Definitions

Question 1

Landing distance

Answer 1

The distance from a point 50 ft above the runway surface to the point at which the airplane would come to a Full Stop on the runway

Question 2

Reference zero

Answer 2

The point in the takeoff flight path at which the airplane is 35 ft above the takeoff surface and at the end of the takeoff distance required.

Question 3

Takeoff field length

Answer 3

The takeoff field length given for each combination of gross weight, ambient temperature, altitude, wind and Runway gradients is the greatest of the following:

a. 115% of the two engine horizontal takeoff distance from start to a height of 35 ft above the runway surface

b. Accelerate stop distance

c. The engine out accelerate go distance

Question 4

Accelerate stop distance

Answer 4

The distance required to accelerate to V1 and abort the takeoff and come to a complete stop with maximum braking applied at V1

Question 5

Engine cycle

Answer 5

Full cycle is defined as engine start, take off power setting, followed by engine shutdown, regardless of duration. Also, an in-flight start.

A partial cycle is defined as:
A touch and go landing is recorded as a 0.5 cycle.
A full stop Landing without engine shutdown shall be recorded as 0.5 cycle.
Ground running idle to Max continuous thrust shall be recorded as 0.5 cycle.

Question 6

Engine out accelerate go distance

Answer 6

The horizontal distance from brake release to the point at which the airplane attains a height of 35 ft above the runway surface on a takeoff during which an engine is recognized to have failed at V1 and the takeoff is continued.

Question 7

ISA

Answer 7

International standard atmosphere: a static atmospheric model of how the pressure, temperature, density, and viscosity of the Earth’s atmosphere change over a wide range of altitudes and elevations.

Question 8

V1

Answer 8

Take off decision speed. The distance to continue the takeoff to 35 ft will not exceed the scheduled takeoff field length if recognition occurred at V1 (accelerate-go).
The distance to bring the airplane to a full stop (accelerate stop) will not exceed the scheduled takeoff field length provided the brakes are applied at V1.

Question 9

V2

Answer 9

Take off safety speed. This climb speed is the actual speed at 35 ft above the runway surface as demonstrated in Flight during takeoff with one engine inoperative.

Question 10

V35

Answer 10

This climb speed is the actual speed at 35 ft above the runway surface as demonstrated in Flight during takeoff with both engines operating.