Instrument Rating IR(A) Practice Questions - CAASL Instrument Rating (Aeroplane) Written Examination Exam

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To maintain a standard 3-degree glide path during an instrument approach, which of the following is the correct formula to approximate the required rate of descent (ROD) in feet per minute?

Multiply the groundspeed (in knots) by 5 Multiply the true airspeed (in knots) by 5 Multiply the groundspeed (in knots) by 10 and divide by 3 Multiply the indicated airspeed (in knots) by 3

Correct Answer:

Multiply the groundspeed (in knots) by 5

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