Performance Class B Regulations Flashcards
Class B SEP rules
No IMC/Night/Over Oceans
Not flying over cloud with a base below MSA
What is the minimum all engine climb gradient for a Class B MEP
Minimum 4% gradient
All engine climb gradient is based on
4% gradient
T/O Thrust
T/O config
Gear down (unless raised in 7 seconds)
1.2VS1
1.1VMC
Class B MEP - OEI 400ft
0.0% climb gradient
Maxed thrust for T/O
T/O Config
Gear up
Speed @ 50ft
Class B MEP - OEI 1500ft
0.75% climb gradient
Max continuous thrust
1.2VS
TORA net factor without a Stopway/clear way
TORA = TOD X 1.25
TORA net factor with either a clear way or stopway
TOD x 1.0
TODA
TOD X 1.15
ASDA
TOD x 1.3
Class B and Sloped runways
1% = 5%
2% = 10%
Anything above requires authorisation
Runway surface - Grass (Dry)
X1.2 (up to 20cm depth)
Glass B - Grass (Wet)
x1.3
Class B - Pavement Wet
X1.0
Obstacle clearance past reference zero
60m + 1/2 wingspans (up to 90m)
0.125 x distance
Track changes on obstacle clearance
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)
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
0.77
Assumptions on take off flight path for class B aeroplanes
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
Relationship between VR/VMC/VS1 for multi engine land plane
VR must one be less than the greater of 1.05VMC or 1.1VS1
Given VS1 and VMC how do you find climb speed
VS1 X 1.2
VMC X 1.1
Biggest number of the two = climb speed
En route planning what is the assumed multi engine piston powered rate of climb
300ft/min (down from 500ft on service ceiling)
Percentage added to the gross one engine inoperative descent gradient to achieve net
0.5%
Landing regulation factor for Class B aeroplane
1.43
Upslope and landing in class B aircraft
Upslope are disregarded
Minimum steady climb gradient for a baulked landing
2.5%
Obstacle accountability
Area beyond the TODA within which obstacles are considered for the purposes of takeoff climb performance
Class B - VR must be
Greater of 1.10xVS1/1.05xVMC
MEP Speeds
Vr = 1.05VMC
Vr = 1.1 VS1
V2 = 1.2VS1
V2 = 1.1VMC
VREF = 1.3VSO
VREF = VMC
SEP Speeds
VR = to VS1
V2 = 1.2VS1
Vref = 1.30 VS0
Balked Landing
2.5%
Field length requirements on takeoff factors
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
Define VS1G
The stall speed for 1G scenario
The lowest speed for straight and level flight at a load factor of 1G
