C130 Flight Control Systems

Front 1

Flight control maint manual book

Back 1

Nzap 6211.006-2-9

Front 2

Are the flight controls fully powered or power assisted

Back 2

Power assisted

Front 3

What does power assisted flight controls mean

Back 3

Pilot feels air loads on the controls and does not need artificial feel to simulate

Front 4

What are all the primary flight controls fitted with

Back 4

Electrically operated trim tabs

Front 5

What type of flaps are fitted

Back 5

Fowler type trailing edge flaps

Front 6

What type of cables and how many strands per cable are used on flight controls

Back 6

Lockclad type

7 x 19

Front 7

What is the advantage of lockclad cables

Back 7

More compatible coefficent of expansion i.e closer to the aircraft and due its rigidity

Front 8

Purpose of the flight station torque tubes

Back 8

Provide a connection between the pilots and copilots control systems and means of transmitting inputs from flight deck controls to various canle syatems

Front 9

Where are the individual torque tubes for each system located

Back 9

Below the flight deck floor

Front 10

What is the order from front to rear of torque tubes

Back 10

Rae

Rudder

Aeileron

Elevator

Front 11

Purpose of cable tension regulators

Back 11

Designed to smooth out tension fluctuations due to changes in temp

Front 12

Secondary purpose of tension regulators

Back 12

Provide means of inducing slack into system when disconnecting a cable run for any purpose

Front 13

Where are the tension regulators fitted

Back 13

To each control cable system linking the cables to the torque tubes

Front 14

What can happen if tension regulator bolts are incorrectly fitted

Back 14

They can jam and cause the controls themselves to jam.

Correct fitment procedure should be followed

Front 15

Purpose of the booster assemblies

Back 15

Assist the pilot moving the carious control surfaces utilizying hyd pressure from both utility and booster systems

Front 16

What arrangement is the booster assemblies in

Back 16

Double redundancy arrangement

Front 17

What amount of advantage does the power assistance give the pilot over flight controls

Back 17

40 to 1

Front 18

What is essential when moving control surfaces on the ground

Back 18

Safety man

Front 19

What size filter is housed in the manifold and what pressure bypass

Back 19

3 micron filter with a 40psi bypass

Front 20

Application of hyd pressure to a booster package with rig pins fitted will cause what

Back 20

Serious damage to the units

Front 21

What do the snubber valves located in the main booster actuators do

Back 21

Restrict the speed of the piston in last bit of travle to prevent pilots slamming the controls against the stops

Front 22

Secondary purpose of snubber valves

Back 22

Effect of gust dampeners and prevent the need for control locks when leaving aircraft in high winds

Front 23

Caution about gust dampening function

Back 23

Only effective if the packages are full of hyd fluid. Subjecting the aircraft to high tail winds with no fluid can cause serious damage to control systems

Front 24

Range of movement in the flight control systems is limited by what

Back 24

By the extent of movement of the main booster actuators

Front 25

What does this form

Back 25

Primary stop in each system

Front 26

Where are the secondary stops installed

Back 26

On each station torque tube - slightly clear of contact once primary stop is reached

Front 27

Warning about boost off valves

Back 27

Fail safe open feature makes them un reliable method of isolating packages from hud system during maintenace

Front 28

When rig pin is fitted to the aileron booster pack output what is the caution to be observed

Back 28

Input is free to move and can cause damage to package if hyds are in advertantly applied if pin fitted

Front 29

3 components of the aileron system

Back 29

Solenoid operated shutoff valves

Pressure reducing valves

Pressure relief valve

Front 30

What does the pedal adjustment system include and what might it cause

Back 30

Includes a spring loaded cartridge assy which may cause injury when being dismantled

Front 31

What is the caution when removing rudder

Back 31

Extreme caution as siezing of hinge pins can cause damage to rudder and sureounding structure

Front 32

What pressure is sent to rudder hyd booster - normal and at low speed config and why

Back 32

1300 psi during normal and 3000psi at low speed config to prevent excessive stress loads on vertical stabalizer

Front 33

3 components on rudder diverter panel

Back 33

Diverter valves

Pressure reducing valves

Pressure relief valve

Front 34

What pressure does the pressure relief valve limit to if pressure reducing valve fails

Back 34

1600 psi

Front 35

What does the rudder hyd system include

Back 35

Pressure transmitter

Front 36

Where is the bob weight attatched for the elevator control system

Back 36

Suspended on the fwd arm from left hand end of elevator torque tube

Front 37

What does the bob weight do

Back 37

Opposes tendancy of the aircraft to pitch up or down by imparting an opposite input to the control system

Front 38

What oressure does the elevator sys work at

Back 38

Constant 3000 psi

Front 39

What does the trim tabs do

Back 39

Effectively overcome the power of booster packs by pure brute force

Front 40

How are trim tabs controlled

Back 40

From switches on center console or thimb switches on the outboard of each control wheel

Front 41

How are the aileron trim tabs controlled

Back 41

Single actuator on left aileron trim tab

Front 42

Is the elevator trim system dual controlled

Back 42

Yes

Front 43

How do the dual controls work

Back 43

An ac faster normal system and a dc emergency slower system

Front 44

How to operate normal and emergency trim tabs for elevator

Back 44

Normal on control wheel

Emergency on pedestal switch

Front 45

What is elevator trim actuation

Back 45

Detects inputs to auto pilot and attempts to cancel by moving trim tabs in the same way pilot would to relieve loads on control column

Front 46

What angle does the elevator only go to for trim tab

Back 46

20 degrees nose up and 6 degrees nose down

Front 47

Following time limitations for elevator trim tab actuation normal and emergency

Back 47

Ac - normal 25 sec on 4 min off

Dc - Emerg 60 sec on 6 min off

Front 48

How many flap sections are there

Back 48

4

Front 49

Where is the indent and full locked position for flaps on control

Back 49

50 percent detent

Full up locked

Front 50

Two microswitches under flap control lever and purposes

Back 50

15 percent - operates rudder pressure reduction sys

75 percent - operates landing gear warning sugnal

Front 51

What is considered as the flap primary stop

Back 51

Microswitch

Front 52

Flap drive assy reduction

Back 52

6 to 1

Front 53

What drives the flap torque shaft system

Back 53

Flap drive assy hyd motor which drives a reduction gearbox driving the shaft

Front 54

At what psi is the flap brake engaged and de engaged

Back 54

Engaged below 600psi

De engaged above 600psi

Front 55

How much lbs force does it take to engage flao manual drive

Back 55

Up to 120lbs force

Front 56

What is installed in the manual drive to prevent damage to system if the torque exceeds ?

Back 56

Torque limiting clutch at about 500inch lbs

Front 57

What must be pulled before operating flaps manually

Back 57

Flap control circuit breaker and to move flap selector after completion

Front 58

What is supported along the wing rear beam by bearing assy

Back 58

Torque shafts

Front 59

How many right angle gearboxes are distributed along the torque shaft

Back 59

8

Front 60

What do they drive

Back 60

Flap screwjacks

Front 61

How many right angle gearboxes per flap section

Back 61

2

Front 62

What does the solid steel rod down the hollow screwjack shaft do

Back 62

Gives a certain amount of shock resistance

Front 63

What limits the travel of the flap ball nut

Back 63

Mechanical stops

Front 64

Should the mechanical stops come into contact with the flap at any stage

Back 64

Not during normal operation

Front 65

Are the screwjacks all the same size

Back 65

No inboard screwjacks are longer

Front 66

How many flap carriges are there per flap section

Back 66

2 on inboard

5 on outboard

Front 67

Due to the enviroment what are the flaps suceptible to

Back 67

Cracking and corrosion

Front 68

Die to the spring loaded neutral nature of the flap spool valve what must be done to manual overide operation

Back 68

Manual overide buttons held in all the time flaps are required to move

Front 69

Where is the flap restrictor located and purpose

Back 69

In the up line to control speed of flap operation

Front 70

Where are the flow regualtors located for flaps and purpose

Back 70

In the down line to prevent motor cavitation when air loads tend to push the flaps up in flight

Front 71

What does the flap asymettry system do

Back 71

Protect against the situation where broken torque shaft causes asymmetrical condition

Front 72

What do the assymetry brakes do

Back 72

Designed to stop and hold each end of the torque shaft systemb

Front 73

Right angle reduction of assymetric system

Back 73

32:1

Front 74

What is important if a asymmetric condition be reported

Back 74

Systems should not be reset or flaps moved before diagnosis and rectification

Front 75

Aileron reducing valve pressure

Back 75

2050 psi

Front 76

Aileron pressure relief valve pressure

Back 76

2300psi