Guide to the Flight Review by Jackie Spanitz

Author:Jackie Spanitz
Language: eng
Format: epub
Publisher: Aviation Supplies and Academics, Inc.
Published: 2013-04-25T00:00:00+00:00

V. Airplane Instruments

1. What are the various compass errors? (FAA-H-8083-15)

Oscillation error—Erratic movement of the compass card caused by turbulence or rough control technique.

Deviation error—Due to electrical and magnetic disturbances in the aircraft.

Variation error—Angular difference between true and magnetic north; reference isogonic lines of variation.

Dip errors:

Acceleration error—On east or west headings, while accelerating, the magnetic compass shows a turn to the north, and when decelerating, it shows a turn to the south.

Remember: ANDS

A ccelerate

N orth

D ecelerate

S outh

Northerly turning error—The compass leads in the south half of a turn, and lags in the north half of a turn.

Remember: UNOS

U ndershoot

N orth

O vershoot

S outh

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