Class B Factors

Question 1

With one engine inop at 1500 the MEP has a climb requirement of?

Answer 1

Must be greater than or equal to 0.75%

Question 2

What do you do if the runway is contaminated?

Answer 2

Takeoff is inadvisable - delay takeoff.

Question 3

Correction for upslope up to 2% (takeoff)?

Answer 3

5% for every 1% upslope

Question 4

Does a landing always start at 50ft?

Answer 4

Not always - the authority can approve down to 35ft but no less.

Question 5

What’s the correction for 2.2% upslope on takeoff?

Answer 5

Upslope/downslope greater than 2% requires authority approval.

Question 6

How much of a tailwind can you use when calculating ground gradients for planning?

Answer 6

150% of reported TW

Question 7

Max domain width VMC for >15 deg track change?

Answer 7

600m

Question 8

What’s the factor for downslope on landing?

Answer 8

5% for every 1% downslope

Question 9

If there’s no stopway or clearway, for takeoff, TORA must be greater than or equal to?

Answer 9

TOD * 1.25 ≤ TORA

Question 10

How much headwind can you use when calculating ground gradients for planning?

Answer 10

50% of reported HW

Question 11

With an engine out below 1500ft, the MEP has a climb requirement of?

Answer 11

Positive (No Engine Fail Prior to 300ft)

Question 12

What’s the minimum speed requirements for the MEP during the climb?

Answer 12

Must be greater than or equal to 1.2 VS1 and 1.1 VMC

Question 13

If there’s a stopway or clearway, you must check which is most limiting out of: TORA, TODA, ASDA. How do you do this?

Answer 13

TOD ≤ TORA
TOD * 1.15 ≤ TODA
TOD * 1.3 ≤ ASDA

Then choose the most restrictive.

Question 14

If en-route in the MEP with one engine inop planned descent gradients must be?

Answer 14

Increased by 0.5%

Question 15

A Class B aircraft must clear obstacles by i)….ft vertically or miss them ii)……

Answer 15

i) 50ft

ii) Horizontally

Question 16

V2 is the faster of…

Answer 16

1.1 VMC or 1.2VS1

Question 17

Max domain width IMC for >15deg track change?

Answer 17

900m

Question 18

What’s the max angle of bank that can be

used for obstacle avoidance?

Answer 18

15 degrees max Angle of Bank

Question 19

If en-route in the MEP with one engine inop planned climb gradients….

Answer 19

Must be reduced by 0.5%

Question 20

What is the surface correction for a wet surface (landing)?

Answer 20

1.15

Question 21

Max domain width in IMC for ≤15deg track change?

Answer 21

600m

Question 22

With one engine inop, the MEP’s climb speed must be greater than or equal to?

Answer 22

1.2 VS1

Question 23

Surface correction for wet grass (takeoff)?

Answer 23

1.3

Question 24

In the NTOFP the one engine out gradient is factored by?

Answer 24

It’s not factored - if the engine fails we can use the gross performance values.

Question 25

During the en-route phase the MEP must be able to…

Answer 25

Maintain above the MSA to a point 1000ft above the aerodrome

Question 26

What is the minimum climb requirement for the MEP after takeoff (during the climb phase)?

Answer 26

After takeoff must be greater than or equal to 4%

Question 27

Why is it important to be at VREF at the barrier height when landing?

Answer 27

The distance required will increase by the square of the speed. For example, for a 10% increase 21% more distance will be required (1.1*1.1=1.21)

Question 28

VR is the faster of…

Answer 28

1.05 VMC or 1.1 VS1

Question 29

What is the surface correction for dry grass (landing)?

Answer 29

1.15

Question 30

During landing the aircraft must land (from 50ft to full stop) within…

Answer 30

70% of the available landing distance (LDA)

Question 31

During the en-route phase the SEP must be able to…. (assuming above 1000ft)?

Answer 31

Glide to a suitable, safe, forced landing area.

Question 32

When using the CAP how much of a headwind can you use?

Answer 32

All of it when using the CAP as it’s factored by the CAP graph.

Question 33

In the NTOFP the twin engine gross performance is factored by?

Answer 33

0.77 to get the net performance

Question 34

What’s the factor for upslope on landing?

Answer 34

Nothing - we do not take the benefit of upslope on landing in Class B.

Question 35

What’s the correction to be applied, at takeoff, for a 1.2% downslope?

Answer 35

Nothing - we do not factor the benefits of a downslope on takeoff in Class B.

Question 36

What’s the correction to be applied for a 1.5% Upslope on takeoff?

Answer 36

7.5% (5% for every 1% upslope)

Question 37

Correction for downslope up to 2% (takeoff)?

Answer 37

Nothing - we do not allow for the benefits of downslope for a Class B at takeoff

Question 38

Clearway cannot exceed?

Answer 38

50% of the TORA
OR…
TODA ≤ TORA * 1.5

Question 39

What is the surface correction for wet grass (landing)?

Answer 39

1.32 (1.15*1.15). Do NOT add the factors must be multiplied together.

Question 40

For the SEP and MEP the max planned altitude is when the rate of climb reduces to?

Answer 40

300fpm

Question 41

During climb in the MEP we account for engine failure at?

Answer 41

No engine failure prior to 300ft

Question 42

In the NTOFP we assume the engine to fail when?

Answer 42

The most critical point - at the cloud base or when visual reference expected to be lost (assumes not below 300ft).

Question 43

Departure Sector Width = …?

Answer 43

Departure Sector Width = 60m + 0.5Wingspan + (0.125D)

Until specified Domain Width

Question 44

Surface correction for wet paved (takeoff)?

Answer 44

1.0

Question 45

Surface correction for dry grass (takeoff)?

Answer 45

1.2

Question 46

What wind corrections can we use in the NTOFP when calculating obstacle clearance?

Answer 46

150% TW and 50% HW

Question 47

V2 can also be called?

Answer 47

VTOSS (Take Off Safety Speed)

Question 48

What’s the max domain width in VMC conditions for ≤15deg of track change?

Answer 48

300m

Question 49

What height must you be at before carrying out any turns for obstacle avoidance?

Answer 49

Must be above 50ft