VOR

#28. The normal maximum error which might be expected with a VOR bearing obtained within the DOC is:

• Aplus or minus 1°
• Bplus or minus 2°
• Cplus or minus 5°
• Dplus or minus 10°

#1. Assuming the maximum likely error in VOR to be 5.5°, what is the maximum distance apart that beacons can be situated on the centre line of a UK airway in order that an aircraft can guarantee remaining within the airway boundary?

• A54.5 nm
• B109 nm
• C66 nm
• D132 nm

#2. The Designated Operational Coverage quoted for VOR beacons in the COMM section of the Air Pilot:

• AIs only applicable by day.
• BGuarantees a Protection Ratio of at least 3 to 1 by day and night.
• CDefines the airspace within which an aircraft is assured of protection from interference from other VORs on the same channel.
• DIs determined by the type of surface over which the signal will have to travel.