Definition
Damage to an aircraft component or structure that is beyond the limits of approved repair. The damaged part cannot be restored to a serviceable condition by any approved repair procedure and must be replaced.
Plain English
Damage so severe that the part cannot be fixed and must be thrown out and replaced with a new one.
Context Anchor
Seen in aircraft maintenance manuals, inspection findings, repair limits, and maintenance logbook decisions.
Why Pilots Care
Prevents continued use of a structurally compromised part that could lead to in-flight failure.
Intuition Check
Nonrepairable does not just mean “hard to fix.” In aviation maintenance, it means there is no approved repair that returns the item to airworthy condition.
Example Sentence 1
The mechanic determined the cracked engine mount was nonrepairable damage and ordered a new mount before signing off the inspection.
Example Sentence 2
Any propeller blade with nonrepairable damage from a bird strike must be replaced before the next flight.