1. Significant onjuiste, onvoldoende of misleidende gegevens van bronnen op de grond, bv. luchtverkeersleiding (ATC), automatische terminalinformatiedienst (ATIS), meteorologische diensten, navigatiedatabases, kaarten, grafieken, handleidingen, enz.
1. Provision of significantly incorrect, inadequate or misleading information from any ground sources, e.g. Air Traffic Control (ATC), Automatic Terminal Information Service (ATIS), Meteorological Services, navigation databases, maps, charts, manuals, etc.