SYS112 Flashcards
The ailerons control aircraft movement around what axis?
The longitudinal (roll) axis.
What are the aileron trailing edge traveling limits?
20 degrees up, 11 degrees down
How are the ailerons mass balanced, and what function does this perform?
Small weights are installed along the leading edge to regulate control pressures, prevent control flutter, and improve control stability.
What is the function of the bobweight?
The bobweight is a metal plate attached to the base of the front stick, providing a heavier stick force when G-loading is increased. Helps enhance control feedback to prevent overstressing of the airframe.
What is the purpose of the elevator system?
To control the pitch (lateral axis) of the aircraft.
If you move the control stick forward in flight, how will the aircraft react?
The nose will pitch down. Elevator deflects down, bringing the tail up.
What is the purpose of the rudder system?
To control the yaw (vertical axis) of the aircraft.
What happens when you step on the right rudder pedal?
The rudder deflects right, causing the tail to pull left, and making the plane yaw right.
How does the pilot adjust the rudder pedals to position them at a more convenient setting?
By using a crank below the center console. It can move the rudder pedals up to 7 inches.
Which primary flight control surface actually moves as part of the trim system?
The ailerons
Where are the trim controls for the aileron trim setting, the elevator trim setting, and the rudder trim setting?
The trim controls for aileron and elevator are on the stick, and the trim control for elevator is on the PCL.
What is the function of the TRIM DISCONNECT switch?
It removes power from the trim system and disengages the TAD.
What are the indications the trim disconnect switch has been selected?
TAD OFF, TRIM OFF
How is electrical power provided to operate the aileron and elevator trim system?
Through a circuit breaker AIL/EL TRIM on the battery bus circuit breaker panel in the front cockpit.
If the gust lock is installed properly, how will the control surfaces appear when they are visually inspected?
The ailerons and rudder will be neutral, but the elevator will be deflected down.
What aircraft components are operated by the primary hydraulic system?
Landing gear, main gear inboard doors, flaps, speed brake, NWS
What component is the force of pressure for the primary hydraulic system?
The engine-driven pump in the accessory gearbox
What gauge color indicates hydraulic pressure is in the extended scale, but within safe operating limits?
White
When the HYDR FL LO annunciator light illuminates, what does it indicate?
When the hydraulic fluid level in the reservoir is below 1 quart.
What is the purpose of the emergency hydraulic system?
To be used for emergency extension of the landing gear in three specific situations:
- Primary hydraulic system failure
- Engine Failure
- Battery Bus Failure
What is the purpose of the emergency hydraulic system?
To be used for emergency extension of the landing gear, main gear inboard doors, and flaps.
What are the normal operating ranges for the hydraulic system pressure and fluid quantity?
Between 2880 and 3120 psi on the ESD, or FULL AC/AD in the reservoir level window.
When is the emergency landing gear extension system used?
- Primary hydraulic system failure
- Engine Failure
- Battery Bus Failure
What is the normal sequence for the emergency extension of the landing gear?
Lower landing gear select handle, pull emergency landing gear handle.
Can the flaps be operated in the event the primary hydraulic system fails?
Yes- first the emergency landing gear handle must be pulled.
What is the purpose of the speed brake?
Allows deceleration and increase your descent rate without increasing airspeed.
Where is the speed brake circuit breaker located?
On the generator bus.
What can happen if NWS is engaged at high taxi speeds?
It can result in directional control problems due to increased sensitivity.
Which has the larger turn radius, NWS or differential braking?
NWS
What are the indications of abnormal primary flight control operations?
Uncommanded pitch, roll, or yaw movements.
Sluggish response to control inputs.
What is the corrective action to take in the case of runaway trim?
Perform the runaway trim checklist procedure.
If the EHYD PX LO illuminates, what aircraft devices should you consider inoperative?
Emergency landing gear and flap extension.
What are some indications of unsafe landing gear?
Indicator lights Lack of noticeable drag/noise AOA indexer not active Inability to turn on landing or taxi lights Tendency to roll
What indicator lights would illuminate with the main landing gear full down, the nose gear still fully retracted, and the PCL above IDLE?
Two green mains, two red mains, and a red gear handle light.
When lowering flaps using the emergency system, what two conditions might result?
The flaps might extend only partially, or they may take a longer time to extend than normal.
What are the indications of wheel brake failure?
Inability to maintain directional control
Inability to slow down
Soft brake pedals
The aircraft pulls to one side
A ground-adjustable trim tab is found on:
The ailerons
What are the factors used by the TAD computer to calculate proper rudder trim tab settings?
Pitch rate
Altitude
Airspeed
Engine Torque
Once takeoff trim is set, the TAD will make no further trim inputs until:
Airspeed is greater than 80 KIAS, and there is no weight-on-wheels.
The primary and emergency hydraulic systems are pressurized to what level?
3000 +-120
What is the function of the hydraulic system engine-driven pump?
To provide the pressure for the force of the primary hydraulic system.
What is the function of the hydraulic system engine-driven pump?
To provide the hydraulic pressure for the primary hydraulic system, and also to the emergency accumulator.
When extending the landing gear, which gear door ultimately closes as part of the extension sequence?
The main gear inboard doors.
What does the red light in the landing gear sector handle indicate when illuminated?
Gear doors not closed
PCL is approaching IDLE with gear handle UP
What happens to the speed brake if the hydraulic system fails?
It is inoperative.
The flaps should not be operated above what airspeed?
150 KIAS
When completing a sharp turn, how should NWS be used?
It should be turned off so that the angle of the nosewheel is not limited.
What causes the EHYD PX LO light to come on.
The emergency hydraulic pressure is less than 2400 +- 150 psi.
