I have been in the aviation industry specialising in Logistics all my life. There used to be a standard, the ATA 200, for how to abbreviate the unit of measures, such a EA for each, KG for kilograms, HU for hundred, and so on. I understand that the ATA 200 is now dead and has been replaced by ATA Spec 2000 but I can not find these abbreviations in the Spec 2000.

I suppose that these abbreviations are still valid but where can I find them?

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    $\begingroup$ Hello Erik, welcome to Aviation.SE! $\endgroup$
    – DeltaLima
    Commented Jul 20, 2016 at 8:33

1 Answer 1


This is defined in ICAO Annex 5 - Units of Measurement to be Used in Air and Ground Operations


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