7.17

Question 1

What is used to tow aircraft on soft ground?

Answer 1

A towing bridle (attached to both main wheels)

Question 2

What direction should aircraft be towed on soft ground?

Answer 2

Forward.

Question 3

In relation to wind, how should an aircraft be parked?

Answer 3

Into the wind.

Question 4

What is recommended for a towing bar to be used with?

Answer 4

A damping system.

Question 5

What are the speed limits for an aircraft with the doors shut?

Answer 5

Tractor with a tow bar (25 km/h)

Tractor without tow bar (32km/h)

Question 6

What are the speed limits for an aircraft with the doors open?

Answer 6

10km/h

Question 7

What is MTW?

Answer 7

Maximum Taxi Weight.

Question 8

What is the engine thrust resistance at ground idle?

Answer 8

400 dan (for each engine)

Question 9

What coefficients are used for the friction between the tyres of the tow tractor and the ground?

Answer 9

Asphalt= 0.8

Wet asphalt= 0.75

Question 10

What is the maximum angle a nose wheel can be steered?

Answer 10

70 degrees.

Question 11

What can be used to steer the aircraft if the nose wheel steering is not available?

Answer 11

Differential use of landing gear wheel brakes.

Question 12

What CAP is the Visual Aids Handbook?

Answer 12

CAP637 (for marshalling)

Question 13

How many jacks are used to lift an aircraft.

Answer 13

3.

Question 14

What are the 4 types of jack?

Answer 14

Bottle jack
Bipod
Tripod
Quadrapod

Question 15

What type of jack is used for wheel changes?

Answer 15

Bottle jack.

Question 16

What jack is used for uneven ground?

Answer 16

Quadrapod.

Question 17

What range of heights can hydraulic jacks be?

Answer 17

1-5m

Question 18

How is lifting for aircraft recovery carried out?

Answer 18

Lifting airbags.

Question 19

Why is shoring done?

Answer 19

Give support to the wings to release loads on the structure before repair work.

Question 20

Why is protection required on probes and sensors when parking aircrafts?

Answer 20

Prevent ingress of moisture and insects.

Question 21

What chapter is the parking and storage of aircraft under?

Answer 21

ATA chapter 10.

Question 22

What button switch closes the avionics ventilation skin valves?

Answer 22

Ditching button.

Question 23

How long is an aircraft parked for to be classed as being parked for an extended period of time?

Answer 23

More than 2 days.

Question 24

Why do seats need to be covered when parking for extended periods?

Answer 24

Protect from UV sunlight.

Question 25

When parking for extended periods, at what periodic intervals should the aircraft be checked?

Answer 25

7 and 15 day intervals.

Question 26

When parking for extended periods, why should the aircraft be moved every so often?

Answer 26

To prevent brinelling of the bearings.

Question 27

What should weekly tests be for when storing aircraft?

Answer 27

Evidence of birds nesting.

Question 28

How often should aircraft be moved to prevent brinelling when storing aircraft.

Answer 28

Bi-weekly.

Question 29

If an aircraft is parked for more than 20 months then what is recommended?

Answer 29

Old tyres are used on the aircraft.

Question 30

What should be done to the doors every month for stored aircraft?

Answer 30

Open and reapply protective greases to door seals.

Question 31

What are the 2 types of aviation fuel?

Answer 31

Aviation gasoline and turbine fuel.

Question 32

What is aviation gasoline graded by?

Answer 32

Octane number.

Question 33

What the does the octane number indicate?

Answer 33

The higher number the better the ability to resist knocking.

Question 34

What is knocking?

Answer 34

One or more pockets of air/fuel mixture explode outside of envelope of normal combustion front.

Question 35

What is the result of knocking?

Answer 35

Dramatic increase of cylindrical pressure and metallic pinging sound.

Question 36

What are the grades of fuel coloured?

Answer 36

80- Red 100- Green 100LL (low lead)- Blue

Question 37

What are the 3 turbine engine fuels?

Answer 37

Jet A -freeze point -40 Celsius Jet A-1 - freeze point -47 celsius Jet B- -freeze point -50 Celsius

Question 38

What colour are all turbine fuels?

Answer 38

Colourless or light straw colour.

Question 39

What must turbine fuels never be used for?

Answer 39

Piston engine aircraft.

Question 40

What are the 2 types of fuelling?

Answer 40

Gravity over wing | Pressure

Question 41

What can the refuelling pressure reach?

Answer 41

50psi (1000 gallons per minute)

Question 42

What is the maximum defuelling pressure?

Answer 42

-11 psi

Question 43

Why is fuel from one aircraft not allowed to be put into another?

Answer 43

Avoid contamination such as water, microbiological growth or debris.

Question 44

What are the 5 ice and snow formations?

Answer 44

``` Rime ice Glaze ice Hoar frost Pack snow Debris ice ```

Question 45

What is the most dangerous for,anion of ice?

Answer 45

Glaze ice.

Question 46

What ice weighs a lot and can affect unequal loading on wings?

Answer 46

Glaze ice.

Question 47

What thickness of frost on the underside of the wing is permitted for take off?

Answer 47

Less than 3mm

Question 48

What is the freezing point for an 80/20 fluid/water mix?

Answer 48

-10 celsius.

Question 49

What is the freezing point for a 60/40 fluid/water mix?

Answer 49

-50 Celsius.

Question 50

What info must be included in the anti-icing code?

Answer 50

Type of fluid Percentage of fluid to water Time application began

Question 51

What is used to test hydraulic pressure to hydraulic systems?

Answer 51

Hydraulic test rig.