Law 1 - Units of measurement

Question 1

Which ICAO annex is for the Units of measurement? (1)

Answer 1

Annex 5

Question 2

What shall ICAO’s International system of units (SI units) be used for? (1)

Answer 2

Ground and Air operations

Question 3

ICAO still allow some non-SI units to be measured

True or False?

Answer 3

True

Question 4

What is vertical distance measured in on the surface & in the air? (3)

Answer 4

Surface: Feet (ft)

In the air: Feet (ft) or Meters (m)

Question 5

What is horizontal - ground distances measured in? (1)

Answer 5

Meters (m)

Question 6

What is horizontal - in-flight distances measured in? (1)

Answer 6

Nautical miles

(‘flight visibility’ and Nav distances)

Question 7

What is horizontal - on the ground speed for vehicles measured in? (2)

Answer 7

KPH

MPH

Question 8

What is horizontal - in the air for speed measured in? (3)

Answer 8

Nautical miles per hour (Nm/ph)

Knots (Kts)

Mach number (M)

Question 9

What is vertical speed measured in? (1)

Answer 9

Feet per minute (FPM)

Question 10

What is the unit of mass of an aircraft? (2)

Answer 10

Metric tonnes (t)

Kilograms (Kg)

Question 11

What is the unit of mass for wake turbulence? (1)

Answer 11

Kilograms (Kg)

Question 12

What unit of mass is used to measure weight of fuel? (3)

Answer 12

Kilograms (Kg)

Pounds (lbs)

Litres (lts)

Question 13

What is Temperature and Dew point measured in? (1)

Answer 13

Degrees Celsius (°C)

Question 14

What is air pressure on altimeters measured in? (2)

Answer 14

Hectopascals (hPa)

Inches of Mercury (In.Hg)