Which type of error does the acronym DV MONA refer to?

The acronym DV MONA is associated with a specific type of navigational error known as "Deviation." In aviation, deviation refers to the error introduced in a compass reading due to local magnetic fields within the aircraft, which can lead to inaccurate heading indications. Understanding deviation is critical for pilots, as it can affect navigation and the overall safety of flight operations.

The term "Variation," while related to magnetic navigation, refers to the difference between magnetic and true north and is not specifically identified by the DV MONA acronym. Similarly, "Magnetic dip" refers to the angle at which the Earth's magnetic field lines enter the Earth, which influences magnetic compass behavior but also does not fit the DV MONA acronym. "Oscillation" relates to the undesired rocking motion of the aircraft in flight but is not one of the errors addressed by DV MONA. Thus, focusing on deviation allows pilots to make necessary corrections to ensure accurate navigation while flying.