INRAT Instrument Rating · Question
While flying at FL180, your altimeter reading remains constant. If the outside air temperature increases while pressure remains constant, what is the effect on your true altitude?
When flying from cold air into warmer air, if the altimeter setting remains constant, the altimeter will read lower than the true altitude. Therefore, an increa
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Question: While flying at FL180, your altimeter reading remains constant. If the outside air temperature increases while pressure remains constant, what is the effect on your true altitude?
Answer options:
- True altitude decreases. ✅ True altitude increases.
- True altitude remains unchanged.
- True altitude first decreases, then increases.
Correct answer: True altitude increases.
Explanation: When flying from cold air into warmer air, if the altimeter setting remains constant, the altimeter will read lower than the true altitude. Therefore, an increase in outside air temperature results in an increase in true altitude for a constant indicated altitude.
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Question explanations
- When flying an NDB approach, what instrument is primarily used to track the inbound course?
- How does an aneroid barometer in an altimeter respond to a change in atmospheric pressure?
- What is the primary characteristic that differentiates a Localizer Performance (LP) approach from a Localizer
- When interpreting a TAF (Terminal Aerodrome Forecast), what does 'PROB30' indicate?
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