Instrument Rating Checkride Practice Test

The Minimum Reception Altitude (MRA) is defined as the lowest altitude at which navigational signals from a specific ground station can be reliably received for determining an intersection. This parameter is crucial for pilots who rely on VOR or other navigational aids during flight, particularly when they are attempting to intercept or navigate to a specific airway or fix.

When flying, particularly in mountainous or varied terrain, the MRA ensures that the aircraft is at a sufficient altitude to receive necessary navigation signals correctly. This is important in avoiding service interruptions and maintaining flight safety while enabling proper navigation.

Other options reference altitudes related to specific conditions or terrain but do not accurately define the role or application of the MRA in the context of navigation. For example, making references to altitudes above 14,000’ MSL or mountainous terrain does not specifically address the principle that the MRA is centered around reliable navigational signal reception relative to intersections. Thus, stating that the MRA is the lowest altitude at which an intersection can be determined captures its essential purpose effectively.