G600 - AVIONICS

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What's the difference between HUD uncaged and caged modes?

-In UNCAGED mode, FPV is free to roam horizontally and vertically. -In CAGED mode, FPV is free to move vertically; however, it's locked in horizontal center. -In CAGED mode, FPV indicates plane's heading and ghost FPV represents track. -In UNCAGED mode, boresight represents heading and FPV represents track. Ref: Gulfstream Symmetry 2B

What is Windshear / CFIT vertical escape maneuver?

1. AP / AT: Disconnect 2. Pitch: Smoothly increase using up to full aft stick (30° pitch maximum) 3. Power Levers: Full forward 4. Once safe climb out is assured: Retract gear / flaps

When does flare cue appear?

100 ft; it moves upward as aircraft approaches the ground and provides flare guidance Ref: Gulfstream Symmetry 2B

At what altitude does airport symbol normally appear on HUD?

2000' above airport Ref: Gulfstream Symmetry 2B

When does runway symbol replace the airport symbol?

350 ft RA, runway symbol joins airport symbol 325 ft RA, airport symbol disappears. 60 ft RA, Runway symbol is removed from display Ref: Gulfstream Symmetry 2B

Caution look ahead distance is computed from aircraft ground speed and turn rate to provide advanced warning and adequate time for crew response. Depending on situation, this distance roughly corresponds to how many seconds of advance warning?

40 to 60 seconds Ref: Gulfstream Symmetry 2B

How do you know if a chart is geo- referenced?

A white or green icon appears in right corner of chart's title bar which enables aircraft's actual position (displayed as green airplane symbol) to be displayed Ref: Gulfstream Symmetry 2B-05-40

What part display is cursor restricted from entering?

ADI; otherwise, it can move anywhere in a display window on its associated DU Ref: Gulfstream Symmetry 2B-02-20

What's the source of air data to SFD's?

ADS 4 is direct wired to SFD's; however, other air data systems are selectable Ref: Gulfstream Symmetry 2B

What's the indication of normal AT disengagement?

AT1 or AT2 flashes amber for five (5) seconds along with an aural tone (i.e., LO/LO/LO triple tone) Ref: Gulfstream Symmetry 2B-22-40

Describe the three (3) different levels of EVS camera gain.

AUTO, H for high, and L for low. Select -AUTO if you want camera to automatically adjust gain, -H for low visibility, -L for night VMC or day with smog. Indications of your selection appear on upper left portion of combiner: EVS A for AUTO, EVS H for high, EVS L for low. Ref: Gulfstream Symmetry 2B

What occurs when AUTO is selected on flight guidance panel?

Both AP and AT engage: one channel of autopilot connects to autopilot system servos that move side stick, and one channel of autothrottle connects to autothrottle system servos that move power levers. Ref: Gulfstream Symmetry 2B-21-40

During ILS approach below 1200 feet RA, both green triangles illuminate above PFD SRC switch. What does this indicate?

Both navigation receivers' data is being averaged Ref: Gulfstream Symmetry 2B-21-40

How is predicted windshear displayed?

By a series of red and black bands in area of windshear event followed by searchlights (amber lines outside of black lines) extending from far edge of windshear event on each side and to the edge of WX data buffer Ref: Gulfstream Symmetry 2B

What's the restriction on selection of full windows on DU2 and DU3?

Cannot be selected on both DU2 and DU3 at the same time Ref: Gulfstream Symmetry 2B-03-30

HUD symbols are described as being either conformal or non-conformal. What's the difference?

Conformal symbol has real-world counterpart (e.g., the horizon line represents the horizon degree for degree). Altitude dial is considered non-conformal since it doesn't represent anything in real world. Ref: Gulfstream Symmetry 2B

Which display units (DU's) are referred to as Multifunction Displays (MFD's)?

DU #2 and #3 Ref: Gulfstream Symmetry 2B-04-10

What's the normal location of primary engine instruments?

DU2 upper Ref: Gulfstream Symmetry 2B-03-30

What's the normal location of CAS display?

DU3 upper Ref: Gulfstream Symmetry 2B-03-30

What's the source of the EVS image?

EVS camera, unlike the HUD, uses infrared technology and is optimized to detect runway lighting. Ref: PAS

What's the purpose of 121.5 EMER guarded physical switch located on side wall above oxygen mask?

Enables selection of emergency frequency for total TSC failure. Ref: PAS

What is EPU?

Estimated position uncertainty: calculated estimate of accuracy of navigation equipment aboard aircraft. If EPU > RNP, numbers are highlighted by cautionary amber overlay and CDI needle turns amber. Ref: Gulfstream Symmetry 2B-04-160

How do you know when EVS image is available for display?

FLIR flashes in upper left portion of combiner after cool down and then goes steady. Cool down normally takes 10-15 minutes but can take longer if aircraft is hot soaked. Ref: Gulfstream Symmetry 2B

What would be indicated if DU had a black display?

Failed or unpowered Ref: Gulfstream Symmetry 2B

When would pilot's PFD automatically be placed onto DU #2?

Failure of DU #1 (or respective AGM) Ref: Gulfstream Symmetry 2B-03-50

When would copilot's PFD automatically be placed onto DU #3?

Failure of DU #4 (or respective AGM) Ref: Gulfstream Symmetry 2B-03-50

What's the primary symbol used to control aircraft with the HUD?

Flight Path Vector (FPV) Ref: Gulfstream Symmetry 2B

What's the meaning of the color yellow on flight plan page?

From waypoint Ref: Gulfstream Symmetry 2B

What is provided on HUD unusual attitude display to prevent you from over stressing the aircraft during recovery?

G-load digital readout Ref: PAS

What callouts are inhibited with selection of the Rad Alt Inhibit?

GPWS Mode 6 advisory callouts of altitudes during approach and landing except for "minimums" and "bank angle" Ref: Gulfstream Symmetry 2B

What's the source of HUD symbols?

HUD computer Ref: PAS

What would an amber HDG or ATT comparator warning indicate on your PFD?

Heading or attitude different from other pilot's Ref: Gulfstream Symmetry 2B

How is heat depicted on EVS image?

Hotter items from IR camera are depicted as lighter while items with less heat are depicted as darker Ref: GVII-P-AVN presentation

What would red HDG FAIL and red ATT FAIL annunciations indicate on PFD?

IRS failure Ref: Gulfstream Symmetry 2B

What does magenta dashed line extending from nose of aircraft to compass arc represent on map display?

IRS track vector Ref: Gulfstream Symmetry 2B

What happens when ALTITUDE HOLD button is pressed?

If ALT not active, vertical mode is immediately changed to ALT, green cue light illuminates and altitude that existed at the instant the button was pressed is held. If ALT is active, ALT hold is deselected and aircraft goes into FPA mode. Ref: Gulfstream Symmetry 2B-21-60

When would you select GPWS Flap Inhibit?

In accordance with checklist: to inhibit GPWS voice alarm, "TOO LOW, FLAPS." Ref: Gulfstream Symmetry 2B

What is FLCH mode?

In all cases FLCH modes are speed hold modes (IAS or MACH), meaning the aircraft changes pitch to maintain speed displayed in FGP's speed window. Ref: Gulfstream Symmetry 2B-21-60

Describe methodology behind flight mode annunciations on the PFD.

In all cases, a green mode annunciation (right side of mode window) indicates a particular mode is engaged, while a white mode annunciation (left side of mode window) indicates a particular mode is armed only. Whenever mode transitions from armed to engaged, mode is surrounded by green box for five (5) seconds to alert crew that a mode is engaged. Ref: PAS

If DU1 fails and is subsequently regained by performing Display Unit (DU) Failure procedure, PFD comes back on DU1 and also remains displayed on DU2. How can you unlatch the display and regain your map or synoptic?

In flight, you'll need to press DU Unlatch (OHPTS>DU Ctrl / Test) Ref: AFM 03-16-40

What does the EGPWS use to predict potential conflicts between aircraft flight path and terrain?

Internal worldwide terrain database along with geographic position information Ref: Gulfstream Symmetry 2B

What does an amber MAG2 indicate on both PFD's?

It alerts the crew that both pilots are using same source for heading information: in this case, IRS #2. Ref: Gulfstream Symmetry 2B

What does an amber RA2 indicate on both PFD's?

It alerts the crew that both pilots' flight instruments are receiving radio altimeter data from same source. Ref: Gulfstream Symmetry 2B

Describe some features of the GVII's weather radar.

It controls antenna scan, collects weather and terrain info, and stores it in 3-D memory. Some operational modes include ground mapping, turbulence detection and predictive windshear feature. Ref: Gulfstream Symmetry 2B

Describe purpose of Air Data System (ADS).

It measures pressure and temperature of outside air and supplies this data to using systems. Processed air data provided by ADC's include things like pressure altitude, calibrated airspeed, vertical speed, true airspeed, mach number, AOA, and side slip.

What's the purpose of Guidance Panel?

It provides most of controls for operation of Automatic Flight Control System (AFCS). Ref: Gulfstream Symmetry 2B-02-40

When VGP is engaged vertical mode, what's the effect of any altitude set in FGP's altitude preselect window?

It'll be ignored by AFCS similar to an ILS approach Ref: Gulfstream Symmetry 2B-21-60

Why does combiner have a breakaway position?

It's a safety feature that allows combiner glass to rotate toward windscreen with head impact and lock in place during sudden aircraft deceleration. This minimizes head injury. Ref: PAS

How does climb or descent rate vary with FLCH?

It's based on the magnitude of altitude change commanded. Ref: Gulfstream Symmetry 2B-21-60

What tone is associated with autopilot disengagement?

LO/HI/LO triple tone Ref: Gulfstream Symmetry 2B

What happens if both cursors are selected to the same DU?

Last active cursor has exclusive control in making selections within the display in which both cursors reside. Ref: Gulfstream Symmetry 2B-02-20

With AP engaged, what happens when PFD SRC switch is pressed on flight guidance panel?

Lateral and vertical modes change to ROL and FPA; autopilot remains engaged. Ref: Gulfstream Symmetry 2B-21-40

What would a big red X indicate on a DU?

Loss of data (i.e., failure of associated AGM) Ref: Gulfstream Symmetry 2B

What color is turbulence displayed on weather radar?

Magenta Ref: Gulfstream Symmetry 2B

How can you increase chances of seeing approach and runway lights with EVS in low visibility?

Make sure lights are set to full bright prior to commencing the approach and select high gain Ref: Gulfstream Symmetry 2B-08-90

What happens when a red or amber CAS message becomes active?

Message displays in inverse video, aural alert sounds (i.e., three chimes for red or two for amber), and respective annunciator on master warning panel illuminates (i.e., red WARN for red or amber CAUT for amber). When annunciator/button is pushed on master warning panel, annunciator extinguishes, tone silences, and message displays normally. If there are red messages already on CAS display when new red message becomes active, new message displays at top of red message stack. If there are amber messages already on CAS display when new amber message becomes active, new message displays at top of amber message stack.

What happens when a white status message becomes active?

Message displays similar to blue CAS message but there's no chime Ref: Gulfstream Symmetry 2B-07-60

What happens when a blue CAS message becomes active?

Message flashes for five (5) seconds and then displays normally, and blue message aural alert is sounded (one chime). No pilot action is required to acknowledge blue messages: you get one (1) chime only. If there are blue messages already on CAS display when new blue message becomes active, new message displays at top of blue message stack.

What is NUC?

NUC stands for Non-Uniformity Correction. It's a calibration process that results in cleaner picture and occurs during camera power-up, flaps selected from 0° to 10°, or manual NUC selected. Ref: Gulfstream Symmetry 2B-04-70

Where can terrain be displayed?

On PFD and/or map (including VSD) Ref: Gulfstream Symmetry 2B

Which displays are considered most important?

PFD's are considered most important followed by primary engine display and CAS Ref: Gulfstream Symmetry 2B-03-50

Where is the navigation mode displayed on TSC?

Pos Sensors page of FMS Ref: Gulfstream Symmetry 2B

What kind of information do IRU's provide?

Position, velocity, heading and attitude data Ref: Gulfstream Symmetry 2B

What happens with selection of Call Inhibit?

Prevents GCMS related messages from displaying on CAS display. Ref: Gulfstream Symmetry 2B

What is primary and secondary weather and how is it depicted?

Primary weather is weather along flight path or flight plan altitude: depicted in solid colors. Secondary weather is weather outside of flight path or flight plan altitude: depicted with cross hatching. Ref: Gulfstream Symmetry 2B

What does Aircraft Reference symbol (or Boresight symbol) represent on HUD?

Projected centerline of aircraft (boresight) Ref: Gulfstream Symmetry 2B

When is retard mode activated?

Radio altitude < 50 feet with gear down Ref: Gulfstream Symmetry 2B-22-50

What is RNP?

Required nav performance: accuracy in NM required for navigation in the area the aircraft is flying and affects CDI sensitivity (i.e., lower RNP equates to greater CDI sensitivity). Ref: Gulfstream Symmetry 2B-04-160

How should cloth cover be removed from combiner?

Rockwell Collins recommends removing cloth cover after moving combiner to operating position. In like fashion, they recommend reattaching cloth cover before moving combiner to stow position. Ref: PAS

Flight director or autopilot with vertical guidance, either ILS or FMS vertical path, is required for all IMC EVS approaches. How do you determine if obstacle-free path is present?

Runway is served by an approach to Decision Altitude (DA). Ref: FAA Order 8900.1, AFM 01-34-60

What must the source of navigation be when selecting VNAV?

Since all VNAV vertical modes are based on FMS altitude and/or constraints, FMS must be the selected NAV source. Ref: Gulfstream Symmetry 2B-21-60

What's the recommended technique when given a heading?

Sync the heading knob, select heading mode, and then spin heading knob Ref: Gulfstream Symmetry 2B-21-70

What are the two (2) types of automatic CAS message filters?

Takeoff and Landing, and Power up Ref: Gulfstream Symmetry 2B-07-10

What are the two VSD terrain display modes?

Terrain under Flight Plan and Terrain under Track. When VSD mode is Terrain under Track, green TRACK is displayed below horizontal axis of display. When mode is Terrain under Flight Plan, green FPLN is displayed. Ref: Gulfstream Symmetry 2B

With airplane on ground, if AGM 1, 2 or 4 fails, selecting the corresponding display system control switch to ALT position causes what to occur?

There's a rearrangement of AGM to DU architecture, DU associated with failed AGM receives graphics, and red X is placed on DU 3. Ref: Gulfstream Symmetry 2B-03-60

What functions are available with Phase-Of-Flight (POF) presets?

They can be selected, stored, and reset Ref: Gulfstream Symmetry 2B-19-10

Describe Modular Avionics Units (MAU's).

They're the main computers and processors that control most avionics related applications on aircraft. Ref: Gulfstream Symmetry 2B-01-10

Describe some factors that affect EVS performance.

Thick clouds, thermal crossover, blooming, and misalignment Ref: GVII-P-AVN presentation

What happens when Ground Override is selected?

This mode overrides forced standby and allows operation of radar on ground: it's deselected airborne. Ref: Gulfstream Symmetry 2B

Where can traffic be displayed?

Three places: HSI, map and traffic synoptic page Ref: Gulfstream Symmetry 2B

Why are TAT probes aspirated by bleed air on ground?

To improve accuracy of temperature readings

Why does horizon line flash on HUD at nose high and nose low attitudes?

To indicate non-conformity Ref: Gulfstream Symmetry 2B

True/False: GPS is capable of SBAS signals which enables GVII to execute Localizer Performance with Vertical Guidance (LPV) approaches?

True Ref: Gulfstream Symmetry 2B

True/False: If WX is selected and there's a terrain threat, EGPWS displays threats on map and on PFD, regardless of previous display selection.

True Ref: Gulfstream Symmetry 2B

What are long range position sensors on GVII?

Two (2) GPS's and three (3) IRU's. Hybrid IRS's are primary source of navigation input to FMS: they receive GPS input which greatly improves accuracy and reduces drift rate. If both GPS's fail or entire GPS network goes down, FMS uses performance based sensor selection scheme to select best performing sensor. Ref: Gulfstream Symmetry 2B

What do top "T" and bottom inverted "T" represent on combiner during HUD Press and Hold test?

Upper and lower limit of data displayed on HUD Ref: Gulfstream Symmetry 2B

What are the primary short-range position sensors on GVII?

VOR/DME and DME/DME Ref: Gulfstream Symmetry 2B

In what kind of situation would you select GPWS Inhibit?

While flying day VFR approach in areas of high terrain Ref: PAS

Selecting GPWS Inhibit inhibits all GPWS aural warnings except for what?

Windshear Ref: Gulfstream Symmetry 2B

What are requirements for descending below DA with EVS?

You need EFVS lights to descend below DA and you need visual cues without the aid of EFVS at 100 ft above TDZE in order to continue and land unless qualified under FAR 91.176 (a) to continue and land with EFVS in lieu of natural vision. Ref: FAR 91.176 (b)

How would you know you haven't placed combiner in correct operating position?

"ALIGN HUD" message appears on combiner display. If this occurs, carefully reposition combiner glass and allow it to snap into detents. Don't use HUD if "ALIGN HUD" message continues to be displayed. Ref: PAS

What's the purpose of DU switches?

Allows dispatch with single AGM failed Ref: Gulfstream Symmetry 2B

What's the difference between amber GND PROX and red PULL UP icons displayed on PFD?

Amber GND PROX displays when aircraft is approaching terrain in unusual manner or at excessive rate whereas red PULL UP displays when GPWS senses closure on rising terrain ahead. Ref: AFM

What's the difference between amber and red WINDSHEAR warnings?

Amber WINDSHEAR is for proverse (increasing performance) windshear. Red WINDSHEAR is for adverse (decreasing performance) windshear condition. Ref: Gulfstream Symmetry 2B

What color messages can be scrolled off the CAS display?

Amber, blue and white: red can only be scrolled out of view to show other red messages Ref: Gulfstream Symmetry 2B-07-40

How is GP altitude preselect window depicted on VSD?

As green dashed line across the display and digital readout in upper left corner of the display

What's the relative elevation of terrain depicted in red or yellow?

At or above aircraft's altitude. Ref: Gulfstream Symmetry 2B

What's the default heading and attitude reference for each SFD?

Attitude / Heading Reference System (AHRS) unit and magnetometer: attitude from AHRS and heading from magnetometer Ref: Gulfstream Symmetry 2B

What's the normal TCAS vertical display range?

Auto range is ±2700', +9900'/-2700' for climbing & +2700'/-9900' for descending Ref: Gulfstream Symmetry 2B

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. Ref: AIM


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