Radial and inbound course
A fictional VOR interpretation exercise states that an aircraft lies exactly east of the station on its 090 radial. The reference is magnetic, there is no wind and the question asks for the straight inbound course to the station. The instrument is assumed serviceable and the geometry is explicitly ideal; no published arrival or obstacle-clearance procedure is supplied. One learner chooses 090 because it is the radial number, while another correctly distinguishes the bearing from the station from the inbound direction. The task asks for the reciprocal and an explanation of why heading and position are different concepts. It does not authorize intercepting an airway, descending or ignoring a controller’s instruction. A real operation would require the actual chart, navigation status and applicable clearance in addition to elementary bearing geometry.
1. What is the ideal no-wind inbound course?
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The reciprocal of 090 is 270 degrees. From the stated position east of the station, that direction points toward it.
2. Does the 090 radial alone determine the aircraft’s present heading?
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No. A radial describes position from the station. The aircraft could point in several directions at that location unless heading or tracking conditions are also given.