Performance Fundamentals

Question 1

Implementing Rules

Answer 1

EU Ops - rules of operation

Question 2

Performance Classes of aeroplane are based on

Answer 2

Type of engine
Maximum mass of aeroplane
Maximum operational passenger config

Question 3

Class A - Performance Cat

Answer 3

Any multi engine turbojet with a MTOW greater than 5700kg and 9+ seats

Criteria set out in CS25

Question 4

Class B Aircraft

Answer 4

Propeller Aircraft - MTOM less than 5700kg and less than 9 seats

Minimum requirements set out in CS23

Question 5

Measured Performance

Answer 5

Average for the aeroplane achieved by experienced test pilots.

Question 6

Gross Performance

Answer 6

The average performance for the fleet flown by line pilots using SOPs

Question 7

Net Performance

Answer 7

Performance used to determine the safety related performance limiting masses using a safety factor

Degraded gross performance
- Climb gradient will be smaller than gross
- Descent Gradient will be greater than gross

Question 8

Stopway

Answer 8

Area at end of runways used for abandoned takeoff
Only emergency’s only

Question 9

Accelerated Stop Distance Available - ASDA

Answer 9

Length of the take off run plus the length of the stopway if provided

TORA + STOPWAY

Question 10

Clear way

Answer 10

End of TORA
- 75m either side of the extended runway centreline
- extends to non frangible object
- no object = 1.5 x TORA

Area of land or water beyond runway that must be under the control of the airport authority

Question 11

Balanced Field

Answer 11

TODA = ASDA

Clear way equals the length of the stopway

Question 12

Pavement Classification Number

Answer 12

Load bearing strength of the pavement - if PCN lower than AC ACN cannot be used

Question 13

Screen height definition

Answer 13

The height at the end of the take off distance required and at the beginning of the landing distance required

Question 14

Flight path angle

Answer 14

Angle between flight path vector and the horizon
Path of the aircraft relative to the horizon

Question 15

Pitch Angle

Answer 15

Longitudinal axis and horizon
AOA + FPA

Question 16

AOA

Answer 16

Flight path to longitudinal axis

Question 17

Reference Zero

Answer 17

Imaginary horizontal plane passing through a point 35ft vertically beneath below the aeroplane at the end of the TODR.

Take off flight path begins

Question 18

Take off distance required

Answer 18

Length of runway plus distance in flight along the ground to allow aircraft to reach 50ft of altitude