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MIL-STD-765 Revision A:1967
Superseded
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COMPASS SWINGING, AIRCRAFT, GENERAL REQUIREMENTS FOR
12-08-2014
1 SCOPE
1.1 Purpose
1.2 Classification
2 REFERENCED DOCUMENTS
3 DEFINITIONS (Not applicable)
4 GENERAL REQUIREMENTS
4.1 Method I - Ground swinging
4.1.1 Method I(a) - compass rose procedure
4.1.1.1 Compass swinging base
4.1.1.2 Means for aligning aircraft
4.1.1.3 Methods for aligning aircraft
4.1.2 Method I(b) - sighting compass method
4.1.2.1 Sighting compass
4.1.2.2 Check for local variations in
magnetic field
4.1.2.3 Method of determining magnetic
heading of aircraft
4.1.3 Method I(c) - magnetic method, using transit
4.1.3.1 Practical requirements of precision
ground swinging
4.1.3.2 Transit location
4.1.3.3 Alternate transit location
4.1.3.4 Transit mounting
4.1.3.5 Time interval
4.1.3.6 Compass signal
4.1.4 Method I(d) - transit method
4.1.5 Method I(e) - electrical method, using type
MC-1 magnetic compass calibrator set
4.1.5.1 Practical requirements of
electrical swinging
4.1.5.2 Procedure for electrical compass
swinging
4.1.6 Method I(f) - comparison swinging
4.2 Method II - air swinging
4.2.1 Method II(a) - celestial bearings
4.2.1.1 Astrocompass method
4.2.2 Method II(b) - terrestrial bearings
4.2.2.1 Drift sight
4.2.3 Method II(c) - comparison bearings
4.3 Preliminary precautions
4.3.1 Position magnetic equipment in aircraft
4.3.2 Magnetic material carried by personnel
4.3.3 Nonmagnetic screwdriver
4.3.4 Other magnetic and nonmagnetic parts or
equipment
4.3.5 Removal of magnetic objects
4.3.6 Check for serviceability
4.4 Swinging of production aircraft
4.4.1 Difference of deviation between air swing
and ground swing
4.4.2 Difference of deviation due to altitude
4.4.3 Difference of deviation due to equipment
operation
4.5 Swinging of compasses having magnetic compensators
4.5.1 Ground swings
4.5.1.1 Compass rose method
4.5.1.2 Sighting compass method
4.5.2 Air swings
4.5.2.1 Setting to null effect
5 DETAIL REQUIREMENTS (Not applicable)
6 EXAMPLES OF CALCULATING COEFFICIENTS
6.1 Coefficients having magnetic compensators
6.1.1 Compass role metnod
6.1.1.1 Deviations with compensator set to
null effect
6.1.2 Sighting compass method
6.1.2.1 Deviations with compensator set
to null effect
7 PROCEDURE FOR FILLING OUT STANDARD AN5823 COMPASS
CORRECTION CARD
7.1 Explanation of procedure
7.2 Procedure
7.2.1 Recording data
7.2.2 Computations
7.2.3 Compensation
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