Chapter 5.3 - Aerodromes and ALAs

Question 1

What does ALA stand for?

Answer 1

Aircraft Landing Areas.

Question 2

Name four factors that determine whether or not the Runway can be used?

Answer 2

• Runway Weight Limit.
• Runway Type Pressure Limit.
• Runway Width.
• Operational Restrictions.

Question 3

Name four Runway factors which are needed to check the Aircraft’s performance?

Answer 3

• Runway Surface.
• Runway Slope.
• Takeoff and Landing Distance Available.
• Elevation.

Question 4

Certified/Registered Aerodromes: What are the ranges in length for a Runway?

Answer 4

400 to 4000 metres.

Question 5

Certified/Registered Aerodromes: What are the ranges in width for a Runway?

Answer 5

18 to 45 metres.

Question 6

What does RESA stand for?

Answer 6

Runway End Safety Area.

Question 7

What does ASDA stand for?

Answer 7

Accelerate-Stop Distance Available.

Question 8

What’s the main difference between a Clearway and Stopway on a Runway Strip?

Answer 8

Stopway will usually be prepared to carry the weight of an Aircraft.

Question 9

Define Obstacle-clear Takeoff Gradient?

Answer 9

The slope of the surface from the end of the Runway Strip to the highest obstacle in the Takeoff Climb.

Question 10

What does TORA stand for?

Answer 10

Takeoff Run Available.

Question 11

What does TODA stand for?

Answer 11

Takeoff Distance Available.

Question 12

What does LDA stand for?

Answer 12

Landing Distance Available.

Question 13

Except in an Emergency, what is required to use an ALA?

Answer 13

Consent from the owner/occupier.

Question 14

Define ALA Clearway?

Answer 14

An area with no obstacles with a slope of 2.5% from the end of the Runway over a width of 45 metres.

Question 15

Define Fly-over Area?

Answer 15

The ground adjacent to the Runway Strip with no obstacles.

Question 16

Define Lateral Transitional Area?

Answer 16

An area extending outwards from the outer edge of the Fly-over Area on either side of the Runway.

Question 17

ALA: Minimum length of a Runway?

Answer 17

15 metres.

Question 18

ALA: Length of Runway Strips?

Answer 18

30 to 45 metres wide.

Question 19

ALA: What’s the maximum percentage for the Longitudinal Surface Slope?

Answer 19

Should not exceed 2%.

Question 20

ALA: What’s the maximum percentage for the Transverse Surface Slope between Runway and Runway Strip?

Answer 20

Should not exceed 2.5%.

Question 21

ALA: What’s the maximum percentage of the Transverse Surface Slope between outer edges of Runway Strip to Fly-over Areas?

Answer 21

Should not exceed 12.5%.

Question 22

Which colour markers are used for an ALA Runway?

Answer 22

White.

Question 23

Name four types of Runway markers used for an ALA Runway?

Answer 23

• Cone Marker.
• Inverted Bucket.
• Road Safety Cones.
• Flush Marker.

Question 24

Which colour markers are used for an ALA Runway Strip (2)?

Answer 24

• White for Runway Markers.

- Yellow for Apron and Taxiway edges.

Question 25

Name two types of markers for an ALA Runway Strip?

Answer 25

• Cone Marker.

- Gable Marker.

Question 26

Other than markers, what other main requirement is required for ALA?

Answer 26

Wind Direction Indicator.

Question 27

Name two types of surfaces at an ALA which can degrade the performance and landing of an Aircraft?

Answer 27

• Rough.

- Soft.

Question 28

How can an ALA be tested for rough surface?

Answer 28

By driving a vehicle at a speed of 75 kilometres per hour.

Question 29

How can an ALA be tested for soft surface?

Answer 29

By driving a vehicle in a zigzag no less than 15 kilometres per hour.