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INRAT Instrument Rating · Question

What does a 'MALFU' NOTAM indicate?

In NOTAM terminology, MALFU specifies a malfunction of an approach lighting system. For example, 'MALFU RUNWAY 24' indicates a malfunction of the approach light

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Question: What does a 'MALFU' NOTAM indicate?

Answer options:

  • A report of current icing conditions at a particular altitude.
  • A malfunction of a communication frequency. ✅ A malfunction of an Approach Lighting System (ALS) for a specific runway.
  • A temporary flight restriction (TFR) due to an aerial fire fighting operation.

Correct answer: A malfunction of an Approach Lighting System (ALS) for a specific runway.

Explanation: In NOTAM terminology, MALFU specifies a malfunction of an approach lighting system. For example, 'MALFU RUNWAY 24' indicates a malfunction of the approach lights for runway 24.

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