Definition
A test performed on a component, system, or design to confirm that it meets the specified requirements and performs correctly under the conditions for which it was intended. In aviation manufacturing and maintenance, validation tests are used to verify that a part, repair, modification, or process produces the expected result before it is approved for service.
Plain English
A test that proves something works the way it is supposed to work. It checks the finished item against the requirements it was designed to meet.
Context Anchor
Seen in maintenance, inspection, certification, equipment installation, and procedure approval contexts.
Derivation
From the Latin validus, meaning 'strong' or 'effective.' To validate something is to confirm it is sound and trustworthy. A validation test, then, is a check that confirms the item is fit for its intended job.
Why Pilots Care
Validation testing is part of why approved parts and repairs can be trusted in flight. When a component carries an airworthy approval, it has passed validation testing that confirms it performs as required.
Intuition Check
A validation test is not just someone saying something is acceptable. It is a specific check used to show that it works for its intended purpose.
Example Sentence 1
After the avionics shop installed the new transponder, they ran a validation test to confirm it transmitted the correct altitude and code.
Example Sentence 2
Following the avionics upgrade, the shop completed the validation test to verify all functions operated within limits.