Flight Control System On-Ground Sub-mode Quiz

The pitch, roll, and yaw trim indicators will include a green band.

AOA limiting is unavailable.

The amount of elevator deflection per column deflection decreases.

<p>The elevator is biased one degree nose up for each 'notch' of flap handle deflection.</p> Signup and view all the answers

<p>Below 60 KCAS.</p> Signup and view all the answers

<p>FCC Direct Mode (caution) CAS message</p> Signup and view all the answers

<p>Stall Protection Unavail (caution) CAS message</p> Signup and view all the answers

<p>Column deflection translates directly to elevator command</p> Signup and view all the answers

<p>Wheel deflection translates directly to aileron and spoiler deflection</p> Signup and view all the answers

<p>Move at its maximum rate of 0.4 degrees per second</p> Signup and view all the answers

<p>The conditions are: WOW from both main landing gear indicates weight off wheels, AOA limiting is available as indicated by the absence of the Stall Protection Unavail (caution) CAS message, and Normalized AOA is greater than the AOA limiting sub-mode entry threshold.</p> Signup and view all the answers

<p>In the AOA limiting sub-mode, column commands angle of attack, with full aft column resulting in maximum allowed angle of attack (alpha limit of approximately 0.96 normalized AOA).</p> Signup and view all the answers

<p>If the aircraft should touch down while in AOA limiting mode, a transition to the on-ground sub-mode will occur, as on-ground conditions have priority.</p> Signup and view all the answers

<p>The FCC AOA Limiting (advisory) CAS message will be displayed. Additionally, the Stall Protection Active (caution) CAS message will be displayed if the AOA is near its limit value of 0.96.</p> Signup and view all the answers

<p>In cases of significant pitch rate and rapid/large aft column input, the AOA limiting sub-mode entry threshold can be lowered substantially.</p> Signup and view all the answers

<p>Two or more air data probes are heated and providing consistent data AND At least one IRU is operating without conflicting data from another IRU or all operating AHRS AND The horizontal stabilizer is not in Backup Mode.</p> Signup and view all the answers

<p>The horizontal stabilizer is directly controlled by the center console backup trim switch.</p> Signup and view all the answers

<p>The four sub-modes are: On-ground, Takeoff and Landing, Cruise, and Angle of Attack (AOA) Limiting.</p> Signup and view all the answers

<p>Both the left and right main gear wheel speeds are 47 knots or greater and Radar altitude is less than 10 feet.</p> Signup and view all the answers

<p>The purpose of the AOA Limiting sub-mode is not explicitly stated in the given text.</p> Signup and view all the answers

<p>The 'ailerons as ground spoilers' function commands the ailerons to the full trailing edge-up position to act as ground spoilers. This does not affect aircraft roll control, which utilizes a single aileron with an increased displacement ratio. However, it does create a nose-up pitching moment, which is balanced by a slight elevator trailing-edge-down displacement commanded by the FCC.</p> Signup and view all the answers

<p>Removing the 'ailerons as ground spoilers' function requires the same pilot actions as stowing the ground spoilers, such as selecting the GND SPOILER switch to the OFF position or advancing at least one throttle forward, out of the idle position. This function is only available when operating in FCC Normal and Alternate modes.</p> Signup and view all the answers

<p>The GND SPOILER switch must be in the ARMED position for automatic ground spoiler deployment. The switch has a split lens, with the upper portion labeled OFF (amber) and the lower portion labeled ARMED (blue). When the switch is extended, OFF is illuminated (gear down) or the switch is dark (gear up). When the switch is depressed, ARMED is illuminated.</p> Signup and view all the answers

<p>The GPWS / GND SPLR FLAP ORIDE switch serves two functions, but the text does not provide details on what those functions are.</p> Signup and view all the answers

<p>The 'ailerons as ground spoilers' function is only available when operating in FCC Normal and Alternate modes.</p> Signup and view all the answers

<p>The primary indication of Alternate mode is an FCC Alternate Mode (caution) CAS message.</p> Signup and view all the answers

<p>When either the flap or gear handle is not up (assumes 250 KCAS) in Alternate mode, the amount of surface deflection per pilot input for pitch, roll, and yaw will be greatest.</p> Signup and view all the answers

<p>If IRU #3 data is available in Alternate mode, a simplified yaw damper will damp dutch roll oscillations.</p> Signup and view all the answers

<p>When any pitch trim switch is actuated in Alternate mode, the stabilizer moves at its maximum rate of 0.4 degrees per second.</p> Signup and view all the answers

<p>The FCS will enter Direct mode after all four FCC channels become invalid.</p> Signup and view all the answers

<p>The ground spoilers deploy when the GND SPOILER switch is ARMED, both throttles are at idle, and one or more of the following conditions are met: (1) Left MLG weight-on-wheels (WOW) AND left wheel speed &gt; 47 kts, (2) Right MLG WOW AND right wheel speed &gt; 47 kts, (3) Both WOW AND radalt &lt; 10 ft OR invalid, (4) Both wheel speeds &gt; 47 kts AND radalt &lt; 10 ft OR invalid AND flaps &gt; 22 OR GND SPLR FLAP ORIDE switch ON.</p> Signup and view all the answers

<p>The ground spoilers are normally armed prior to takeoffs and full-stop landings to allow for deployment during a rejected takeoff or after landing.</p> Signup and view all the answers

<p>The ailerons deploy as ground spoilers to reduce lift and increase drag after landing or during a rejected takeoff, using the same activation logic as the ground spoilers (weight-on-wheels or wheel speed, and both throttles at idle).</p> Signup and view all the answers

<p>AOA limiting is a flight control system function that limits the aircraft's angle of attack to prevent stalls. It is unavailable when the aircraft is in Direct mode.</p> Signup and view all the answers

<p>As airspeed increases above 135 KCAS, pitch control becomes more dependent on elevator deflection and less dependent on stabilizer trim.</p> Signup and view all the answers

<p>The indications that the flight control system is in the On-Ground sub-mode are not explicitly stated in the given text.</p> Signup and view all the answers

<p>The provided text does not specify an airspeed at which rudder deflection becomes solely dependent on rudder pedal deflection.</p> Signup and view all the answers

<p>The provided text does not explain how column deflection affects pitch control in Alternate and Direct modes.</p> Signup and view all the answers

<p>The provided text does not mention what actuation of pitch trim switches commands the stabilizer to do.</p> Signup and view all the answers

<p>The provided text does not explain how roll control is affected in Alternate and Direct modes.</p> Signup and view all the answers