BRISTELL BRMAERO Bristell B23, Руководство по обслуживанию

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Airplane Maintenance Manual Bristell
B23
Chapter 34
Chapter 34 Page 6 Issue: 30-Sep-2020
34-20 Attitude & Direction
34-20-11 Electronic Magnetometers
Two electronic magnetometers are installed to the aircraft. One on
each wing side. The RHS magnetometer is the Garmin GMU22 and the
LHS is L3 MAG-500. Both do not require compensation. The access to
the magnetometers is provided by hatches close to the wing tips on
the lower side of the wing.
NOTICE Damage to electronic parts possible!
▶ Do not use magnetic tools to open the access hatch.
34-20-12 Magnetic Compass (if installed)
The magnetic compass is designed to determine magnetic course of
the airplane. The magnetic compass is positioned on the upper edge
of the instrument panel and consists of the vessel filed with non-
freezing liquid with the little window in the front wall. The compass
rose is positioned on the rotary and swinging pivot inside the
compass.
Compensation
Rules for doing compensation of the magnetic compass
▶ Compass compensation must be performed on the
approved compass bases, which are at least 100 m (300
ft) from steel structures, electric leading or other over
ground or underground steel equipment or objects.
▶ If the compass north is westward from magnetic north,
the deviation is westward, i.e. negative. If the compass
north is eastward from magnetic north, the deviation is
eastward, i.e. positive.
Compensation Procedure
▶ Turn the airplane to "N" heading, eliminate the deviation
by "N-S" screw.