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G650 Avionics
G650 Styudy Guide
| Question | Answer |
|---|---|
| Modular Avionics Units (MAUs) are: | the main aircraft computers and processors that control most of the avionics related applications on the aircraft. |
| Describe the function of the TCS (touch control steering) button: | The TCS button when depressed and held, momentarily interrupts the autopilot. |
| Which DUs (diplay units) are referred to as multi-function displays? | DU2 and DU3. |
| Which DU can be failed for dispatch? | DU 3. |
| The limitation that is placed on the "DISPLAY SYSTEM CONTROL" panel is: | DISPLAY SYSTEM CONTROL SWs are for ground use only (i.e. for MEL dispatch ability). |
| The primary purpose of the SMC is: | to display the SFD (standby flight display). |
| Name occasions when the SFD is automatically displayed. | loss of a PFD, loss of either SFD, unusual attitude, BPTs (break power transfers), instrument comparator issues. |
| Can you dispatch with a failed CCD? | You can dispatch with failure of one or both CCDs, |
| What part of the displays is the cursor restricted from entering? | The cursor is restricted from entering the ADI or SVS. Otherwise it can move anywhere n a display window on its associated DUs. |
| What happens when both cursors are selected to the same DU? | The last cursor wins and the first cursor is removed from the display. |
| What is the purpose of the GP (guidance panel / FGP or flight guidance panel)? | The GP provides most of the controls for operation of the AFCS. |
| An ATC cleared altitude should always be set into the GP preselect window by whom? | the PNF or Pilot Monitoring. |
| Name some functions of the MCDU? remember that National Public Radio Seriously Sucks! | NPRS: N = Navigate, P = Performance, R = Radio, S = SSPCs. The MCDU allows provides the forum for the flight crew to interface with the SSPC / SPDS. |
| What does RAAS stand for? | Runway Awareness Advisory System. Runway advisories can be inhibited by depressing the RAAS INHIBIT switch. |
| What is the source of information to the DUs? | 3 MAUs, and 3 MCDUs and other sensors such as ADSs, EECs, IRUs, etc. |
| How are pilot entries displayed on the MCDUs? | Pilot entries on the MCDUs are displayed in LARGE CHARACTERS. |
| How are configuration mismatches displayed on MCDUs? | Inverse Video (i.e. highlighted) |
| How can a default value be restored in the MCDU during the performance initialization? | Generally by using the DELETE function on the appropriate LSK. |
| Name functions controlled and monitored from the UTIL menu of the SMC. | Tire pressure, CPCS Semi-Mode control, refuel control, engine oil quantity, hydraulic fluid quantity, WX Radar, SFD, ETC... |
| The LSK adjacent to the CAS/MACH display on the PFD ADI menu toggles the airspeed tape between calibrated airspeed and mach number only when the aircraft is above what altitude? | 25,000 feet. |
| The primary symbol used to control the aircraft with the HUD is? | the FPV (flight path vector). The FPV is displayed as a green circle with one green line on top and one on each side of the circle. The FPV represents where the mass of the aicraft is going. NOTE: caged FPV is open on the bottom. |
| What is a lateral discontinuity? | a lateral gap in the flight plan. |
| How do you know if a chart is Geo-referenced? | a Geo-referenced chart has white or green icon in the right corner of the charts title bar, which enables the aircraft's actual position to be displayed (as a green airplane symbol) |
| While checking the SENSOR page of the SMC, what selection would you expect to see for FGC and AT? | During power up the FGC and AT alternate between 1 and 2 every flight. |
| An amber MAG2 on both PFDs indicates what? | both pilots are using the same attitude and heading source. In this case both pilots are using IRS2 for heading and attitude information. |
| What does an amber RA2 on both PFDs indicate? | both pilots flight instruments are receiving radar altimeter information from the same source. |
| What is meant when ALT is boxed in the cyan on the ENG ALT CTRL page of the SMC? | It indicates the engine is operating in the alternate control mode (i.e. the EEC is controlling the speed of the LP Compressor - N1) |
| When are V speeds displayed with an asterik on the FLT REF page of the SMC? | Once the FMS receives the necessary data for computation. Note: when all FMS parameters for takeoff are met, the speeds displayed on the SMC automatically box, the asterisks are removed and the speeds are displayed on both PFD airspeed tapes. |
| How does the FMS compute Vref speed? | Vref speed is based solely on flap handle position, aircraft weight, aircraft altitude. |
| What does it mean to preview a course? | The PREVIEW prompt on the SMC allow the crew to select a short range NAV source for display on the HSI even though the FMS (long range navigation) is still the active navigation source. |
| What do the top T and the bottom inverted T represent on the combiner during the HUD test? | The HUD Ts respresent the upper and lower limit of data display. |
| Normal display location of the primary engine instruments and CAS is? | with 2/3 window formqt selected for DU2 and DU3, primary engine instrument information is always displayed in the upper 1/6 window on DU2. CAS information is normally displayed in the upper 1/6 window on DU3. |
| What is the restriction on selection of full windows on DU2 and DU3? | The full window cannot be selected on both DU2 and DU3 at the same time. |
| What is the source of the HUD symbols? | the HUD computer. |
| What is the source of the EVS image? | the EVS camera uses infrared technology and is optimized to detect runway lighting. |
| How do you know that you have not placed the combiner in the correct operating position? | An "ALIGN HUD" message appears on the combiner display.If this occurs, reposition the combiner glass and allow it to snap into the detent. Do not use the HUD if the "ALIGN HUD" message continues to be displayed. |
| What is NUC? | Non Uniformity Correction. NUC is a claibrtation process that results in a cleaner picture and occurs during camera power up,flaps selected from 0 to 20 deg., or manual NUC selected. |
| How do you know when the EVS image is available for display? | After camera cool down, the system performs a NUC check, then FLIR flashes on the combiner and goes steady or EVS A, H, or L is displayed. If the aircraft is cold or hot soaked, cool down may take up to 35 minutes. |
| HUD symbols are describes as being either conformal or non-conformal. What is the difference. | A conformal symbol has a real world counterpart (e.g. the horizon line represents the horizon degree for degree). The altitude dial is considered non-conformal since it does not represent anything in the real world. |
| Aicraft Reference Symbol is synonymous with? | the Boresight. They are one and the same. |
| What does the aircraft referenc3 symbol (or Boresight symbol) represent on the HUD? | Boresight is the projected centerline of the aircraft. |
| Why does he horizon line flash on the HUD at nose high and nose low attitudes? | to indicate it is no longer conformal. |
| What is the difference between the uncaged and caged modes on the HUD? | In the uncaged mode, the FPV is free to roam horizontally and vertically. In the caged mode, the FPV is free to move vertically; however, it is locked in the horizontal center. This is necessary to keep the FPV from drifting off the lateral limits of the |
| Describe the three different levels of EVS camera gain. | Auto, H for high gain, and L for low gain. Select Auto if you want the camera to automatically adjust the gain, H for low visibility, and L for night VMC or day with smog. Indications of you selection appear on the upper left portion of the combiner: EVS |
| Describe operation of the EVS WSHLD HT switch. | When selected, the switchlight indicates blue ON and two minutes of continuous heating is applied to the EVS windshield. Otherwise, operation is automatic if the aircraft is airborne with cowl ant-ice on. |
| How is heat depicted on the EVS image? | Hotter items from the IR camera are depicted on the FLIR synoptic video page as lighter while items with less heat are darker. Hotter = lighter/brighter; Cooler = darker images. |
| Describe factors that affect EVS performance. | Thick clouds, thermal crossover, mis-alignment, blooming. |
| How can you increase your chances of seeing approach and runway lights with EVS in low visibility. | Make sure the lights are set to full bright before commencing the approach and select EVS H gain. |
| What are the requirements for descending below DA with EVS? | You need EVS lights to descend below DA and you need naked eye visual cues without the aid of EVS to descend below 100 HAT in order to continue and land. |
| A flight director or autopilot with vertical guidance, either ILS or FMS vertical path (GP or VGP), is required for all IMC EVS approaches. How do you determine if an obstacle free path is present? | An obstacle free path is present if a runway is served with a instrument approach to a Descision Altitude (DA). |
| At what altitude does the airport symbol normally appear on the HUD? | 2,000 feet above airport altitude. |
| When does the runway symbol replace the airport symbol on the HUD? | At 350 ft. radio altimeter (RA) the runway symbol joins the airport symbol. At 325 ft. the airport symbol disappears. The runway symbol disappears at 60 ft. RA. |
| When does the flare cue appear? | The flare cue appears at 100 ft. RA and moves upward as the aircraft approaches the ground and provides flare guidance. |
| What is provided on the HUD unusual attitude display to prevent you from over stressing the aircraft during the recovery? | G-load digital read out. |
| What is RNP? | Required navigation performance is the accuracy in NM that is required for navigation in the area the aircraft is flying. RNP affects CDI sensitivity. i.e. lower RNP equiates to greater CDI sensitivity. |
| What is EPU? | Estimated position uncertainty is the calculated estimate of accuracy of navigation equipment on-board the aircraft. If EPU exceeds RNP, the numbers are highlighted by a cautionary amber overlay and the CDI needle turns amber. |
| What does the magenta dashed line extending from the nose of the aircraft to the compass arc represent on the map display? | IRS track. The actual track from the IRS. |
| The alerting function is performed by the Monitor Warning Function (MWF), installed within the MAU. How is this labeled on the SMC? | FWC for Fault Warning Computer |
| How are CAS messages arranged? | Chronologically with most recent on top. |
| What color messages can be scrolled off the CAS diusplay? | Blue and Amber cas messages can be scrolled, Red messages cannot be scrolled. |
| What happens when a Red or Amber message becomes active? | Amber & Red messages are displayed in INVERSE VIDEO, an aural alert is sounded (2 chimes, 3 chimes). The red W or amber C illuminates on the Master Caution. When the annunciator button is pushed, the annunciator extinguishes, tone is silenced, and the mes |
| What happens when a blue message becomes active? | A new blue message flashes for 5 seconds and then displays normally, the blue message aural alert is sounded (1 chime). New messages are placed at the top of the blue stacked messages. |
| The difference between red and amber cas messages is? | Red relates to injury or loss of life. Amber relates to damage or loss of equipment. |
| What color CAS message means do not dispatch? | Amber |
| Depressing the GPWS ORIDE switch on the Master Warning Panel inhibits all GPWS aural warninghs and cautions except for what? | Windshear. |
| In what kind of situation would you want to depress the GPWS ORIDE switch? | use the GPWS ORIDE switch to inhibit alerts while flying in day VFR approach in areas of high terrain; also for ditching or landing gear up. |
| What callouts are inhibited with selection of the FAD ALT switch? | All advisory altitude callouts during approach and landing except for minimums and bank angle. |
| When the Master Warning INHIBIT switch is depressed, which aural tones are inhibited? | Aural tones for most amber and blue CAS messages. |
| When is INHIBIT automatically deselected? | On takeoff o go-around at 400 feet AGL if the landing gear is retracted. After landing, it remains on until shutdown unless manually cancelled. |
| When would the pilots PFD automatically be placed on DU2? | Failure of DU1 or failure of AGM 1. |
| When would the copilots PFD automatically be place on DU3? | Failure of DU4 or failure of AGM 4. |
| Describe AGM assignments? | Each AGM controls the data and graphics for it's respective DU. |
| What would a big red X indicate on a DU? | Failure of the AGM or loss of data. |
| What would be indicated if a DU had a black display? | DU has failed or is unpowered. |
| What is the purpose of the DISPLAY SYSTEM CONTROL switches? | is to allow the aircraft to dispatch with the failure of a single AGM. |
| With the airplane on the ground, if AGM 1, 2, or 4 fails, selecting the corresponding DISPLAY SYSTEM CONTROL switch to the ALT position causes what to occur? | DU3 will red X and the DU associated with the failed AGM receives graphics through AGM primary, secondary, and tertiary bus architecture from one of the remaining AGMs. |
| What happens if a DISPLAY SYSTEM CONTROL switch is selected to off on the ground? | Power is removed from the DU and the display goes black. |
| What happens if a DISPLAY SYSTEM CONTROL switch is selected to off during flight? | Nothing. |
| Which DUs are considered most important? | In terms of hierarchy, PFDs are most important followed by Engine Instruments and then CAS. |
| If DU1 fails and is subsequently rgained by performing the DU Failure procedure in the QRH, the PFD comes back on DU1 and also remains on DU2. How can you unlatch the display and regain your MAP or synoptic? | In flight hold the SMC's 2/3 switch in the depressed position for 3 seconds. |
| With Du2 and DU3 failed, how would you replace one PFD with a synoptic page? | First unlatch the DUs by holding the 2/3 switch on the SMC on the depressed position for 3 seconds. Then select the MAP button on the side you want the synoptic display followed by selection of the synoptic. |
| What happens when the pilot engages the autopilot with the AP switch on the FGP? | One channel of the autopilot is connected to the autopilot system servos that move the control wheel and column in much the same way as the pilot. |
| What tone is associated with autopilot dis-engagement? | 3 tone chime "low-HIGH-low". |
| The autopilot is fail operational or fail passive. What does that mean? | If one channel fails, it automatically switches to the other channel. |
| What happens when the PFD CMD button is pressed to change which PFD is coupled to the FGC? | All lateral and vertical modes are cancelled except for PIT and ROL hold modes. The autopilot does not disengage. |
| When engaged on an ILS approach and below 1200 feet RA, both green triangles are illuminated on the PFD CMD switch. What does this mean? | Both navigation receivers' data is being blended by the FGC. |
| Describe the methodology behind flight mode annunciations on the PFD. | Green modes are located on the right side of the mode window. White modes are located on the left side of the mode window. Green modes indicate the what is engaged/active. White modes indicate the armed mode.When a mode transitions from armed to engaged, |
| What muty the source of navigation be when selecting VNAV? | FMS. Since all VNAV vertical modes are based on FMS ltitude and/or constraints, FMS must be the selected NAV source. |
| What is FLCH mode? | In all cases FLCH modes are speed hold modes (IAS/MACH), meaning the aircraft changes pitch to maintain whatever pitch speed is being displayed in the GPs speed window. |
| How does the climb or descent rate vary with FLCH? | Vertical rate varies depedning on whether the altitude change is less than or greater than 6,000 feet. i.e. less than 6,000 ft. uses a throttle setting proportional to the amount of climb or descent. Greater than 6,000 ft. uses full power or idle. |
| What is the purpose of the LOW BANK switch? | is used to toggle between high bank and low bank while the engaged lateral mode is Heading Select. |
| When VGP is the engaged vertical mode, what is the effect of any altitude set in the GP's altitude preselect window? | It will be ignored by the AFCS just as in the case of an ILS approach. |
| What happens when the altitude hold button is pressed. | If ALT is not active the vertical mode is immediately changed to ALT, the green cue light illuminates and the altitude that existed at the instant the button was pressed will be held. If ALT is active, ALT hold is deselected and the aircraft goes into PIT |
| When is autothrottle retard mode activated? | RA less than 50 feet with landing down. |
| What is the indication of normal AT disengagement? | AT1 or AT2 flashes amber for 5 seconds and a 3 chime aural tone (low-low-low) sounds. |
| What does the thrust director represent? | the thrust director represents the difference between the EPR command bug (actual EPR) and EPR target bug. |
| True/False: the GPS is capable of SBAS or WAAS signals which enable the G650 to execute Localizer Performance with Vertical Guidance (LPV) approaches. | True. |
| What are long range sensors on the G650? | 2 GPS and 3 IRUs. Hybrid IRS's are the primary source of navigation input to the MCDUs. IRUs receive GPS input which greatly improves accuracy and reduces drift rate. If both GPS's fail or the intire GPS network goes down, the FMS or MCDU uses a performan |
| What are the primary short range navigation receivers on the G650? | VOR/DME, DME/DME. |
| Where is the navigation sensor currently selected for use displaYED on the MCDU? | PROGRESS page 1. |
| What should be considered during preflight and prior to commencing an approach? | The MEL specifies the minimum equipment required for conducting approaches with specific RNPs. |
| What does the "U" indicate on the position sensor page of the FMS? | It indicates the sensor is being used for navigation. |
| What kind of information do IRUs provide? | Using positional changes detected on each axis, a microprocessor within the IRU calculates position, heading, attitude, and velocity. |
| Following shutdown, what indications would you have if you forgot to select the IRUs to OFF? | Respective amber ON BAT lights illuminate on the IRS Mode Select panel as well as an ON BATT light in the Security Ground Service Panel. |
| What would an amber HDG or ATT comparator warning indicate on your PFD? | A heading or attitude different from the other pilots. |
| What would a red HDG FAIL and red ATT FAIL annunciations indicate on the PFD? | IRS failure. |
| What is the default heading and attitude reference for eacgh SFD? | Attitude Heading Reference System (AHRS) unit and magnetometer. AHRS = attitude; Magnetometer = heading. |
| True / False: if the aircraft is in-air and the onside selected heading source becomes invalid, the SMC automatically switches to the next valid source. | True. |
| How can you select another heading reference for the SFD? | By pressing the M on the BRT knob and selecting either HDG 1, 2, or 3 (IRS 1, 2, or 3). SFD default heading source is STBY (magnetometer)but you can select IRS 1, 2, or 3. |
| Describe the purpose of the ADS? | The ADS system measures the pressure and temperature of the outside air and supplies this data to using systems. Processed air data provided by ADCs include things like side slip, calibrated airspeed, mach number, AOA, pressure altitude, vertical speed, a |
| Why are the TAT probes aspirated by bleed air on the ground? | to improve accuracy of the temperature reading. |
| Which audio control panels work down to emergency batteries. | All three. |
| What do the letter A, R, M, or V represent next to the nav frequency on the MCDU? | A stands for automatic. R means the frequency has be remotely tuned. M indicates the frequency can only be tuned on the MCDU Radio page (i.e. FMS TUNE selected off on the sub-level page. A V says that automatic tuning is suspended or inhibited because you |
| What is the normal operating mode for HF radios? | Simplex mode (SIMPL) and Upper sideband voice (UV). |
| What is the difference between downlink and uplink messages? | Messages from aircraft to ground are downlink messages. Messages from the ground to the aircraft are uplink messages. Downlink messages are blue. Uplink messages are green. |
| What is the difference between ATC Comm and AOC? | ATC Comm is datalink communications or CPDLC. AOC or Aeronautical Operational Communications refer to everything else, all other communications. |
| What's the ADS function? | ADS permits ATC to request the aircraft to automatically transmit (using a datalink connection) aircraft data derived from on-board navigation systems (FMS). LOA is required. |
| What is CPDLC? | Controller Pilot Data Link Communications is an Air Traffic Service application that permits pilots and ATC to exchange messages using a data link connection. |
| Describe some features of the G650 RDR 4000. | It controls antenna scan, collects weather and terrain information and stores it in 3D memory. Operational modes include ground mapping, turbulence detection, and predictive windshear. |
| What is primary and secondary weather and how is it depicted? | Primary Wx is defined as the weather along your flight path or flight plan altitude: it is depicted in solid colors. Secondary Wx is weather outside your flight path or flight plan altitude: it is depicted with cross hatching. |
| What's the best policy regarding thunderstorms? | Avoiding thunderstorms is the best policy. Avoid by at least 20 miles any thunderstorm identified as severe or giving an intense radar echo. |
| What color is turbulence displayed as on the weather radar? | Magenta. |
| What happens when GND ORIDE is selected on the SMC's radar function? | This mode overrides forced standby and allows operation of the radar on the ground. It is deselected when you get airborne. |
| True / False: if WX is selected and there's a terrain threat, the EGPWS displays threats on the map and the PFD, regardless of the previous display selection. | True. |
| How is predicted windshear displayed? | Predictive windshear is displayed as a series of red and black bands followed by searchlights (amber lines outside the black lines) extending from the far edge of the windshear event on each side and to the edge of the WX data buffer. |
| What does EGPWS use to predict potential conflicts between the aircraft flight path and terrain? | An internal world wide terrain database along with geographic position information. |
| Where can terrain be displayed? | PFD, MAP, and VSD. |
| Waht are the stwo VSD terrain display modes? | Terrain under flight plan and terrain under track. When the VSD mode is terrain under track, green TRACK is displayed below the horizontal axis of the display. When the mnode is terrain under flight plan, the mode annunciation is removed. |
| What is the relative elevation of terrain depicted as red or yellow? | At or above the aircraft's altitude. |
| The caution look ahead distance is computed from aircraft ground speed and turn rate to provide an advanced warning and adequate time for crew response. Depending on the situation, this distance roughly corresponds to how many seconds of advance warning? | 40 to 60 seconds. |
| What is the difference between amber and red WINDSHEAR warnings? | Amber WINDSHEAR is for proverse (increasing peformance) windshear. Red WINDSHEAR is for adverse (decreasing performance) windshear conditions. |
| What is the difference between amber and red TERRAIN warnings? | Amber TERRAIN indicates the terrain ahead may be higher than airplane altitude. Red TERRAIN indicates the terrain ahead is higher than airplane altitude. |
| When would you select the TERRAIN INHIBIT switch to ON? | Airport has no published instrument approach; longest runway is < 3,500 ft. Airport is not in the terrain database; QFE operations without GPS altitude (geometric altitude) |
| When would you select the GPWS/GND SPLR FLAP ORIDE switch to ON? | In accordance with a checklist: to ensure automatic ground spoiler deployment will occur with wheel spin up if flaps are less than 22 degrees and all other parameters are met. Also to inhibit GPWS voiuce alarm, TOO LOW, FLAPS. |
| Where can traffic be displayed? | HSI, MAP, and TCAS Synoptic. |
| What is the normal TCAS vertical display range? | +/- 2700 ft.; +9900 / -2700 ft. climbing; +2700 / -9900 ft. descending. |
| What indications do you get on the PFD at descision height? | An amber DH annunciator is displayed in the raster cutout: if flashes for 5 seconds and then remains steady. |
| How is the altitude preselect window on the GP depeicted on the VSD? | As a green dashed line across the display and a digital readout in the upper left corner of the display. |
| What type of approaches can be flown in blue data? | Any approach in the FMS database, except localizer based approaches (e.g. ILS, BC, LDA, SDF). |