Plain English Meaning
The learner did not perform well enough to pass this part of the training. They need more work before moving on.
Full Definition
In aviation training assessment, a grade indicating that the learner's performance did not meet the established standard for the lesson, maneuver, or task. An unsatisfactory grade means the learner has not yet demonstrated the required level of knowledge, skill, or judgment, and additional instruction or practice is needed before progressing.
Context Anchor
Seen in instructor grading, lesson records, stage checks, and practical training discussions when performance is marked as acceptable or not acceptable.