=1,0,0 Adf.1=1 Transponder.1=1 Marker.1=1 [Flaps.0]type=1span-outboard=0.125extending-time=25system_type=1damaging-speed=270.000blowout-speed=325.000lift_scalar=1.000drag_scalar=1.000pitch_scalar=1.000flaps-position.0=2.000, 0.000flaps-position.1=5.000, 0.000flaps-position.2=8.000, 0.000[flight_tuning]cruise_lift_scalar=1.000 pitch_stability=1.0 roll_stability=1.0 yaw_stability=1.0 parasite_drag_scalar=1.000 induced_drag_scalar=1.000 elevator_effectiveness=1.000 aileron_effectiveness=1.000 rudder_effectiveness=1.000 pitch_stability=1.0 roll_stability=1.0 yaw_stability=1.0 elevator_trim_effectiveness=1.000 aileron_trim_effectiveness=1.000 rudder_trim_effectiveness=1.000. [brakes]toe_brakes_scale=0.442518parking_brake=1[gear_warning_system]gear_warning_available=0pct_throttle_limit=0.099976flap_limit_power=25.496622flap_limit_idle=5.042029[hydraulic_system]electric_pumps=0engine_map=1,1,1,1normal_pressure=3000.000000[stall_warning]type=1[attitude_indicators]attitude_indicator.0=1[turn_indicators]turn_indicator.0=1,0[ACFU]title=ARNZ AIS CONCORDEsim=concordemodel=panel=sound=checklists=ui_manufacturer=ARNZ AISui_type=Concordeatc_heavy=1visual_damage=0AC_Model=ARNZ_AIS_CONC[FLTSIM.0]title=ARNZ AIS CONCORDE British Airwayssim=concordemodel=panel=sound=checklists=texture=baatc_id=G-BOACatc_flight_number=1ui_manufacturer=ARNZ AISui_type=Concordeui_variation=British Airwaysdescription=AISatc_heavy=1atc_airline=SPEED BIRDatc_parking_codes=BAWatc_parking_types=GATE[FLTSIM.1]title=ARNZ AIS CONCORDE Air Francesim=concordemodel=panel=sound=checklists=texture=afatc_id=F-BTSCatc_flight_number=1ui_manufacturer=ARNZ AISui_type=Concordeui_variation=Air Francedescription=AISatc_heavy=1atc_airline=AIR FRANCEatc_parking_codes=AFRatc_parking_types=GATE