Which defect does not materially reduce the use of the unit or part?

Which defect does not materially reduce the use of the unit or part?

• A. Major Defect
• B. Daily Inspection
• C. Conditional Inspection
• D. Minor Defect

Answer: (D)

Defects are judged by their impact on airworthiness. A defect that does not materially reduce the use of the unit or part is a minor defect. This means the item can still be operated, perhaps with some limitations or pending repair, without significantly compromising safety or function. A major defect, by contrast, would significantly impair use and typically requires grounding or immediate corrective action. The other two options are not defects at all—they describe inspection actions (daily or conditional inspections) rather than faults in a component. So, the defect that does not materially reduce use is a minor defect.

Defects are judged by their impact on airworthiness. A defect that does not materially reduce the use of the unit or part is a minor defect. This means the item can still be operated, perhaps with some limitations or pending repair, without significantly compromising safety or function. A major defect, by contrast, would significantly impair use and typically requires grounding or immediate corrective action. The other two options are not defects at all—they describe inspection actions (daily or conditional inspections) rather than faults in a component. So, the defect that does not materially reduce use is a minor defect.