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DAL 737 S-LOD > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Recall the phase of flight that the Speed Trim System (STS) operates most frequently

A
  • STS operates most frequently during takeoffs, climb and go-arounds

Note: big power changes

VOL 2 / 9.2.5.2.4

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2
Q

Explain the meaning of the SPEED BRAKES EXTENDED light

A

In flight:
- SPEED BRAKE lever is beyond the ARMED position AND
- TE (trailing edge) flaps extended more than flaps 10 OR
- Radio altitude less than 800ft

You don’t want the speed brakes out when you’re landing ha, only armed to deploy for when you’re on the ground

On the ground:
- SPEED BREAK lever is in the DOWN detent AND
- Ground spoilers are not stowed

VOL 2 / 9.1.5

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3
Q

Explain the meaning of an amber LE FLAPS TRANSIT light

A

LE - leading edge
TE - trailing edge

  • any LE device in transit
  • any LE device not in programmed position with respect to TE flaps
  • a LE uncommon motion condition exists (two or more LE flaps or slats have moved away from their commanded position)
  • during alternate flap extension until LE devices are fully extended and TE flaps reach flaps 10

Note: light is inhibited during autoslat operation in flight

VOL 2 / 9.1.7

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4
Q

Explain the meaning of an illuminated Flight Control LOW PRESSURE light

A
  • Indicates low hydraulic pressure in system (A or B) pressure to ailerons, elevator and rudder
  • deactivated when associated FLIGHT CONTROL switch is positioned to STBY RUD and standby shutoff valve opens

VOL 2 / 9.1.1

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5
Q

Explain the meaning of the FEEL DIFF PRESS light

A
  • Indicates excessive differential pressure in the elevator feel computer

Notes: Elevator feel shift system (module) is controlled by the SMYD computers (
Elevator feel shift changes the control forces on the control column to simulate proper forces in flight. Excessive differential pressure can be caused by erroneous activation of the elevator feel shift computer so it gives us a warning light that something is off.

SMYD computers (there’s two) use elevator pitot tubes to get a more realistic sense of airflow over the elevator. They detect a potential stall or high AOA and control systems;
- Speed trim system
- Elevator feel shift
- Yaw dampener
- Windshear detection
- Calculates PMIs
- Autoslats

VOL 2 / 9.1.1

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6
Q

Explain the meaning of the SPEED TRIM FAIL light

A
  • Indicates failure of the speed trim system (STS)
  • Indicates failure of a single FCC (Flight Control Computer) channel when MASTER CAUTION recall is activates and light extinguishes when Master Caution System is rest.

Notes: Operates through the AP channels but only operates when AP is disengaged. Doesn’t operate through the SMYDs (assuming for redundancy if that system fails, this will help). It continuously takes snapshots of aircraft speed and holds until next update or something that causes an update (flap retraction, etc) and tries to stabilize aircraft at that airspeed. Has nothing to do with target speed but everything with snapshot speed.

VOL 2 / 9.1.1

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7
Q

Explain the meaning of the MACH TRIM FAIL light

A
  • Indicates failure of the Mach Trim System
  • Indicates failure of a single FCC (Flight Control Computer) channel when MASTER CAUTION recall is activates and light extinguishes when Master Caution System is rest.

Notes: Mach trim system helps us with pitch control. It operates with no A/P is engaged and at speeds above Mach .615. It keeps elevator effective for maneuvering stability at low and high speed regimes.

VOL 2 / 9.1.1

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8
Q

Explain the meaning of the AUTO SLAT FAIL light

A
  • Indicates failure of the auto slat system
  • Indicates failure of a single Stall Management/Yaw Damper (SMYD) computer when MASTER CAUTION recall is activates and light extinguishes when Master Caution System is rest.

Notes: Even though the light on the overhead panel is on, it’s not a dual channel failure and both FCC channels have not failed - it shows up on a recall.

Auto Slats are controlled by the SMYD computers (there’s two). Operates between flap settings 1-5 (or 1-25 on some planes). Basically when you approach a high AOA, the autoslat system will drive LE slats from extend position to FULL extend position (to increase lift over wing and lower the AOA) and then will automatically retract the LE slats back to the extend position when leaving the high AOA.

SMYD computers use elevator pitot tubes to get a more realistic sense of airflow over the elevator. They detect a potential stall or high AOA and control systems;
- Speed trim system
- Elevator feel shift
- Yaw dampener
- Windshear detection
- Calculates PMIs
- Autoslats

VOL 2 / 9.1.1

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9
Q

Explain the meaning of the YAW DAMPER light

A

Yaw damper is not engaged

Notes: approaching a high AOA, the yaw dampener will reduce hydraulic pressure to rudder making it less effective (stays in coordinated flight). Is controlled by the SMYD computers.

SMYD computers use elevator pitot tubes to get a more realistic sense of airflow over the elevator. They detect a potential stall or high AOA and control systems;
- Speed trim system
- Elevator feel shift
- Yaw dampener
- Windshear detection
- Calculates PMIs
- Autoslats

VOL 2 / 9.1.1

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10
Q

Explain the meaning of the SPEED BRAKE DO NOT ARM light

A
  • light deactivated when SPEED BRAKE lever is in the down position
  • When SPEED BRAKE lever is armed, indicates abnormal condition OR test input to the automatic speed brake system
  • during landing, indicates wheel speed has dropped below 60kts, and the speedbrake lever is not in the DOWN position

VOL 2 / 9.1.5

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11
Q

Explain the function of the FLT CONROL switches located on the Forward Overhead panel

A

STBY RUD - activates standby hydraulic system pump and opens standby rudder shutoff valve to pressurize standby rudder power control unit

OFF - closes flight control shutoff valve, isolating ailerons, elevators and rudder from associated hydraulic system pressure

ON (guarder position) - normal operating position

VOL 2 / 9.1.1

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12
Q

Explain the function of the Control Column Stabilizer cutout switches

A

Control column actuated stabilizer trim cutout switches stop operating of the main electric and autopilot trim when the control column movement opposes trim direction

Note: this mechanism is inside the control column near the floor. It senses excessive pressure on the yoke that opposes trim direction (hence why the first memory item on stab trim runaway is hold the yoke FIRMLY). If holding firmly doesn’t work, we manually flip the STAB TRIM Cutout switches on the control stand (under the flap lever).

VOL 2 / 9.2.5.2.1

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13
Q

Understand the purpose of the STAB TRIM OVERIDE switch on the AFT Electronic Panel

A

OVERIDE - bypasses the control column actuated stabilizer cutout switches to RESTORE power to the stabilizer trim switches on the Control Wheel

NORM (guarder position) - normal operating position

VOL 2 / 9.1.2

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14
Q

Explain the function of the STAB TRIM Cutout switches on the Control Stand

A

MAIN ELETRIC
- NORMAL - normal operating position
- CUTOUT - deactivates control wheel trim switch operation

AUTOPILOT
- NORMAL - normal operating position
- CUTOUT - deactivates autopilot stabilizer trim operation. Autopilot disengages if engaged.

VOL 2 / 9.2.5.2.1 & 9.1.2

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15
Q

Explain how the Flap Load Relief System operates

A

When the flaps are set at 40, the TE flaps:
- retract to 30 if airspeed for flaps 40 is exceeded
- re-extend when airspeed is reduced below flaps 40 speed

When the flaps are set at 30, the TE flaps:
- retract to 25 if airspeed for flaps 30 is exceeded
- re-extend when airspeed is reduced below flaps 30 speed

VOL 2 / 9.2.8.2

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16
Q

Explain how primary flight controls are powered

A

The flight controls are powered by redundant hydraulic resources; system A and B. Either hydraulic system can operate all primary flight controls. The ailerons and elevators may be operated manually if required. The rudder may be operated by the standby hydraulic system if system A and B pressure is not available.

VOL 2 / 9.2.1

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17
Q

Recall that flight spoilers assist the ailerons in roll control

A

The flight spoilers rise on the wing with up aileron and remain faired on the wing with down aileron. When control wheel is displaced more than approximately 10 degrees, spoiler deflection is initiated

VOL 2 / 9.2.4.2

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18
Q

Explain the function of the ALTERNATE FLAPS Master Switch

A

OFF (guarded position) - normal operating position

ARM - closes TE flap bypass valve, activates standby pump and arms the ALTERNATE FLAPS position switch

VOL 2 / 9.1.1

19
Q

Explain the position of the Speed Brake Lever

A

DOWN (detend) - all flight and ground spoiler panels in faired (down) position

ARMED:
- automatic speed brake system armed (illuminates green SPEEDBRAKE ARMED light)
- upon touchdown, the SPEEDBRAKE lever moves to the UP position, and all flight and ground spoilers extend

50% (as installed on ships 3701-3743 and 3801-3930): if the speedbrakes are deployed beyond the 50% position and the speedbrake load alleviation feature is activated:
- the speed brake lever moves tot he 50% position
- all flight spoilers retract to one-half of their maximum position for in flight use

FLIGHT DETENT - all flight spoilers are extended to their maximum position for inflight use

UP - all flight and ground spoilers are extended to their maximum position for ground use

Notes: In flight they are called speedbrakes. On the ground they are called spoilers. There are 6 panels per wing, 12 total, labeled 1-12. On each wing, the middle 4 panels are in flight speedbrakes and the outer 2 are spoilers.

In flight speedbrake panels: (2, 3, 4, 5 & 8, 9, 10, 11)
Ground spoiler panels: (1, 6 & 7, 12)

VOL 2 / 9.1.5

20
Q

Explain the function of the Speedbrake Load Alleviation Feature

A

(As installed on ships 3701-3743 and 3801-3930) - the automatic speedbrake load alleviation feature limits the deployment of the speedbrakes under certain high gross weight/airspeed combinations. Under these conditions, if the speed brakes are deployed to the FLIGHT DETEND, they automatically retract to 50% of the FLIGHT DETENT. The SPEEDBRAKE lever moves to reflect the position of the speed brakes. Manual override is available. Increased force is needed to move the SPEEDBRAKE lever beyond the 50% position with load alleviation active. the SPEEDBRAKE lever must be HELD in place when manual override is used between 50% and FLIGHT DETENT.

Notes: so if the handle keeps coming up you gotta hold it in place lol.

VOL 2 / 9.2.7.1

21
Q

Describe the Speed Brake system during ground operations

A

During landing, the auto speed brake system operates when these conditions occur:

  • SPEEDBRAKE lever is in the ARMED position
  • SPEEDBRAKE ARMED green light is illuminated
  • radio altitude is less than 10ft
  • landing gear strut compresses on touchdown (squat that switch)
  • both thrust levers are retarded to IDLE
  • main landing gear wheels spin up (more than 60kts)

The SPEEDBRAKE lever automatically moves to the UP position and the spoilers deploy.

If the SPEEDBRAKE lever is in the DOWN position during landing or rejected takeoff, the auto speed brake system operates when these conditions occur:
- main landing gear wheels spin up (more than 60kts)
- both thrust levers are retarded to IDLE
- reverse thrust levers are positioned for reverse thrust

The SPEEDBRAKE lever automatically moves to the UP position and spoilers deploy

Note: after an TRO or landing, if either thrust lever is advanced, the SPEEDBRAKE lever automatically moves to the DOWN detent and all spoiler panels retract. The spoiler panels may also be retracted by manually moving the SPEEDBRAKE lever to the DOWN detent.

VOL 2 / 9.2.7.2

22
Q

An illuminated AUTO SLAT FAIL light indicates a failure of…

A

The auto slat function in one of the SMYD computers when illuminated during MASTER CAUTION recall

ESV-SA: Flight Controls

23
Q

To aid in roll control flight spoilers..

A

rise on the wing with the up aileron.

Note: Aileron goes up, they go up!! Disruption of airflooooooow

ESV-SA: Flight Controls

24
Q

What position of the FLT CONTROL switch will activate the standby hydraulic system pump?

A

STBY RUD

Note: primary purpose of the standby hydraulic system is to control the standby rudder and/or leading edge devices. Turning the switch OFF just isolated the system from the primary flight controls. ON is the normal (guarded) position.

ESV-SA: Flight Controls

25
Q

True or False:
With the ALTERNATE FLAPS Master switch in the OFF position and normal B system hydraulic pressure, the flaps may be operated using the flap lever.

A

TRUE

Note:
Hydraulic system A main components:
- thrust reverser
- autopilot A
- LANDING GEAR
- ALTERNATE BRAKES
- other stuff

Hydraulic system B main components:
- thrust reverser
- autopilot B
- FLIGHT CONTROLS
- FLAPS
- NORMAL BRAKES
- YAW DAMPENER
- other stuff

Hydraulic system C (standby) main components:
- STANDBY RUDDER
- leading edge devices

ESV-SA: Flight Controls

26
Q

Hydraulic Systems main components

A

Hydraulic system A main components:
- thrust reverser
- autopilot A
- LANDING GEAR
- ALTERNATE BRAKES
- other stuff

Hydraulic system B main components:
- thrust reverser
- autopilot B
- FLIGHT CONTROLS
- FLAPS
- NORMAL BRAKES
- YAW DAMPENER
- other stuff

Hydraulic system C (standby) main components:
- STANDBY RUDDER
- leading edge devices

27
Q

On ships 3744-3777, an illuminated amber SPEED BRAKE DO NOT ARM light indicates…

Select all that apply

A
  • an abnormal test input to the automatic speed brake system
  • an abnormal condition in the automatic speed brake system

Note: the light is deactivated when the speed brake lever is in the DOWN position.

ESV-SA: Flight Controls

28
Q

During landing, the auto speed brake system operates when…

select all that apply

A
  • landing gear strut compresses on touchdown (squat that switch), and radio altitude is less than 10ft, both thrust levers are retarded to idle
  • the SPEEDBRAKE ARMED green light is illuminated, and the main landing gear wheels spin up (more than 60kts)
  • the SPEEDBRAKE lever is in the ARMED position (hence the green light illuminated)

ESV-SA: Flight Controls

29
Q

The SPEEDBRAKE lever’s____ position ensures all flight and ground spoilers are extended to their maximum position for GROUND use

A

UP

Note: we want speedbrakes UP and extended in their maximum position to fuck with that airflooooow. Flight detent only extended the inner 4 of 6 panels per wing, not all of them. We want em all!

ESV-SA: Flight Controls

30
Q

True or False:
The Flight Control LOW PRESSURE lights will illuminate for low hydraulic system (A or B) pressure to ailerons, elevator and rudder.

A

TRUE

ESV-SA: Flight Controls

31
Q

True or False:
Failure of a single Speed Trim FCC channel illuminates the SPEED TRIM FAIL light on the MASTER CAUTION recall

A

TRUE

ESV-SA: Flight Controls

32
Q

True or False:
Control column actuated stabilizer trim cutout switches stop operation of the main electric and autopilot trim when the control column movement opposes trim direction

A

TRUE

ESV-SA: Flight Controls

33
Q

What is the meaning of the SPEEDBRAKES EXTENDED light in FLIGHT?

Select all that apply

A
  • the SPEEDBRAKE lever is beyond the ARMED position, and the TE flaps extended more than flaps 10
  • the SPEEDBRAKE lever is beyond the ARMED position, and RA is less than 800ft

Note: logic - we don’t want speedbrakes extended low to the ground when we are landing!

That light doesn’t indicate a fault, it’s not a fault ligtht. That light only indicates a disagree with lever position and actual speedbrakes/spoiler position on the GROUND.

ESV-SA: Flight Controls

34
Q

Which light will illuminate when any leading edge device is in transit or not in the programmed position with respect to the TE flaps?

A

LE FLAPS TRANSIT

ESV-SA: Flight Controls

35
Q

With load alleviation active, which statement concerning the speedbrake load alleviation feature is correct for ship #s 3701-3743 and 381-3930?

A

If the speedbrakes are deployed, they automatically retract to 50%

ESV-SA: Flight Controls

36
Q

True or False:
An illuminated YAW DAMPER light indicates the standby yaw damper is engaged

A

FALSE

Note: it means that the yaw damper is not engaged

ESV-SA: Flight Controls

37
Q

True or False:
When the captain’s indicated airspeed is too high for the selected flap setting, flap load relief activates and retracts the TE flaps to the next lower setting below the selected flap lever position.

A

TRUE

ESV-SA: Flight Controls

38
Q

True or False:
The FEEL DIFF PRESS light indicates excessive differential pressure in the elevator feel computer

A

TRUE

ESV-SA: Flight Controls

39
Q

If hydraulic systems A and B pressure is not available, how is the rudder operated?

A

by the standby hydraulic system

ESV-SA: Flight Controls

40
Q

Choose the phase(s) of flight that the Speed Trim System operates most frequently

A

All of the above

  • Takeoff
  • Climb
  • Go Around

Note: in large power swing situations

ESV-SA: Flight Controls

41
Q

True or False:
The SPEED TRIM FAIL light indicates failure of the mach trim system

A

FALSE

Note: - Indicates failure of the speed trim system (STS)
- Indicates failure of a single FCC (Flight Control Computer) channel when MASTER CAUTION recall is activates and light extinguishes when Master Caution System is rest.

THERE’S A MACH TRIM FAIL light.

ESV-SA: Flight Controls

42
Q

With Load Alleviation active, which statement concerning the Speed brake load alleviation feature is correct?

A
  • if the speed brakes are deployed, they automatically retract to 50%

Notes:
- It does NOT limit the deployment of speedbrakes under ALL circumstances
- Manual override IS available
- The SPEEDBRAKE lever DOES move to reflect the position of the speed brakes (hence why you have to hold the lever in place to manually override it)

Check Your Knowledge - Flight Controls CBT

43
Q

When the Speed Brake Lever reaches the ____ position, all flight and ground spoilers are extended to their maximum position for GROUND use

A

UP

Check Your Knowledge - Flight Controls CBT

44
Q

During landing, the auto speed brake system will operate provided:

A
  • All of the above
  • The SPEEDBRAKE lever is in the ARMED position
  • The SPEEDBRAKE ARMED green light is illuminated
  • Landing gear strut compresses on touchdown (squat that switch)

Check Your Knowledge - Flight Controls CBT

DAL 737 S-LOD (15 decks)

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