Many thanks!
thanks! Henning
how to estimate the number of take-offs in the heathrow airport each day
Overview of answers
Upvotes
Best answer
Hi Youjie!
You can do either top-down or bottom-up here.
Top-Down
Population of London/Surrounding areas residents...subset of which would be flying in/out
PLUS population of daily visitors (business / tourist)
# passengers per plan
Viola...# planes required per day...cut that in half to get take-offs only
Bottom-up
When you've been to a large airport, how many takeoffs have you see on the board at one time?
How many per hour?
How many peak hours per day?
How many non-peak hours per day and what % of peak would this be?
Is Heathrow probably larger or smaller than this sample airport (multiple by that factor)
And again, voila!
Was this answer helpful?
There are certainly many ways how to estimate this. The most intuitive that comes to my mind is calculating total capacity:
- Heathrow has 2 runways - you might remember the public discussions around the permits for a 3rd one. This tells you (a) the number, and (b) that the 2 runways operate at capacity
- Calculate the max capacity based on 2 runways and one flight every x minutes. You might remember sitting in a plane, waiting for take off and seeing one plane after the other in line for the run way -> so assume one flight every 2 minutes
- This gives you 30 flights per hour and runway in 24 hours, or a total of 1440 flights. You might reduce that number by assuming a slightly longer time between take offs between midnight and 6am or so. Maybe half the density during that time, so reduce the number by 1/8th. This gives you 1260.
Googling wha the actual number is (although of course irrelevant, because it's about the approach, not the result): ~1300. So the estimation was pretty close ;)
Was this answer helpful?
Hey, why not post your structure & approach and coaches can comment.
Was this answer helpful?
haha, I will
Hello!
THERE IS A CASE SOLVED FOR YOU :)
Have a look at this free case I did for the PrepL library,:
You have the answer step by step
Hope you find it useful!
Was this answer helpful?
Related Cases
Company case by Oliver Wyman
Style:
Topics:
Your client, large automotive OEM WyCar, has developed its first fully electric vehicle (EV) and introduced it as a pilot on the Austrian market last year. However, sales have been far below the expected numbers. The management has engaged you to support them in understanding the reasons and advise
... (Open whole case)
109.8k
Times solved
Intermediate
Difficulty
Company case by Bain & Company
Style:
Topics:
You have inherited the “Old Winery” from your grandfather, a winery that has been family-owned for five generations and can be dated back to the 16th century.Half of the eleven hectares are used to grow white grapes, the other half to grow red grapes. They are grown in a conventional way, i.e. they
... (Open whole case)
98.4k
Times solved
Intermediate
Difficulty
Company case by Roland Berger
Style:
Topics:
Onlinestar, an online retailer of furniture and garden products (core business), has grown significantly in recent years as a result of an expansion of its product portfolio. The company mainly imports goods from Chinese manufacturers but also operates its own production of cat lavatories (special b
... (Open whole case)
75.9k
Times solved
Intermediate
Difficulty
Style:
Topics:
Nutripremium is a very well-known premium nutrition food company in Europe (€1 billion revenue last year). It is based in Spain and has an excellent market share not only in its home country but also in Portugal, France, Italy and Germany. Nutripremium has two main lines of products:Vitamin-sup
... (Open whole case)
70.4k
Times solved
Advanced
Difficulty
Style:
Topics:
Beyer, one of the biggest pharmaceutical companies in the world, just invented a very reliable vaccine against Chickenpox, a disease that affects children in the age from 2 to 16 years.Beyer came to you wondering what their potential sales in Europe in the first year would be if they launched this p
... (Open whole case)
60.0k
Times solved
Advanced
Difficulty
Content Creator
MBB | 100% personal interview success rate (8/8) and 95% candidate success rate | Personalized interview prep
820
Meetings
54,511
Q&A Upvotes
163
Awards
99 Reviews
