FLIGHT CONTROLS Flashcards
- What is being tested when this stall test switch is pushed?
SMYD (Stall Management & Yaw Damper Computer)
- When can you perform the test of the stall warning system?
On the ground
- What electrical power must be available for
the stall test?
AC power
- When is the stall warning system armed for
operation?
Inflight
- Will the FO’s stick shaker be felt on the
Captain’s control column?
Yes
- What does the amber color on the Leading
Edge Device annunciator represent?
LED in transit
- What does the green color on the Leading
Edge Device annunciator represent?
LED in extend or full extend position
- What color is the annunciator for an LED in
transit?
Amber
- What color is the annunciator for an LED in a
proper position?
Green or Extinguished (retracted)
- What is wrong if all lights on the LED are
extinguished?
Nothing
- Why do leading edge flaps have just two
positions on the annunciator?
They are either retracted or extended
- Why do leading edge slats have three
positions on the annunciator?
Retracted, Extended or Full Extended
- When might a green light be an indication of
an abnormal condition?
LED jammed or in an improper or uncommanded position
- If this panel was inoperative, where could you monitor LED’s in transit?
Forward Instrument Panel LE flaps in transit light
- Is autoslat movement displayed on the LED annunciator panel?
Yes
- Is autoslat movement displayed on the LE
FLAPS TRANSIT light on the Center Forward Panel?
No, this light is inhibited during auto slat ops
- What happens when you press the test switch?
All lights on the annunciator panel illuminate
- Do the LED annunciator lights test with the MASTER LIGHTS TEST switch on the forward panel?
Yes
- At what flap setting do slats move to the
EXTEND position?
Flaps1, 2, & 5
- At what flap setting do the leading edge flaps
move to FULL EXTEND?
Flaps 1 or greater
- At what flap setting do slats move to the FULL
EXTEND position?
Flaps 10 or greater
- How many ailerons are there?
Two
- How many elevators are there?
Two
- How many rudder sections are there?
One
- How are the ailerons operated normally?
Cables connect control wheels to the hydraulic PCUs (power control units)
- How are the ailerons operated with the loss of Hyd. System A or B?
No change from normal
- How are the ailerons operated with loss of
both Systems A and B?
Manually by cables
- What is installed on the ailerons to aid with
manual reversion flight?
Balance tab
- How are the elevators operated normally?
Cables connect control columns to PCUs
- Are the elevators interconnected?
Yes, by a torque tube
- How are the elevators operated with the loss of System A or B?
No change from normal
- How are the elevators operated with the loss
of both systems A and B?
Manually by cables
- What is installed on the elevators to aid with
manual reversion flight?
Balance tabs
- How is the rudder operated normally?
Cables connected to hydraulic PCUs
- Are the rudder pedals interconnected?
Yes
- Which hydraulic system normally powers the
main rudder PCU?
Both A and B
- Which hydraulic system normally powers the main yaw damper?
System B
- How is the rudder operated with the loss of
System A?
System B and STANDBY rudder PCU
- How is the rudder operated with the loss of System B?
System A and STANDBY rudder PCU
- How is the rudder operated with the loss of
both Systems A and B?
STANDBY rudder PCU
- What happens if the FLT CONTROL A switch is moved to OFF?
Flight control shutoff valve closes isolating flight controls from system A hydraulics
- What happens if the FLT CONTROL A switch is moved to STBY RUD?
Activates the standby pump and opens the standby rudder shutoff valve
- What happens if the FLT CONTROL B switch is moved to OFF?
Flight control shutoff valve closes isolating flight controls from the system B hydraulics
- What happens if the FLT CONTROL B switch is moved to STBY RUD?
Activates the standby pump and opens the standby rudder shutoff valve
- What happens if both FLT CONTROL switches are moved to OFF?
Pressure from both A and B systems is removed from the elevators, ailerons, and the rudder
- What happens if both FLT CONTROL switches are moved to STBY RUD?
Standby rudder PCU is still powered, flight controls revert to manual ops, & standby yaw damper is enabled (turn switch on)
- Would the operation of the primary flight controls be affected by a loss of System A or B?
No
- Would the operation of the primary flight controls be affected by the loss of Systems A and B?
Yes
- On the modified rudder system, what does the
STBY RUD ON light mean?
It indicates the standby rudder system is commanded on to pressurize the standby rudder power control unit
- What limits full rudder authority in flight after takeoff and before landing?
At speeds above approx 135KTS, both hyd system A and B pressure are reduced by 25% each
- What is the purpose of the Force Fight Monitor (FFM)?
It detects opposing pressure (force fight) between A and B actuators in the main rudder PCU
- What happens if opposing pressure is detected?
The FFM automatically turns on the standby hydraulic pump, opens the standby rudder shutoff valve, and illuminates the STBY rudder on, MC, and flight control light
- How is the Captain’s control column connected to the primary flight controls?
Cables to the aileron PCUs
- How is the FO’s control column connected to
the primary controls?
Cables to the spoiler PCUs
- Are the Captain’s and FO’s control wheels
connected?
Yes–by a cable drive system
- Would control forces be higher during manual
reversion flight?
Yes–friction & air loads
- What happens if an aileron or spoiler becomes
jammed?
Aileron transfer mechanism allows operating controls to be separated from non-operating controls
- How are the ailerons trimmed?
Electronically repositioning the aileron feel
& centering unit
- Where is the aileron trim indicated?
Top of the control column
- Do the control wheels move when the ailerons are trimmed?
Yes
- Can the aileron trim be used during manual
reversion?
Yes
- Should the aileron trim be used with an autopilot engaged? Why or why not?
No! Abrupt roll if not in trim when the A/P is disengaged
- What happens if an elevator becomes jammed?
Transfer mechanism allows separation of control columns to breakout operating control column
- What system is still available to assist with a jammed elevator?
Stab trim
- How are the elevators trimmed?
Only by mach trim above .615 mach
- How is pitch trim accomplished?
Stab trim
- How many speeds does the stabilizer trim
motor have?
Two
- When do these two speeds of stabilizer trim
motor operate?
High speed with flaps extended and low speed with flaps retracted