Exam Preparation

Question 1

Formula : available seats (AS)

Answer 1

AS = SUM (aircraft . available seats . flights)

Question 2

Formula : available seats kilomètres (ASK)

Answer 2

ASK = SUM (aircraft . available seats . flights . distance)

Question 3

Which quantites are used to calculate the supply ?

Answer 3

The passenger seats :
AS & ASK

Question 4

Which quantites are used to calculate the demand ?

Answer 4

The sold seats :
PAX, RPK & LF

Question 5

Formula : number of passengers (PAX)

Answer 5

PAX = SUM (aircraft . passengers . flights)

Question 6

Formula : Revenue passenger kilometers (RPK)

Answer 6

RPK = SUM (aircraft . passengers . flights . distance)

Question 7

Formula : passenger load factor (LF)

Answer 7

LF = RPK / ASK = seats sold / seats available

Question 8

What measures the “utilization” (UH) quantity ?
What’s its formula ?

Answer 8

The utilization (UH) measures the degree of aircraft usage.
UH = N flt,fleet . (BH+MH+T turn) / (N aircraft . 365 days)

Question 9

To what correspond the turn time (T turn) ?

Answer 9

Slack turn time
Essential turn time

Question 10

To what correspond the block hours (BH) ?

Answer 10

Taxi time
Flight time

Question 11

To what correspond the not available time ?

Answer 11

Mostly maintenance hours (MH) and it’s counted as utilized time as well.

Question 12

What are the 5 parameters which influence the fleet size ?

Answer 12

-Flight speed (flight time) up => decrease
-Flight distance up => increase
-Reduction of maintenance and turn around hours => decrease
-Passenger LF up => decrease
-Seating capacity up => decrease