Capacity Metrics

Describe SEATS.

the total number of seats carried over a single leg

SEATS is the capacity equivalent to…

passengers carried

What is the seat capacity of a return journey?

two seats carried; two.

Seats carried represents…

all revenue earning seats

…this excludes…

cabin crew seats and seats in the cockpit.

Available Seat Kilometres

ASK

Define ASK. How is it calculated? What is it dependent on?

ASK is the product of number of seats carried over a single leg and the passenger average sector length to be flown.

What are three ways that ASK can increase?

a. flying the same distance, but having a larger plane, hence increasing the number of seats.

b. flying with the same aircraft; the number of seats stay constant, but flying a longer distance, hence, PASL increases.

c. airline increases the number of flights, hence, seats and PASL increases.

AFTK

Available Freight Tonne Kilometres

How is AFTK calculated?

the product of maximum amount of freight that is available for the aircraft to carry and the average distance that is to be flown.

Available Passenger Tonne Kilometres

APTK

How is APTK calculated?

the product of the average passenger weight and the available seat kilometre.

! APW and APTK do not use the same metrics. APTK uses Tonnes and so the product should be converted to Tonnes.

APTK is simply the…

seat capacity of the aircraft

Available Tonne Kilometres

ATK

Describe ATK.

the total available capacity of the airline including both passengers and freight

ATK is the sum of…

APTK and AFTK

The most popular measure of capacity for airlines…

ATK. This is because it accounts for its passengers and freight which are important parts of the business.

The most popular metric for the capacity to carry air freight…

AFTK.

The measure of an aircraft’s capability to carry the weight of its passengers over a specified distance is known as…

APTK

Describe block hours

The measure of the total time it takes for a plane to leave one gate and arrive at another

The total number of block hours for a route can be calculated by:

The product of aircraft movement and average flight time

Describe AVR Time

The average flight time for an aircraft between two points, including any delays or time spent on the ground.

Fleet Units

the number of aircraft that are operated by the airline