INRAT Instrument Rating · Question
A pilot notices the altimeter setting knob turning freely with no change in the altimeter indication. Which instrument is likely malfunctioning?
The altimeter setting knob is directly connected to the mechanism that adjusts the sensitive altimeter for barometric pressure. If it turns freely without chang
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Question: A pilot notices the altimeter setting knob turning freely with no change in the altimeter indication. Which instrument is likely malfunctioning?
Answer options:
- Airspeed indicator
- Vertical speed indicator ✅ Sensitive altimeter
- Attitude indicator
Correct answer: Sensitive altimeter
Explanation: The altimeter setting knob is directly connected to the mechanism that adjusts the sensitive altimeter for barometric pressure. If it turns freely without changing the indication, the altimeter itself is likely faulty.
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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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