Arm
Arm
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17.Jun.2022
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SKYbrary Aviation Safety. (June 17, 2022). Arm.
Retrieved June 4, 2026
from https://skybrary.aero/articles/arm
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Definition
The horizontal distance from the reference datum to the centre of gravity (CG) of an item.
The algebraic sign is plus (+) if measured aft of the datum or to the right side of the center line when considering a lateral calculation. The algebraic sign is minus (-) if measured forward of the datum or the left side of the center line when considering a lateral calculation.
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Further Reading
ICAO Annex 8: Airworthiness of Aircraft.
US FAA Aircraft Weight and Balance
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