"Air density is perhaps the single most important factor affecting airplane performance. Do you agree with this statement? Why or why not?"
This is a great ICAO test question as it allows a candidate to talk about principles of aerodynamics in their own words.
ICAO TEST MODEL ANSWER
We are not going to give you a model answer, but we will help you construct a good answer.
When planning your answer consider these factors:
- lift generated by the wings
- efficiency of the propeller
- power output of the engine
- dry air
Also consider the effects of density altitude:
- attain the same lift
- avoid stalling
- reduced power production
- lower service ceiling
Essential Aviation English vocabulary
lift, airfoil, propeller, humid, reduced, decreased, true, obstacles, altitude
A candidate will also be able to use different forms of a word, eg efficient, efficiency, efficiently so make sure you know your parts of speech.
For more tips on answering ICAO test questions visit http://aviationenglish.com/learning-zone/icao-english-test-questions/
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