FH.II.J.K9
KnowledgeMagnetic compass errors.
From the FAA library
- Chapter 8: Flight Instruments › Compass Systems › Magnetic Compass Induced Errors
Magnetic Compass Induced Errors The magnetic compass is the simplest instrument in the panel, but it is subject to a number of errors that must be considered. Variation The Earth rotates about its geographic axis; maps and charts are drawn ... geographic poles. Directions measured from the geographic poles are called true directions. The magnetic North Pole to which the magnetic compass points is not collocated with the geographic North Pole, but is some 1,300 miles away; directions measured from…
- Chapter 8: Flight Instruments › Magnetic Compass Induced Errors › The Vertical Card Magnetic Compass
errors previously mentioned and results in fluctuation of the compass card in relation to the actual heading direction of the aircraft. When setting the gyroscopic heading indicator to agree with the magnetic ... compass, use the average indication between the swings. The Vertical Card Magnetic Compass The vertical card magnetic compass eliminates some of the errors and confusion encountered with the magnetic compass. The dial of this compass is graduated with letters representing…
- Chapter 8: Flight Instruments › Instrument Check › Attitude Indicator
aircraft. Heading Indicator The heading indicator is fundamentally a mechanical instrument designed to facilitate the use of the magnetic compass. Errors in the magnetic compass are numerous, making straight flight and precision turns to headings difficult to accomplish, particularly…
- Glossary › Chart Supplement U.S. (formerly Airport/Facility
computations based on airspeed, course, heading, wind direction and speed, groundspeed, and elapsed time. Deceleration error. A magnetic compass error that occurs when the aircraft decelerates while flying on an easterly or westerly heading, causing the compass card to rotate…
- Chapter 5: Flight Instruments › Dynamic Pressure Type Instruments › Magnetic Compass Errors
Magnetic Compass Errors The magnetic compass is the simplest instrument in the panel, but it is subject to a number of errors that must be considered. Variation The Earth rotates about its geographic axis; maps and charts are drawn using ... through the geographic poles. Directions measured from the geographic poles are called true directions. The north magnetic pole to which the magnetic compass points is not collocated with the geographic north pole, but is some 1,300 miles away; directions…
- Chapter 5: Flight Instruments › Magnetic Compass Errors › Remote Indicating Compass
case. The synchro rotates the dial of a radio magnetic indicator (RMI) or a horizontal situation indicator (HSI). Remote Indicating Compass Remote indicating compasses were developed to compensate for the errors and limitations of the older type of heading indicators ... drive buttons. The slaving meter indicates the difference between the displayed heading and the magnetic heading. A right deflection indicates a clockwise error of the compass card; a left deflection indicates a counterclockwise error. Whenever the aircraft…