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Dash8-200/300 - Navigation DME HOLD SWITCH (alternate action) PUSH - Switchlight illuminates - The frequency for DME operation is held by the DME receiver while its associated NAV controller is re-selected to another frequency. TAS DISPLAY BUTTON (momentary action) PUSH - True airspeed display will momentarily replace the SAT display on the advisory display unit.
Dash8-200/300 - Navigation SYSTEM DESCRIPTION General Navigation receivers include dual combined VOR/ILS receivers, dual DME receivers, dual ADF receivers and two flight management systems (FMS). The VOR/ILS, ADF and FMS are controlled by their individual control panels on the centre console and glareshield panel. The DME frequency is tuned simultaneously with its respective VOR receiver selection.
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Dash8-200/300 - Navigation VHF NAV Dual VHF navigation systems provide reception of VOR, localizer, glide-slope and marker- beacon signals. Two NAV control heads located on the glareshield control all frequencies. Each control head provides active frequency selection, standby frequency selection and selection of frequencies from programmable channels.
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Dash8-200/300 - Navigation circuits measure the elapsed time between the transmission and the reception of the echo. The indicator with the radar is a plan-position indicator (PPI) type which presents a cross sectional picture of the storm as though viewed from above.
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Dash8-200/300 - Navigation FSBY (forced standby) The FSBY is an automatic, non-selectable radar mode that inhibits the transmitter on the ground to eliminate the X-band microwave radiation. The indicator is wired to the weight-on- wheels (WOW) switch. When the aircraft is on the ground the transmitter and antenna scan are inhibited;...
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Dash8-200/300 - Navigation Extreme caution is recommended in any attempt to analyse weather in these cyan areas. The radar cannot display an accurate picture of what is in these areas. Cyan areas should be avoided. TGT target The TGT button is an alternate-action switch that enables and disables the radar target alert feature when in the WX or FP modes.
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Dash8-200/300 - Navigation Gain The GAIN knob is a rotary control and push/pull switch used to control the receiver gain. Minimum gain is with the control at its full counter clockwise (CCW) position. Gain increases, as the control is rotated cw from full ccw. At full clockwise (cw) position, the gain is at maximum.
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Dash8-200/300 - Navigation Normal operations - power-up procedures To power-up the Primus 660 weather radar system ensure the function switch is in the OFF position, GAIN control set to the preset position, and TILT control set to +15 degrees with the knob pushed IN.
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Dash8-200/300 - Navigation flight director and autopilot functions. A GPS sensor provides the capability to conduct GPS- only non-precision approaches. Fuel flow data from the fuel flow sensors provide the inputs necessary to integrate real time fuel management information with the navigational functions. During flight the FMS automatically updates the fuel on board and gross weight.
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Dash8-200/300 - Navigation • Flight above 73 degrees north latitude or below 60 degrees south latitude using the FMS may be conducted only when magnetic variation is input manually into the system or an alternate true heading source is used.
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Dash8-200/300 - Navigation Normal Procedures System Annunciators Glareshield annunciator/switching panel Waypoint alert annunciator (W/P ALERT) Illuminates prior to automatic leg change or on arrival the TO waypoint. Message annunciator (MSG) Illuminates in conjunction with the message advisory light on the CDU.
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Dash8-200/300 - Navigation Checks and initialisation Flight guidance controller Navigation selector Press NAV SEL to select which EHSI is to display navigation data. NOTE: RNAV bearing-to-waypoint may be displayed EHSI’s selecting RNV1 RNV2 position on the BRG selector knob on the EFIS controllers.
Dash8-200/300 - Navigation FMS control display unit Flight plan key FPL Press FPL key to access flight planning mode. Enter desired waypoints for the planned flight. CPY RTE line select key Press CPY RTE line select key to access previously stored flight plan line select key route.
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Dash8-200/300 - Navigation To couple the flight director to FMS lateral guidance FLIGHT GUIDANCE CONTROLLER HSI selector (HSI SEL) Press to select appropriate side. NOTE: RNAV #1/RNAV #2 bearing to waypoint may be displayed on the EHSI's by selecting the RNV1 or RNV2 position of the BRG selector on the EFIS controller.
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Dash8-200/300 - Navigation Abnormal procedures THE FMS CDU AND GLARESHIELD MESSAGE (MSG) ANNUCIATORS ILLUMINATE FMS CDU message key (MSG) Press to display message page. Message requires no action Press MSG key again to acknowledge message and return to previous page.
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