United 737 Flight Controls Flashcards
At radio altitudes less than ____’ do not deploy speed brakes in flight
1000’
Full power control to the ailerons is provided by ____ hydraulic system
Either
If you have a total hydraulic power failure-rotation of the control wheels ____ position the ailerons
mechanically
If you have a jammed spoiler system, force applied to the ___ control wheel provides roll control from the ailerons
Captain’s
If you have a jammed aileron system, force applied to the _____ control wheel provides roll control from the spoilers
First Officer’s
If the autopilot is engaged, any ____ trim applied. can result in an out of trim condition and an abrupt ____ movement when the autopilot is disconnected.
aileron; rolling
When the control wheel is displaced more than approx ____ spoiler deflection is initiated and the flight spoilers rise on the wing with the up aileron and remain faired on the wing with the down aileron.
10 degrees
On the 737 _____ aileron trim switches reposition the aileron neutral control position.
Movement of both
Looking at the pitch control surfaces, these consist of ___powered elevators and an ___ powered stabilizer
hydraulic; electrically
If you have a control column jam, an override mechanism allows___
the control columns to be physically seperated
If the FEEL DIFF PRESS light illuminates, this indicates ___
excessive differential hydraulic pressure is sensed in the elevator feel computer
On the 737, engagement and disengagement of the Mach Trim System is accomplished _____
automatically as a function of airspeed
What has occured when the MACH TRIM FAIL light is illuminated only when the Master Caution Annunciator recall is activated?
a single channel failure of the mach trim system
The elevator feel shift module increases hydraulic system A pressure to the elevator feel and centering unit during a stall. This increases the ___ force to approximately double the normal feel pressure.
Forward control column
There are two modes on the main electric and autopilot stabilizer trim: high speed with flaps ___ and low speed with flaps ____
extended ; retracted
Actuating either pair of stabilizer trim switches____ if the autopilot is enaged
Automatically disengages the autopilot
With the stabilizer trim outside the takeoff trim range ___ if takeoff is attempted
An intermittent horn sounds
____ may be used to return the stabilizer to electrical trim units if manual trim is used to position the stabilizer beyond the electrical trim limits
The stabilizer trim switches
The stabilizer trim main electric cutout switch and the stabilizer trim autopilot cutout switch are provided to allow the autopilot or main electrical trim inputs to be ___
disconnected from the single stabilizer trim motor
When control column movement opposes the trim direction what will occur?
The control column actuated stabilizer trim cutout switches stop operation of the main electric and autopilot trim
Switching the STAB TRIM override switch to OVERRIDE____
electric trim can be used regardless of control column position
The speed trim system (STS) is a speed stability augmentation system designed to improve the flight characteristics during any operation with a low gross weight, aft center of gravity, and high thrust when the autopilot ____ engaged
IS NOT
____ operated the rudder system
Either Hydraulic System
B737 800 the yaw damper uses the ____
HYD SYS B or Standby hydraulic system pressure
