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UNK

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Article Information
Category: ICAO ADREP ICAO ADREP
Content source: ICAO ICAO
Content control: EUROCONTROL EUROCONTROL

Definition

UNK: Unknown or undetermined - Insufficient information exists to categorize the occurrence.

Usage Notes

  • Includes cases where the aircraft is missing.
  • Includes those occurrences where there is not enough information at hand to classify the occurrence or where additional information is expected in due course to better classify the occurrence.