21 Initial Take Off Climb

Question 1

When does the Initial Take Off Climb begin and end?

Answer 1

Begins at screen height (35ft) and ends at 1500ft

Question 2

What is the purpose of:

• NADP1
• NADP2

(Noise Abatement Departure Procedure)

Answer 2

NADP1:
- Used when the noise sensitive region is directly at the end of the runway

• Aim is to reduce noise as soon as possible

NADP2:
- Used when the noise sensitive region is some distance away from the runway

• Aim is to climb as quickly as possible to reduce noise by the noise sensitive region

Question 3

Describe the NADP1 including:

• Heights/Altitudes
• Speeds
• Flaps
• Gear

Answer 3

• Start at screen height (35ft) at V2
• Climb to 800ft, V2+10, TOGA, retract gear, flaps in T/O
• Climb to 3000ft, reduce thrust, V2+10, reduce climb rate (still +ve), gear up, flaps in T/O
• Climb (+ve), increase thrust, accelerate, retract flaps

Question 4

Describe the NADP2 including:

• Heights/Altitudes
• Speeds
• Flaps
• Gear

Answer 4

• Start at screen height (35ft), V2
• Climb to 800ft, TOGA, V2+10, retract gear, flaps in T/O
• Accelerate to Vzf, climb(+ve), TOGA, gear up, retract flaps
• Climb to 3000ft
• Reduce thrust as and when required

Question 5

Describe the NTOFP (Net Take Off Flight Path) for a Class A AC including:

• Start/end
• Speed
• Gear
• Flap
• Thrust setting
• Max bank angle

Answer 5

Seg 1:

• Start at screen height (35ft) and ends at spd: V2
• Spd: V2min to V2
• Gear retracting
• Flap in specific configuration
• Thrust: TOGA
• Max AoB: 15 degrees (20 with approval)

Seg 2:

• Starts at spd: V2 and ends at min 400ft
• Spd: V2
• Gear up
• Flap in specific configuration
• Thrust: TOGA
• Max AoB: 15 degrees (20 with approval)

Seg 3:

• Starts at min 400ft and ends at spd: Vmd and clean AC config.
• Spd: V2 to Vmd
• Gear up
• Flaps retracting
• Thrust: TOGA
• Max AoB: 25 degrees (30 with approval)

Seg 4:

• Starts spd: Vmd and clean AC config. and ends at 1500ft
• Spd: Vmd
• Gear up
• Flap zero
• Thrust: MCT

Question 6

What are the rules regarding turns in the NTOFP for a class A AC?

Answer 6

• Turns can be commenced at a height >50ft or 1/2 wingspan (which ever is greater)
• AoB must be <= 15 degrees below 400ft (Segment 1 and 2)
• AoB must be <= 25 degrees above 400ft (Segment 3)
• With special approval: <= 20 degrees between 200 and 400ft and <= 30 degrees above 400ft

Question 7

What is the minimum obstinate clearance for a Class A AC in the NTOFP?

Answer 7

• 35 ft when AoB is limited to 15 degrees

- 50 ft when AoB is higher than 15 degrees

Question 8

For a Class A AC, what determines the maximum acceleration height in the 3rd segment of the NTOFP?

Answer 8

Maximum time take-off thrust can be applied (10mins one engine)

Question 9

For a Class A AC, what are the safety factors to be applied to calculate the net gradients during the NTOFP:

• 1 Eng remaining
• 2 Eng remaining
• 3 Eng remaining

Answer 9

• 1 Eng: 0.8%
• 2 Eng: 0.9%
• 3 Eng: 1.0%

Question 10

For a Class A AC, what are the min gross gradients which must be achieved during the the 1st segment of the NTOFP:

• 2 Eng AC
• 3 Eng AC
• 4 Eng AC

Answer 10

• 0.0%
• 0.3%
• 0.5%

Question 11

For a Class A AC, what are the min gross gradients which must be achieved during the the 2nd segment of the NTOFP:

• 2 Eng AC
• 3 Eng AC
• 4 Eng AC

Answer 11

• 2.4%
• 2.7%
• 3.0%

Question 12

For a Class A AC, what are the min gross gradients which must be achieved during the the 3rd segment of the NTOFP:

• 2 Eng AC
• 3 Eng AC
• 4 Eng AC

Answer 12

• 1.2%
• 1.5%
• 1.7%

Question 13

For a Class A AC, what are the min gross gradients which must be achieved during the the 4th segment of the NTOFP:

• 2 Eng AC
• 3 Eng AC
• 4 Eng AC

Answer 13

• 1.2%
• 1.5%
• 1.7%