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EN ATPL Radio Navigation Questions in English
Practise Radio Navigation
Using the theoretical radio-horizon approximation D(NM) = 1.23 × (√h₁ + √h₂), with heights in feet above MSL, what is the range for an aircraft at FL80 in ISA (8,000 ft MSL) and a VDF antenna at 325 ft MSL?
What airborne equipment, if any, is required to be fitted in order that a VDF let-down may be flown?
If a failed RMI rose is stuck on 090° and the ADF pointer indicates 225°, the relative bearing to the station will be:
An NDB is on a relative bearing of 316° from an aircraft. Given: Compass heading 270°. At aircraft deviation 2°W, Variation 30°E. At station Variation 28°E. Calculate the true bearing of the NDB from the aircraft
In the conventional NDB inbound-track establishment criterion, also reflected in EASA approach training, the aircraft should be within which angle of the required bearing before further descent after the inbound turn?
Two NDBs are 20 NM and 50 NM inland. In a simplified comparison, their respective ranges from an aircraft over water are 50 NM and 80 NM. If both received bearings have the same small non-zero angular error, the linear displacement of the plotted position line at the aircraft is:
You are on a magnetic heading of 055° and your ADF indicates a relative bearing of 325°. The QDM is:
An OBS is set to 048 with a TO flag showing. The VOR deviation bar is showing almost full right deflection. Approximately what radial are you on?
According to the ICAO Annex 10, Volume I definition, what is the usual average radius of rated coverage of an LF/MF locator?
On which displays can the pilot read the magnetic bearing from the aircraft to the NDB directly, without calculation?
