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Revision Detect

This structural rule validates how the application resolves the MISB ST 0601 revision for each decodable packet.

What This Test Does​

The rule:

  • reads Tag 65, UAS Datalink LS Version Number
  • decodes the version value to the corresponding MISB ST 0601 revision
  • reports missing, malformed, or unknown Tag 65 values

✅ Pass Criteria​

The test passes when every decodable MISB ST 0601 packet carries a Tag 65 value that resolves to a known revision.

❌ Fail Criteria​

The test fails when Tag 65 is missing, cannot be decoded as a version number, or carries a revision value the validator does not recognize.

Notes​

This rule is narrower than Unknown Tag for Revision. Revision Detect focuses only on whether the revision can be resolved. Unknown-tag handling is covered separately once the rule has a usable revision context.