Class B Factors Flashcards
With one engine inop at 1500 the MEP has a climb requirement of?
Must be greater than or equal to 0.75%
What do you do if the runway is contaminated?
Takeoff is inadvisable - delay takeoff.
Correction for upslope up to 2% (takeoff)?
5% for every 1% upslope
Does a landing always start at 50ft?
Not always - the authority can approve down to 35ft but no less.
What’s the correction for 2.2% upslope on takeoff?
Upslope/downslope greater than 2% requires authority approval.
How much of a tailwind can you use when calculating ground gradients for planning?
150% of reported TW
Max domain width VMC for >15 deg track change?
600m
What’s the factor for downslope on landing?
5% for every 1% downslope
If there’s no stopway or clearway, for takeoff, TORA must be greater than or equal to?
TOD * 1.25 ≤ TORA
How much headwind can you use when calculating ground gradients for planning?
50% of reported HW
With an engine out below 1500ft, the MEP has a climb requirement of?
Positive (No Engine Fail Prior to 300ft)
What’s the minimum speed requirements for the MEP during the climb?
Must be greater than or equal to 1.2 VS1 and 1.1 VMC
If there’s a stopway or clearway, you must check which is most limiting out of: TORA, TODA, ASDA. How do you do this?
TOD ≤ TORA
TOD * 1.15 ≤ TODA
TOD * 1.3 ≤ ASDA
Then choose the most restrictive.
If en-route in the MEP with one engine inop planned descent gradients must be?
Increased by 0.5%
A Class B aircraft must clear obstacles by i)….ft vertically or miss them ii)……
i) 50ft
ii) Horizontally
V2 is the faster of…
1.1 VMC or 1.2VS1
Max domain width IMC for >15deg track change?
900m
What’s the max angle of bank that can be
used for obstacle avoidance?
15 degrees max Angle of Bank
If en-route in the MEP with one engine inop planned climb gradients….
Must be reduced by 0.5%
What is the surface correction for a wet surface (landing)?
1.15
Max domain width in IMC for ≤15deg track change?
600m
With one engine inop, the MEP’s climb speed must be greater than or equal to?
1.2 VS1
Surface correction for wet grass (takeoff)?
1.3
In the NTOFP the one engine out gradient is factored by?
It’s not factored - if the engine fails we can use the gross performance values.
During the en-route phase the MEP must be able to…
Maintain above the MSA to a point 1000ft above the aerodrome
What is the minimum climb requirement for the MEP after takeoff (during the climb phase)?
After takeoff must be greater than or equal to 4%
Why is it important to be at VREF at the barrier height when landing?
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)
VR is the faster of…
1.05 VMC or 1.1 VS1
What is the surface correction for dry grass (landing)?
1.15
During landing the aircraft must land (from 50ft to full stop) within…
70% of the available landing distance (LDA)
During the en-route phase the SEP must be able to…. (assuming above 1000ft)?
Glide to a suitable, safe, forced landing area.
When using the CAP how much of a headwind can you use?
All of it when using the CAP as it’s factored by the CAP graph.
In the NTOFP the twin engine gross performance is factored by?
0.77 to get the net performance
What’s the factor for upslope on landing?
Nothing - we do not take the benefit of upslope on landing in Class B.
What’s the correction to be applied, at takeoff, for a 1.2% downslope?
Nothing - we do not factor the benefits of a downslope on takeoff in Class B.
What’s the correction to be applied for a 1.5% Upslope on takeoff?
7.5% (5% for every 1% upslope)
Correction for downslope up to 2% (takeoff)?
Nothing - we do not allow for the benefits of downslope for a Class B at takeoff
Clearway cannot exceed?
50% of the TORA
OR…
TODA ≤ TORA * 1.5
What is the surface correction for wet grass (landing)?
1.32 (1.15*1.15). Do NOT add the factors must be multiplied together.
For the SEP and MEP the max planned altitude is when the rate of climb reduces to?
300fpm
During climb in the MEP we account for engine failure at?
No engine failure prior to 300ft
In the NTOFP we assume the engine to fail when?
The most critical point - at the cloud base or when visual reference expected to be lost (assumes not below 300ft).
Departure Sector Width = …?
Departure Sector Width = 60m + 0.5Wingspan + (0.125D)
Until specified Domain Width
Surface correction for wet paved (takeoff)?
1.0
Surface correction for dry grass (takeoff)?
1.2
What wind corrections can we use in the NTOFP when calculating obstacle clearance?
150% TW and 50% HW
V2 can also be called?
VTOSS (Take Off Safety Speed)
What’s the max domain width in VMC conditions for ≤15deg of track change?
300m
What height must you be at before carrying out any turns for obstacle avoidance?
Must be above 50ft
