Compass calibration typically involves two steps. First, compass compensators
are adjusted to minimize the influence of aircraft-induced fields that generate errors
; and second, a correction card is prepared to indicate remaining error.
How do you calibrate a magnetic compass?
Keep the compass in place and then
rotate
the map until the compass needle is pointing north in sequence with the magnetic north line. The compass and map will now be calibrated and aligned with a true north direction.
What fluid is used in an aircraft magnetic compass?
Some compasses are field-refillable, but save the Jack Daniel’s for your own consumption. Alcohol (hence the whiskey compass designation) was used at one time, but now kerosene or aliphatic naphtha is used. The correct fluid is
MIL-C-5020A
.
Does a compass need to be calibrated?
Overview. Everyone understands that a marine
compass needs to be calibrated
.
Where is a compass calibration card found?
ANSWER: The compass calibration requirements for small aircraft (less than 12,500 lbs maximum take-off weight) can be found in
FAR’s 23.1327 and 23.1547
. The compass calibration requirements for large aircraft (more than 12,500 lbs maximum take-off weight) can be found in FAR’s 25.1327 and 25.1547.
What does calibrate compass mean?
Compass calibration works
by detecting the magnetic field intensity of earth
. But sometimes due to strong interference from other electronic devices like transformers, compass sensor may get wrong idea about the magnetic poles of earth and can point in wrong direction.
What fluid goes in a compass?
Until 2001, all Ritchie compasses (see exception) were filled with Odorless Mineral Spirits (100% Paraffin based). Ritchie now uses a fluid called
Isopar L
that has similar properties but some added benefits over Odorless Mineral Spirits.
Where is the magnetic compass most effective?
- About midway between the magnetic poles.
- In the region of the magnetic North Pole.
- On the geographic equator.
Why do pilots use a compass?
The magnetic compass is the most primal and basic instruments used by the
pilot to determine or verify aircraft heading
.
The instrument operations on the principles of magnetism
. Construction of the magnetic compass is relatively universal.
What is a master compass?
[′mas·tər ′käm·pəs] (navigation)
That part of a remote-indicating compass system which determines direction for transmission to various repeaters
.
Is a compass required for VFR flight?
Under VFR operation, part 91, § 91.205, requires
a magnetic direction indicator
(that is normally intended to be a compass) for heading information.
When must a compass swing be performed?
Per the FAA (AC 43.13-1B CHG 1) page 620, paragraph 12-37. A compass swing must be performed on the following occasions:
When the accuracy of the compass is suspected
. After any cockpit modification or major replacement involving ferrous metal.
What is compass no response?
If Your Ford Edge compass displays no response, it just means
that Your car’s compass isn’t working correctly
. The compass is either our of batteries (located in the rearview mirror), the rearview mirror wasn’t installed correctly, or the compass needs re-calibration.
