Performance Class B Regulations

Question 1

Class B SEP rules

Answer 1

No IMC/Night/Over Oceans
Not flying over cloud with a base below MSA

Question 2

What is the minimum all engine climb gradient for a Class B MEP

Answer 2

Minimum 4% gradient

Question 3

All engine climb gradient is based on

Answer 3

4% gradient
T/O Thrust
T/O config
Gear down (unless raised in 7 seconds)
1.2VS1
1.1VMC

Question 4

Class B MEP - OEI 400ft

Answer 4

0.0% climb gradient
Maxed thrust for T/O
T/O Config
Gear up
Speed @ 50ft

Question 5

Class B MEP - OEI 1500ft

Answer 5

0.75% climb gradient
Max continuous thrust
1.2VS

Question 6

TORA net factor without a Stopway/clear way

Answer 6

TORA = TOD X 1.25

Question 7

TORA net factor with either a clear way or stopway

Answer 7

TOD x 1.0

Question 8

TODA

Answer 8

TOD X 1.15

Question 9

ASDA

Answer 9

TOD x 1.3

Question 10

Class B and Sloped runways

Answer 10

1% = 5%
2% = 10%
Anything above requires authorisation

Question 11

Runway surface - Grass (Dry)

Answer 11

X1.2 (up to 20cm depth)

Question 12

Glass B - Grass (Wet)

Answer 12

x1.3

Question 13

Class B - Pavement Wet

Answer 13

X1.0

Question 14

Obstacle clearance past reference zero

Answer 14

60m + 1/2 wingspans (up to 90m)
0.125 x distance

Question 15

Track changes on obstacle clearance

Answer 15

VMC - 300m (AOB less than 15 degrees)
VMC - 600m (AOB greater than 15 degrees)

IMC - 600m (AOB less than 15 degrees)
IMC - 900m (AOB more than 15 degrees)

Question 16

Gradient of the take off flight path from 50ft to the engine failure height is the average all engine gradient multiplied by a factor of

Answer 16

0.77

Question 17

Assumptions on take off flight path for class B aeroplanes

Answer 17

Begins at 50ft above surface at end of TODR and up to 1500ft
Aircraft is not banked before 50ft above surface
Angle of bank does not exceed 15 degrees after this point
Failure of the critical engine occurs at the cloud base

Question 18

Relationship between VR/VMC/VS1 for multi engine land plane

Answer 18

VR must one be less than the greater of 1.05VMC or 1.1VS1

Question 19

Given VS1 and VMC how do you find climb speed

Answer 19

VS1 X 1.2
VMC X 1.1

Biggest number of the two = climb speed

Question 20

En route planning what is the assumed multi engine piston powered rate of climb

Answer 20

300ft/min (down from 500ft on service ceiling)

Question 21

Percentage added to the gross one engine inoperative descent gradient to achieve net

Answer 21

0.5%

Question 22

Landing regulation factor for Class B aeroplane

Answer 22

1.43

Question 23

Upslope and landing in class B aircraft

Answer 23

Upslope are disregarded

Question 24

Minimum steady climb gradient for a baulked landing

Answer 24

2.5%

Question 25

Obstacle accountability

Answer 25

Area beyond the TODA within which obstacles are considered for the purposes of takeoff climb performance

Question 26

Class B - VR must be

Answer 26

Greater of 1.10xVS1/1.05xVMC

Question 27

MEP Speeds

Answer 27

Vr = 1.05VMC
Vr = 1.1 VS1

V2 = 1.2VS1
V2 = 1.1VMC

VREF = 1.3VSO
VREF = VMC

Question 28

SEP Speeds

Answer 28

VR = to VS1
V2 = 1.2VS1
Vref = 1.30 VS0

Question 29

Balked Landing

Answer 29

2.5%

Question 30

Field length requirements on takeoff factors

Answer 30

No Stopway or clear way - 1.25 TOR
Not exceed TORA
Not exceed 1.3 ASDA
Not exceed 1.15 TODA

Grass - Dry x1.2
Grass Wet x.1.3
Paved x1.0

Question 31

Define VS1G

Answer 31

The stall speed for 1G scenario
The lowest speed for straight and level flight at a load factor of 1G