A translation in the English language shall be attached to the original and each copy of any form or document written or printed in a foreign language.
ACE rules page: Part 122 in plain English
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19 CFR · PART 122
§ 122.4 English language required.
Official text · Current as of Oct 19, 2026 · from eCFR
Not legal advice. This is the official text as published in the eCFR, which is updated daily but is not the legal edition. For legal purposes, use the annual Code of Federal Regulations or ask an aviation attorney.