Deviation

Definitions

• A magnetic compass error caused by local magnetic fields within the aircraft. Deviation error is different on each heading.
• A compass error caused by magnetic disturbances from the electrical and metal components in the aircraft. The correction for this error is displayed on a compass correction card placed near the magnetic compass of the aircraft.
• A compass error caused by magnetic disturbances from the electrical and metal components in the aircraft. The correction for this error is displayed on a compass correction card place near the magnetic compass of the aircraft.

References

• Helicopter Flying Handbook, Federal Aviation Administration, 2019
• Instrument Flying Handbook, Federal Aviation Administration, 2014
• Pilot's Handbook of Aeronautical Knowledge, Federal Aviation Administration, 2023
• Rotorcraft Flying Handbook, Federal Aviation Administration, 2000