Navigational tolerance for NDB is +/- how many degrees?

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Multiple Choice

Navigational tolerance for NDB is +/- how many degrees?

Explanation:
When using an NDB, the bearing you obtain with an ADF has limited accuracy due to signal propagation and instrument limitations. Because of that, a practical and safe operating margin is plus or minus five degrees. This means you should keep your line of tracking within five degrees of the intended bearing to stay on course; larger deviations can lead to noticeable drift, especially on approaches where precise alignment matters. Smaller margins, like one degree, are unrealistic for NDB readings, given the variability, while much larger margins, such as ten or fifteen degrees, would significantly increase the chance of being off course.

When using an NDB, the bearing you obtain with an ADF has limited accuracy due to signal propagation and instrument limitations. Because of that, a practical and safe operating margin is plus or minus five degrees. This means you should keep your line of tracking within five degrees of the intended bearing to stay on course; larger deviations can lead to noticeable drift, especially on approaches where precise alignment matters. Smaller margins, like one degree, are unrealistic for NDB readings, given the variability, while much larger margins, such as ten or fifteen degrees, would significantly increase the chance of being off course.

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